期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到1,302篇文章
< 1 2 … 66 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Supramolecular self-assembled graphitic carbon nitride catalyst:A comprehensive review on design principle,synthesis strategy,functionalization and application 认领 引用 被引量：2
1
作者 Hao Yang Shaodong Sun +1 位作者 Qing Yang Jie Cui 《Nano Materials Science》 EI CAS CSCD 2026年第2期364-437,共74页
Graphitic carbon nitride(g-CN)stands out as the most promising candidate for solar energy conversion owing to its easy preparation,metal-free nature,flexible molecular structure,moderate bandgap,and excellent thermal/... Graphitic carbon nitride(g-CN)stands out as the most promising candidate for solar energy conversion owing to its easy preparation,metal-free nature,flexible molecular structure,moderate bandgap,and excellent thermal/chemical stability.To enhance the performance of intrinsic g-CN,a supramolecular self-assembly strategy has been proposed to regulate the molecular structure of supramolecular precursors through non-covalent interactions across molecular building blocks,thereby optimizing the electronic structure of g-CN.This review provides a comprehensive overview of the recent progress in supramolecular self-assembly-derived graphitic carbon nitride(SM-CN)from both experimental and theoretical computational research in synthesis strategies,including synthesis methods and influencing factors,providing a theoretical foundation for the design of supramolecular assembly.It also discusses modification strategies,such as internal modification of the conjugated plane,interlayer optimization,and construction of heterointerfaces to improve the electronic structure of SM-CN owing to its unique layered structure.This review further summarizes the applications of SM-CN in environment and energy,including wastewater treatment,sterilization and disinfection/air purification,water splitting,H2O2production,organic synthesis/biomass conversion,CO2reduction,photocatalytic coupling technology.Finally,perspectives and outlooks for the future development of SM-CN aim to inspire further innovation in the design and construction of high-performance SM-CN for broader applications. 展开更多
关键词 Graphitic carbon nitride Photocatalysis Supramolecular self-assembly Functionalization Application
暂未订购 下载PDF
Hierarchical N,S co-doped Fe3O4/C nanotubes constructed by ultrathin nanosheets for superior Li-ion batteries 认领 引用 被引量：2
2
作者 Fucong Lyu Shanshan Zeng +14 位作者 Ligang Sun Feixiang Ma Shaoran Yang Zebiao Li Lu Yao Fengqian Hao Zhe Jia Xufen Xiao Hongkun Li Aiwu Wang Guo Liu Yang Yan Yawen Zhan Yangyang Li Jian Lu 《Nano Materials Science》 EI CAS CSCD 2026年第3期641-650,共10页
In the present work,a facile strategy of synthesizing ultrathin nanosheets constructed N,S co-doped Fe3O4/C nanotubes via annealing the methyl orange-embedded Fe-glycerate nanotubes is reported.The nanosheet,con... In the present work,a facile strategy of synthesizing ultrathin nanosheets constructed N,S co-doped Fe3O4/C nanotubes via annealing the methyl orange-embedded Fe-glycerate nanotubes is reported.The nanosheet,constituting the wall of the nanotube,is formed by small Fe3O4 nanoparticles enchased highly graphitic carbon at a graphitization temperature as low as 450℃.The nanosheets constructed N,S co-doped Fe3O4/C nanotubes exhibited superior electrochemical performance due to the highly accelerated intercalation/deintercalation rate of Li+ ions resulting from the homogeneous N and S dopants,greatly buffered volume expansion resulting from the abundant micro/meso-pores and hieratical nanosheet organized nanotube structure,and the good conductivity resulting from the graphitic carbon coating.Density functional theory(DFT)verified that N,S doping can efficiently promote the adsorption of Li+ ions thus accelerated the intercalation/deintercalation rate of Li+ ions. 展开更多
关键词 N S co-doped Fe3O4/C nanotubes Ultrathin nanosheets Low temperature graphitization Promoting Liþadsorption Li-ion batteries
暂未订购 下载PDF
Self-assembled nanoflower zeolitic imidazolate framework-carbon for superior sodium storage 认领 引用 被引量：1
3
作者 Xiaohua Zhang Kangjie Han +4 位作者 Xinxin Zhao Xiaoyan Yan Kang Zhang Hengxiang Li Baosheng Liu 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2026年第5期1618-1627,I0149-I0151,共10页
Conventional hard carbon anodes,despite their high sodium storage capacity,suffer from two major limitations:sluggish ion diffusion kinetics due to tortuous micropore networks and significant volume expansion arising ... Conventional hard carbon anodes,despite their high sodium storage capacity,suffer from two major limitations:sluggish ion diffusion kinetics due to tortuous micropore networks and significant volume expansion arising from disordered carbon structures.These inherent defects collectively compromise rate capability and cycling stability.Herein,we devise a graphene oxide(GO)-directed templating approach to architect zeolitic imidazolate framework(ZIF)-derived carbon into a hierarchical nanoflower superstructure with radially aligned meso/macroporous nanosheets.This superstructure integrates three synergistic features:three-dimensional interconnected channels and graphitic domains enabling fast ion/electron transport,radially aligned nanosheets maximizing electrode-electrolyte contact while accommodating volume expansion,and nitrogen-doped defect sites providing preferential redox-active centers for sodium storage.The optimized ZIF-9@GO-6 achieves a high specific capacity of 521.8 mAh·g-1at 0.05 A·g-1with an initial Coulombic efficiency of 89.2%,and retains a specific capacity of 298.2 mAh·g-1after 500 cycles.This GO-directed morphological engineering strategy effectively resolves the intrinsic trade-offs between porosity,conductivity,and structural stability in conventional hard carbon anodes,paving the way for scalable,high-performance sodium-ion batteries. 展开更多
关键词 sodium-ion batteries graphitization hard carbon zeolitic imidazolate framework graphene oxide
暂未订购 下载PDF
Robust Floquet-Induced Gap in Irradiated Graphite 认领 引用 被引量：1
4
作者 Fei Wang Xuanxi Cai +6 位作者 Wanying Chen Jinxi Lu Tianshuang Sheng Xiao Tang Jiansong Li Hongyun Zhang Shuyun Zhou 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第5期154-160,共7页
Floquet engineering provides an emerging pathway for tailoring the electronic states of quantum materials through time-periodic drive.A critical step along this direction is achieving light-induced modifications of th... Floquet engineering provides an emerging pathway for tailoring the electronic states of quantum materials through time-periodic drive.A critical step along this direction is achieving light-induced modifications of the dynamical electronic structure,such as avoided-crossing gap at the Floquet Brillouin zone boundary,via efficient coupling of electrons with the coherent light-field.Here,we report robust Floquet-induced gap in bulk graphite that persists despite the presence of interlayer coupling and photo-excitation.Using time-and angle-resolved photoemission spectroscopy with intense mid-infrared pumping,we directly reveal Floquet-induced gaps at resonance points both in the valence and conduction bands,accompanied by coherent Floquet sidebands.The gap and sidebands coexist with photo-excited carriers,yet their distinct timescales allow us to disentangle their origins.Our demonstration of robust Floquet-induced gaps establishes graphite as a platform for coherent manipulation of Dirac fermions and realization of light-engineered quantum phases. 展开更多
关键词 tailoring electronic states floquet engineering Photoexcitation Time periodic drive Graphite Dirac fermions Floquet induced gaps interlayer coupling
暂未订购 下载PDF
“Win-Win”Structural Engineering of Chinese Herb Residues-Derived Porous Graphitic Carbons:Decoupling the Porosity-Graphitization Antagonism for Ultrahigh-Rate Supercapacitors 认领 引用 被引量：1
5
作者 Chuixiong Kong Tingmin Di +3 位作者 Geming Wang Quanrong Deng Yuan Gao Shenggao Wang 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2026年第2期392-404,共13页
The antagonism between porosity and graphitization critically limits carbon supercapacitor performance.Here,we demonstrate a structural engineering strategy that converts Sargentodoxa Cuneata residue(SCR)into hierarch... The antagonism between porosity and graphitization critically limits carbon supercapacitor performance.Here,we demonstrate a structural engineering strategy that converts Sargentodoxa Cuneata residue(SCR)into hierarchically porous graphitic carbons(SCR-HPCs).By precisely regulating biomass precursor porous architecture,this methodology decouples the antagonism between porosity development and graphitization progression in KOH-mediated activation,achieving simultaneous high specific surface area(2465.1 m2 g-1)and graphitization(ID/IG of 0.73).In 6 M KOH electrolyte,the specific capacitance of the optimized SCR-HPC-900 electrode reaches 415.6 F g-1 at 0.5 A g-1,with a capacitance retention of 75.1%even at an ultra-high current density of 200 A g-1.The fabricated symmetric supercapacitor achieves an energy density of 8.5 Wh kg-1 at a power density of 37803 W kg-1,retaining over 100.8%of its capacitance after 100000 cycles.Remarkably,in 1 M TEABF4/PC organic electrolyte,the supercapacitor achieves maximum energy and power densities of 45.6 Wh kg-1 and 41750 W kg-1,respectively.This study presents an effective methodology for decoupling the antagonism between porosity and graphitization in conventional processes,offering a new idea for converting biomass waste into high-performance energy storage materials. 展开更多
关键词 biomass high rate performance KOH activation porous graphitic carbon supercapacitors
暂未订购 下载PDF
Mineral resources of Asia continent:Resource endowment,mining industry pattern,and contributions to the world economy 认领 引用 被引量：1
6
作者 Xi-feng Chen Gang Wang +2 位作者 Yan-xiong Mei Hai-jie Zhao Yan-yun Ma 《China Geology》 CAS CSCD 2026年第1期1-24,共24页
Mineral resources in Asia continent and its mining industry play a significant role in the economic growth and industrialization of both Asia and the world.Asia continent boasts the most comprehensive kinds of mineral... Mineral resources in Asia continent and its mining industry play a significant role in the economic growth and industrialization of both Asia and the world.Asia continent boasts the most comprehensive kinds of minerals,with reserves of at least 38 of over 80 widely used minerals worldwide accounting for more than30%of the global total reserves.Asia continent experienced three main tectonic evolution and mineralization stages:The Precambrian,the Paleozoic,and the Mesozoic to Cenozoic.The abundant mineral resources in this continent can be divided into seven first-order metallogenic belts(metallogenic domains),18 second-order metallogenic belts(metallogenic provinces),61 third-order metallogenic belts(metallogenic zones),and nine main minerogenetic series.Asia continent exhibits the most significant metallogenic specialization among all continents.Specifically,granite belts of Asia continent manifest pronounced metallogenic specialization of tin,rare metals,and porphyry Cu-Au-Mo deposits.Its maficultramafic rock belts and ophiolite belts display notable metallogenic specialization of lateritic nickel deposits and magmatic type chromite deposits,while its Mesozoic to Cenozoic basalt belts show remarkable metallogenic specialization of lateritic bauxite deposits.Consequently,many giant metallogenic belts were formed,including the Southeast Asian tin belt,the Qinghai-Xizang Plateau rare metal metallogenic belt,the Tethyan porphyry Cu-Au-Mo metallogenic belt,the circum-Pacific porphyry Cu-Au-Mo metallogenic belt,the Southeast Asian lateritic bauxite metallogenic belt,the Deccan Plateau lateritic bauxite metallogenic belt in India,the Southeast Asian lateritic nickel metallogenic belt,and the Tethyan magmatic type chromite metallogenic belt—all of which are significant metallogenic belts in Asia continent.Future mineral exploration in Asia should focus primarily on the Precambrian mineralization of ancient cratons,the Paleozoic mineralization of the Central Asian-Mongolian orogenic belt,and the Mesozoic to Cenozoic mineralization of the Tethyan and circum-Pacific mobile belts.Asia's mining industry not only underpins its own economic growth but also propels global economic development and industrialization,contributing significantly to the world economy.Asia boasts the highest production value of minerals,the largest annual production of minerals,and the greatest trade value of mineral products among all the continents,having emerged as the trade center of global mineral products and the center of the mining industry economy.China is identified as one of the few countries that possess the most comprehensive kinds of minerals,and its mining industry has supported and driven the economic development and industrialization of Asia and even the world.Standing as the largest mineral producer worldwide,China ranked first in the production of 28 mineral commodities in the world in 2022.Besides,China exhibits the highest annual production value of minerals and the largest trade value of mineral products among all countries.Therefore,China's demand for global mineral products influences the global supply and demand patterns of minerals and the world economic situation. 展开更多
关键词 Mineral resource endowment Minerogenetic series Metallogenic specialization Carbonate-type REE deposits Weathering-type REE deposits Hard rock-type lithium deposits Laterite nickel deposits Crystalline graphite deposits Magmatic nickel deposits Significant metallogenic belt Mining industry development pattern Mineral exploration and exploitation World economy Contribution Asia continent
暂未订购 下载PDF
Carbon nitride supported copper catalyst activating peroxydisulfate for efficient paracetamol degradation 认领 引用
7
作者 Nan Huang Ya-Lan Xu +3 位作者 Wen-Long Wang Yan-lin Chen Qian-Yuan Wu Hong-Ying Hu 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第7期186-197,共12页
The heterogeneous Fenton-like reaction with peroxydisulfate(PDS)is a highly promising technology for the degradation of pharmaceuticals and personal care products(PPCPs).It does not require a light or heat source,has ... The heterogeneous Fenton-like reaction with peroxydisulfate(PDS)is a highly promising technology for the degradation of pharmaceuticals and personal care products(PPCPs).It does not require a light or heat source,has a broader pH applicability,and does not cause secondary pollution or catalyst loss.In this study,we synthesized a highly dispersed Cu-doped graphitic carbon nitride catalyst(Cu/C3N4).Catalyst characterization results confirmed that the main pore size ranged from 0 to 4 nm,and Cu(Ⅰ)and Cu(Ⅱ)were highly uniformly dispersed onto the graphitic carbon nitride matrix.The Cu/C3N4 catalyst exhibited superior performance in activating PDS for paracetamol degradation under neutral pH conditions,achieving a catalytic efficiency of 7.82 L/(min·g-Cu).No obvious decrease in the paracetamol removal rate was observed over the eight successive cycles,indicating extraordinary reusability of the Cu/C3N4 catalyst.The removal efficiency of paracetamol in secondary effluent and river water was inhibited due to the influence of inorganic ions and organic matter,but approximately 80% paracetamol removal was still achieved in actual waters within 30 min.Radical quenching and electron spin-resonance spectroscopy results indicated that radical pathways(mainly SO4•−)and nonradical pathways(singlet oxygen and mediated electron transfer)were the main degradation mechanisms.The transformational products identified by HPLC-QTOF-MS were mainly p-nitrophenol,hydroquinone,p-benzoquinone,butanediol,and glycerol.This study provides insights into the performance and mechanisms of Cu/C3N4/PDS oxidation for paracetamol degradation,highlighting its potential for PPCPs removal and sustainable water reclamation. 展开更多
关键词 Cu-based catalyst Graphitic carbon nitride Peroxydisulfate Paracetamol Reactive species
暂未订购 下载PDF
Size effect of graphite anode with boosted capacitive solvated-Na+co-intercalation for high-power sodium-ion capacitors 认领 引用
8
作者 Xiaojuan Huang Zerui Yan +2 位作者 Xiaoqing Chang Dafu Tang Qiulong Wei 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第5期732-736,共5页
Solvated-ion co-intercalation mechanism with high-rate capability properties makes graphite anode reconsider as optional anode for sodium-ion batteries and capacitors.The size effect has been widely investigated for v... Solvated-ion co-intercalation mechanism with high-rate capability properties makes graphite anode reconsider as optional anode for sodium-ion batteries and capacitors.The size effect has been widely investigated for various transition metal oxide materials,but such influences on the co-intercalation mechanism remain largely unexplored.In this study,natural graphite anodes with different particle sizes ranging from 25μm to 1.7μm for[Na(diglyme)x]+co-interaction are systematically investigated through detailed kinetics analysis and in-situ X-ray diffraction characterization.Importantly,we find that the reaction pathways of the co-intercalation and co-extraction are quite different.The reduced graphite size results in the loss of phase transitions during the co-extraction process and then the disappearance of the sharp anodic redox peak.The small-sized graphite anodes display boosted capacitor-like responses and provide additional surface adsorption with a slightly increased capacity.Finally,a hybrid sodium-ion capacitor(SIC),using graphite anode and activated carbon cathode,is assembled without complex presodiation treatments.Such optimized hybrid SICs deliver high energy densities of 60 Wh/kg at 240 W/kg and high power density of~16,000 W/kg with 32 Wh/kg,and ultralong 30,000 stable cycles.This work provides fundamental insights into the Na+-solvent co-intercalation mechanism with tunable capacitor-like kinetics,representing a promising direction for high-power sodium-ion storage. 展开更多
关键词 Graphite Co-intercalation Size effect Capacitor-like behaviors Sodium-ion capacitors
暂未订购 下载PDF
Upcycling Spent Graphite into Fluorine-Doped Reduced Graphene Oxide Anodes for High-Performance Lithium-Ion Batteries 认领 引用
9
作者 LI Fei XING Baolin +4 位作者 WANG Zhenshuai HOU Yida YANG Lei ZENG Huihui PAN Qiaoqiao 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2026年第3期623-638,共16页
Fluorine-doped reduced graphene oxide(FRGO)was synthesized from spent graphite(SG)by first producing reduced graphene oxide(RGO)via potassium permanganate-assisted oxidation and thermal reduction,followed by fluorinat... Fluorine-doped reduced graphene oxide(FRGO)was synthesized from spent graphite(SG)by first producing reduced graphene oxide(RGO)via potassium permanganate-assisted oxidation and thermal reduction,followed by fluorination with lithium hexafluorophosphate.The optimized material,FRGO-3,exhibited an expanded interlayer spacing of 0.375 nm,an ultrahigh specific surface area of 1433.86 m2·g-1,and a high fluorine doping content of 3.6%.Fluorine incorporation was predominantly achieved in semi-ionic and covalent C-F configurations.Owing to these structural and chemical characteristics,FRGO-3 demonstrated remarkable lithium storage performance,including a high reversible capacity of 1323 mAh·g-1 at 50 mA·g-1 and a retained capacity of 489 and 318 mAh·g-1 even at a high current density of 1000 and 2000 mA·g-1,along with excellent cycling stability.These results underscore its potential as an advanced anode material for highperformance lithium-ion batteries(LIBs).This work presents an efficient and scalable approach for the regeneration of waste graphite while unlocking its promise for sustainable LIB applications. 展开更多
关键词 spent graphite reduced graphene oxide fluorine-doped lithium-ion batteries
暂未订购 下载PDF
Etching-Expanded Anode:A Method to Improve the Reduction Efficiency of Vacuum Thermal Reduction of Spent Anode to Spent Ternary Cathode 认领 引用
10
作者 Jun Li Yang Tian +3 位作者 Bin Yang Baoqiang Xu Junxian Hu Songli Wang 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2026年第3期178-187,共10页
Vacuum carbon thermal reduction has been widely studied for the recovery of ternary lithium batteries,and there are many choices for the type of carbon to be reduced in this method,such as expensive carbon nanotubes a... Vacuum carbon thermal reduction has been widely studied for the recovery of ternary lithium batteries,and there are many choices for the type of carbon to be reduced in this method,such as expensive carbon nanotubes and inexpensive battery anode carbon.In this paper,the vacuum reduction of ternary lithium batteries cathode materials by carbon nanotubes was investigated,and it was confirmed that carbon nanotubes,as a high-quality carbon with high carbon content and large specific surface area,can achieve very excellent reduction results.Using concentrated sulfuric acid with a concentration of 98%and H₂O₂with a concentration of 60%,swollen anode carbon as the reduced carbon,the direct yields of Li and Mn were above 99%at a vacuum of 10 Pa,a temperature of 1623 K,a pressurized material pressure of 0 MPa,and a roasting time of 90 min,similar to the effect of expensive carbon nanotubes,and the roasting time was lower than that of the unetched anode carbon.This process improves the reduction efficiency and saves energy consumption in vacuum carbothermal reduction of waste ternary lithium batteries cathode materials. 展开更多
关键词 carbon thermal reduction cathode materials expanded graphite reducing carbon vacuum
暂未订购 下载PDF
Enable high-power fluorinated graphite cathode for lithium primary batteries by metallic ionic liquid-derived surface activation engineering 认领 引用
11
作者 Bingxu Chen Lei Yi +3 位作者 Ruixi Xie Rui Gao Jia Yu Siqi Shi 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第6期616-623,共8页
Lithium/fluorinated graphite(Li/CFx)primary batteries with great energy density advantages still struggle to realize large-scale applications,due to the sluggish cathode reaction kinetics accompanied by poor rate c... Lithium/fluorinated graphite(Li/CFx)primary batteries with great energy density advantages still struggle to realize large-scale applications,due to the sluggish cathode reaction kinetics accompanied by poor rate capability and power density.One key challenge arises from the inert electronic structure of CFxpredominated by covalent C–F bond,which results in poor intrinsic electronic conductivity.To address this issue,cathode surface activation engineering is proposed to modify CFxwith hybrid transitional metal oxide/carbon layer,which is derived by one-pot pyrolysis of structurally designable metallic ionic liquids(Bmim[MCln],M=Fe,Al,Cu,Zn,etc.).Generally,the presence of metal oxides induces generation of highly conductive semi-ionic C–F species,cooperating with abundant oxygen vacancies and carbon matrix to synergistically improve electronic/ionic conduction and accelerate CFxconversion kinetics,while the Bmim[FeCl4]-derived system is the optimal solution.As expected,the surface activated CFxcathode achieves nearly 4 times the power density(22,581 W/kg at 14 C)of pristine CFxand higher conversion depth.This metallic ionic liquid-derived surface activation design efficiently regulates the intrinsically inert electronic structure of CFxcathode,and widens its chemical design space of metal oxides as composite components,furthermore,providing a universal solution for electrodes faced with electronic conduction challenges. 展开更多
关键词 Lithium primary battery Fluorinated graphite Semi-ionic bond Ionic liquid Electronic conductivity Power density
暂未订购 下载PDF
Revealing the synergistic effect of materials composition and pollutants structure on catalytic degradation mechanism in heterogeneous iron-based Fenton-like reactions 认领 引用
12
作者 Zhen Liu Xinyi Xu +2 位作者 Jinkai He Fei Xu Qian Li 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第4期363-370,共8页
Elucidating the synergistic influence mechanism of catalysts composition and pollutants structure on the treatment system is a necessary way to further expand the application potential of heterogeneous ironbased Fento... Elucidating the synergistic influence mechanism of catalysts composition and pollutants structure on the treatment system is a necessary way to further expand the application potential of heterogeneous ironbased Fenton-like technology in the field of water treatment from catalytic source and degradation end.In this study,a nitrogen-doped iron-carbon material(Fe-NC-4%)was synthesized to effectively activate peroxymonosulfate(PMS)to remove different organic pollutants,thus further exploring the synergistic effects of material and pollutant structures on degradation performance and mechanism.A combination of characterization analysis,experimental demonstration and density functional theory calculation showed that the more graphitic nitrogen in Fe-NC-4%assisted the Fe active centers to adsorb PMS more easily and further form the Fe-NC-4%-PMS*complex with high activity and stability.And the Fe-NC-4%-PMS*complex could efficiently and selectively degraded electron-donating organics by electron transfer process(ETP).The degradation rate of ofloxacin(OFL)with stronger electron-donating ability could reach 0.405 min-1in the Fe-NC-4%/PMS system.In addition,the Fe-NC-4%/PMS system possessed strong environmental adaptability,safety and practical application potential.This study would provide technical and theoretical guidance for the top-down analysis of specific reaction mechanisms in Fenton-like systems,including catalyst structure design,reactive species generation and selective pollutant degradation. 展开更多
关键词 Fenton-like reaction Electron transfer process Graphitic nitrogen Electron-donating organics Selective degradation
暂未订购 下载PDF
CoPt graphitic nanozyme enabled naked-eye identification and colorimetric/fluorescent dual-mode detection of phenylenediamine isomers 认领 引用
13
作者 Luyao Guan Zhaoxin Wang +2 位作者 Shengkai Li Phouphien Keoingthong Zhuo Chen 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第2期407-414,共8页
Simultaneous identification and quantitative detection of phenylenediamine(PDA)isomers,including o-phenylenediamine(OPD),m-phenylenediamine(MPD),and p-phenylenediamine(PPD),are essential for environmental risk assessm... Simultaneous identification and quantitative detection of phenylenediamine(PDA)isomers,including o-phenylenediamine(OPD),m-phenylenediamine(MPD),and p-phenylenediamine(PPD),are essential for environmental risk assessment and human health protection.However,current visual detection methods can only distinguish individual PDA isomers and failed to identify binary or ternary mixtures.Herein,a highly active and ultrastable peroxidase(POD)-like CoPt graphitic nanozyme was used for naked-eye identification and colorimetric/fluorescent(FL)dual-mode quantitative detection of PDA isomers.The CoPt@G nanozyme effectively catalyzed the oxidation of OPD,MPD,PPD,OPD+PPD,OPD+MPD,MPD+PPD and OPD+MPD+PPD into yellow,colorless,lilac,yellow,yellow,wine red and reddish-brown products,respectively,in the presence of H2O2.Thus,the MPD,PPD,MPD+PPD and OPD+MPD+PPD were easily identified based on the distinct color of their oxidation products,and the OPD,OPD+PPD,OPD+MPD could be further identified by the additional addition of MPD or PPD.Subsequently,CoPt@G/H2O2-,a 3,3′,5,5′-tetramethylbenzidine(TMB)/CoPt@G/H2O2-,and MPD/CoPt@G/H2O2-enabled colorimetric/FL dual-mode platforms for the quantitative detection of OPD,MPD and PPD were proposed.The experimental results illustrated that the constructed sensing platforms exhibit satisfactory sensitivity,comparable to that reported in previous studies.Finally,the evaluation of PDAs in water samples was realized,yielding satisfactory recoveries.This work expanded the application prospects of nanozymes in assessing environmental risks and protection of human security. 展开更多
关键词 Copt graphitic nanozyme Phenylenediamine isomers Naked-eye identification Colorimetric detection Fluorescent detection
暂未订购 下载PDF
A larger work function in hybrid hard carbon-graphite negative electrodes produces a thermally stable solid electrolyte interphase for lithium-ion batteries at 65℃ floating charge conditions 认领 引用
14
作者 Han Yalu Wang Hao +8 位作者 Xie Lijing Chen Jingpeng Ge Lin Zhao Yan Di Huifang Song Ge Li Xiaoming Yi Zonglin Su Fangyuan 《新型炭材料（中英文）》 SCIE EI CSCD 北大核心 2026年第2期508-524,I0062-I0066,共17页
The electrochemical stability of lithium-ion batteries strongly depends on the thickness of the solid electrolyte interphase(SEI)formed on graphite anodes.Nevertheless,electrolyte decomposition at the anode surface,es... The electrochemical stability of lithium-ion batteries strongly depends on the thickness of the solid electrolyte interphase(SEI)formed on graphite anodes.Nevertheless,electrolyte decomposition at the anode surface,espe-cially at 65℃,leads to uncontrolled SEI growth.We have designed a hybrid negative electrode by incorporating hard carbon(HC)into graphite to increase the surface work function,which effectively hinders electron escape,thereby reducing electrolyte reduction and inhibiting thick SEI formation at 65℃.The disordered structure of HC faciitates lithiumion diffusion and prevents lithium plating on the electrode surface.As a result,a hybrid negative electrode containing 50%HC has an especially high capacity(98 mAh/g)at 8 C and long cycle life at 0.5 C at room temperature.Further-more,in a full battery it has an excellent capacity(128.54 mAh/g)and stable floating charge for 144 h at 65℃.The electrode achieves a balance between high energy density and high-power density for lithium-ion batteries,thus maintaining stability even during a floating charge at a temperature of 65℃.This is attributed to the formation of a thinner and more robust SEI.This study provides a mechanistic understanding of how the electrode work function governs electrolyte decomposition and SEI evolution,offering a practical strategy for slowing the degradation of lithium-ion batteries at 65℃. 展开更多
关键词 Hybrid negative electrode Graphite Hard carbon Solid electrolyte interphase High temperature floating charge
暂未订购 下载PDF
Improving the Electrochemical Properties of SiOx/Graphite Anode for High-Performance Lithium-Ion Batteries by Ultrathin Lithium Film Prelithiation 认领 引用
15
作者 Wan-Xing Zhang Jia-Jun Wang +12 位作者 Jin-Yang Li Ya-Jun Hou He Huang Qiu-Jiang Dong Wan-Yao Li Hao Guo Hong Zhang Zhao-Yong Sun Qiang Chen Ying Chen Xiao-Peng Han Yi-Da Deng Wen-Bin Hu 《Rare Metals》 SCIE EI CAS CSCD 2026年第4期382-393,共12页
High-capacity SiOx/graphite(SiO/G)anodes offer great potential for advancing lithium-ion battery technology;however,their practical application is limited by low initial coulombic efficiency(ICE)and rapid capacity ... High-capacity SiOx/graphite(SiO/G)anodes offer great potential for advancing lithium-ion battery technology;however,their practical application is limited by low initial coulombic efficiency(ICE)and rapid capacity decay.These challenges primarily arise from unstable phase transitions and the formation of the solid electrolyte interphase(SEI).Prelithiation strategies that aimed at compensating lithium loss have emerged as an effective solution,showing significant advancements in both anode and cathode research.Nevertheless,the interfacial evolution and mechanisms underlying performance enhancement remain unclear.In this work,we demonstrate roll-to-roll contact prelithiation of SiO/G anodes using an ultrathin lithium film,resulting in improved ICE,cycling stability,and rate capability.The contact prelithiation mechanism of silicon-based anodes was investigated via a combination of in situ and ex situ characterizations alongside electrochemical analyses.These studies reveal that the formation of SEI contains multiple lithium silicate phases during the first cycle of prelithiation.This SEI exhibits enhanced conductivity and stability,which contribute to improved cycling performance and rate capability of the prelithiated anode.The prelithiated silicon-carbon composite anode achieved an ICE of 96%in 5.4 Ah pouch cell tests and demonstrated excellent capacity retention of 74%after 500 cycles.This study not only elucidates the critical role of interfacial evolution in SiOx/graphite anodes but also proposes a rational strategy based on phase-phase interface synergistic design for developing durable,highperformance silicon-based anodes suitable for next-generation lithium-ion batteries. 展开更多
关键词 contact prelithiation lithium-ion batteries SiOx/graphite anodes solid electrolyte interphase
暂未订购 下载PDF
Microstructure and the corrosion resistance of SiC reinforced pyrolytic graphite coating under physical vapor transport SiC environment 认领 引用
16
作者 TAO Xian-cheng SUN Wei +3 位作者 SUN Ye-hua DENG Nan-jun WANG Zi-wei XIONG Xiang 《Journal of Central South University》 SCIE EI CAS CSCD 2026年第1期131-143,共13页
In order to effectively prevent the contamination of carbon particle volatiles during high-purity SiC crystals are prepared using the physical vapor transport(PVT)method in ultra-high temperature environments(T≥2000... In order to effectively prevent the contamination of carbon particle volatiles during high-purity SiC crystals are prepared using the physical vapor transport(PVT)method in ultra-high temperature environments(T≥2000℃),this study innovatively attempts to protect graphite materials with SiC reinforced pyrolytic graphite(PyG)coating.It is discovered by preparing the SiC particle layer,the degree of graphitization and stability of PyG coating can be improved.The corrosion test results demonstrated that the SiC reinforced PyG coating can maintain an intact coating with a high graphitization degree after the SiC vapour corrosion test of 2050℃-120 h.Conversely,the samples with and without PyG coating reveal porous and eroded surfaces.Furthermore,following the SiC vapour corrosion test,the PyG coating sample’s integral ratio of D-band and G-band(ID/IG)of Raman spectrum test data,reduced by 6.5%,while the SiC reinforced PyG coating decreased by 17.2%,indicating its excellent corrosion resistance.The application of SiC reinforced pyrolytic graphite coating in preparing the SiC single crystal might received a theoretical foundation according to this work. 展开更多
关键词 pyrolytic graphite silicon carbide chemical vapour reaction high-temperature chemical vapour deposition SiC crystal growth corrosion resistance
暂未订购 下载PDF
Thermal activation of graphitic carbon nanosheets for highperformance oxygen electrocatalysis 认领 引用
17
作者 Yongqi Chen Zongheng Cen +5 位作者 Junlong Huang Tan Yi Min Liang Yiwei Ji Ming Liu Shaohong Liu 《Energy Materials and Devices》 CAS 2026年第1期27-35,共9页
Carbon-based electrocatalysts have considerable potential for application in renewable and clean energy conversion systems.Although graphitic carbons have the advantages of high conductivity and electrolyte corrosion ... Carbon-based electrocatalysts have considerable potential for application in renewable and clean energy conversion systems.Although graphitic carbons have the advantages of high conductivity and electrolyte corrosion resistance,their sp2-hybridized skeleton often leads to poor porosity and insufficient intrinsic active sites,resulting in suboptimal catalytic activity for sluggish multi-electron redox reactions.Herein,we demonstrate an efficient strategy for the activation of lowactive graphitized carbon nanosheets by a thermal-driven nitrogen atom removal process.The elimination of nitrogen atoms at high temperatures facilitates the rearrangement of neighboring carbon atoms,leading to numerous carbon defects and an increased surface area,while retaining the long-range ordered graphitic structure.As a result,the asobtained defect-enriched porous graphitized carbon nanosheets(DPGCNSs)simultaneously combine abundant highly active intrinsic defects with a high graphitization degree and numerous micro/mesopores,demonstrating low overpotential and favorable kinetics for oxygen reduction and oxygen evolution reactions.Remarkably,rechargeable Zn-air batteries with DPGCNSs catalysts demonstrate superior cycling performance,exceeding 700 cycles with no obvious voltage fading. 展开更多
关键词 graphitic carbon carbon defect thermal activating oxygen electrocatalysis Zn-air battery
暂未订购 下载PDF
Hexagonal B-C-N composite consisting of h-BN and graphite separated by B-C nanolayer 认领 引用
18
作者 Baoyin Xu Xiaohong Yuan +10 位作者 Bingtao Feng Yifeng Jiang Yaqi She Zhanhui Ding Yue Pan Shucheng Liu Kuo Hu Zhaodong Liu Quanjun Li Bingbing Liu Hu Tang 《Matter and Radiation at Extremes》 SCIE EI CAS CSCD 2026年第2期85-94,共10页
Graphite and hexagonal boron nitride(h-BN),despite their structural similarity,exhibit opposing electronic properties,namely,metallic conductivity and wide-bandgap insulation,respectively.In recent years,graphene-h-BN... Graphite and hexagonal boron nitride(h-BN),despite their structural similarity,exhibit opposing electronic properties,namely,metallic conductivity and wide-bandgap insulation,respectively.In recent years,graphene-h-BN heterostructures have attracted significant research interest,with the resulting hybrid B-C-N atomic-layer systems exhibiting distinctive electronic properties.Notably,interface effects play a decisive role in governing the performance of these heterostructures.Nevertheless,owing to the lack of high-quality composites,the interfacial structure in B-C-N materials and the correlation with critical properties such as charge transport and band structure modulation are not fully clear.Here,we report the direct synthesis of a millimeter-sized hexagonal B-C-N composite via a solvent method under high-pressure and high-temperature conditions.Structural characterization reveals that the synthesized B-C-N composite contains isolated graphite and h-BN.Compared with pure h-BN,the B-C-N composite has a narrower bandgap and shows a pronounced photoelectric response in the visible light region.More interestingly,we find a graphite-like B-C compound with a thickness of about 30 nm at the graphite-h-BN interface,which forms Schottky junctions with graphite,thus realizing rectification properties.Our findings provide a method for synthesizing highquality B-C-N composites and offer new insights into the structure of the graphite-h-BN interface. 展开更多
关键词 graphite photoelectric response electronic propertiesnotablyinterface effects high pressure high temperature synthesis hexagonal boron nitride interface effects hexagonal b c n composite Schottky junction
暂未订购 下载PDF
One-step construction of N-vacancy-rich carbon doped g-C3N4/g-C3N4Z-type homojunction and its coupling with persulfate for tetracycline degradation 认领 引用
19
作者 ZHU Ze-min ZHENG Guo-dong +3 位作者 ZHOU Yong-hua CHEN Li-miao WU Qiu-mei YUAN Tie-chui 《Journal of Central South University》 SCIE EI CAS CSCD 2026年第5期1987-2004,共18页
Graphitic carbon nitride(g-C3N4)has been widely applied in advanced oxidation processes based on persulfate(PS)for photocatalytic degradation of aqueous pollutants,yet it still suffers from limitations such as w... Graphitic carbon nitride(g-C3N4)has been widely applied in advanced oxidation processes based on persulfate(PS)for photocatalytic degradation of aqueous pollutants,yet it still suffers from limitations such as weak redox capability,low electrical conductivity and severe charge recombination.In this study,via building a confined environment,the doped-C and nitrogen vacancy(Nv)were simultaneously introduced in g-C3N4through one-step calcination.Compared to CN-M derived from melamine,the urea-derived CN-U exhibits higher concentrations of doped-C and Nv,which leads to different band structures.The valence band(VB)and conduction band(CB)of CN-M shift more positively than those for CN-U,with the potential differences of VB and CB being 0.31 and 0.36 eV,respectively.As a result,a Z-type g-C3N4/g-C3N4homojunction(CN-UM)derived from the mixture of urea and melamine was constructed with the minimum resistance,the lowest charge recombination rate and the high redox capacity retained.The tetracycline degradation efficiency and degradation rate constant by CN-UM coupling with PS reach 99%and 0.08989 min-1,respectively,after irradiation for 60 min,along with the excellent cycling stability.The active species h+,·O2-,·OH and SO4·-play roles during the degradation process,with the contributions from h⁺and·O2-higher than those from·OH and SO4·-. 展开更多
关键词 graphitic carbon nitride g-C3N4/g-C3N4Z-type homojunction carbon doping nitrogen vacancy tetracycline degradation
暂未订购 下载PDF
Sustainable Synthesis of Edge-Dominant Pyridinic Nitrogen-Doped Carbon from Tannic Acid for High-Performance Vanadium Redox Flow Batteries 认领 引用
20
作者 Heeyeon An Sieun Jeon Yongjin Chung 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2026年第2期1-14,共14页
A novel carbon material with edge-dominant pyridinic nitrogen doping is synthesized from tannic acid(TA),an agricultural byproduct,using a quick and straightforward two-step microwave irradiation technique.Tris(2-amin... A novel carbon material with edge-dominant pyridinic nitrogen doping is synthesized from tannic acid(TA),an agricultural byproduct,using a quick and straightforward two-step microwave irradiation technique.Tris(2-aminoethyl)amine(TAEA)plays a dual role in this process,acting as a condensing agent for TA in the initial step and providing nitrogen for the pyridinic structure in the second step.This approach results in a distinctive carbon structure(C–TA/TAEA)characterized by enhanced graphitic features,fewer imperfections,and similar hydrophilicity.The edge pyridinic configuration lowers the desorption energy of V3+complexes and the deprotonation energy of VO2+complexes,thereby boosting the catalytic activity for vanadium ion redox reactions(VIRR)by influencing the rate-limiting steps of both positive and negative side VIRRs.When applied to commercial thermal-treated graphite felt(T-GF/[C-TA/TAEA]),the material demonstrates stable performance during vanadium redox flow battery(VRFB)single cell testing,even at 500 mA cm2,showing improved energy efficiency(EE)and discharge capacity compared to T-GF.Furthermore,when applied to pristine graphite felt(GF/[C–TA/TAEA]),the material maintains a 94.12%discharge capacity retention rate over 1000 cycles at 400 mA cm2,underscoring its potential as an eco-friendly,energy-efficient treatment method for producing VRFB electrodes. 展开更多
关键词 graphitic carbon microwave tannic acid tris(2-aminoethyl)amine vanadium redox flow battery
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 2 … 66 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈