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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
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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
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Ultrafast Catalytic Decomposition Reaction Using a ZIF-67@Cellulose Nanofiber Composite-Based Cobalt/Nitrogen Co-Doped Nanoporous Carbon for Water Treatment 认领 引用
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作者 Wen-Kai Zhu Ye Song +9 位作者 Du-Juan Wu Zhuo-Xin Liao Donggyun Kim Jinhyeon Park Jungmok You Minsu Han Song Li Guang-Yao Li Chao-Hai Wang Jeonghun Kim 《Rare Metals》 SCIE EI CAS CSCD 2026年第3期581-596,共16页
Recently,cobaltitrogen co-doped materials have emerged as heterogeneous catalysts to activate peroxymonosulfate(PMS)and have been applied to advanced oxidation processes for environmental remediation.However,their rec... Recently,cobaltitrogen co-doped materials have emerged as heterogeneous catalysts to activate peroxymonosulfate(PMS)and have been applied to advanced oxidation processes for environmental remediation.However,their recyclability and reusability remain major barriers to practical application.In this work,we integrated cellulose nanofibrils(CNFs)as a binder with Co-based zeolitic imidazolate framework-67(ZIF-67)and carbonized,yielding a reusable Co/N co-doped carbonaceous material.Briefly,a self-assembly strategy was employed to construct two-dimensional ZIF-67@CNFs hybridized materials,followed by a straightforward pyrolysis process to fabricate Co/N co-doped CNFs(CoNCNFs).Typical organic pollutants were selected as the target contaminants to investigate the catalytic performance of the CoNCNFs.The CoNCNFs achieved outstanding catalytic activity toward degrading the organic pollutants,with almost 100%degradation within 5 min.Additionally,the reaction parameters for the pollutants/PMS system were optimized.Furthermore,the CoNCNFs treated by an annealing process exhibited promising stability and reusability even after five consecutive reactions.Notably,scavenger experiments demonstrated that both SO4·-,·OH,O2·-,and 1O2participated in the catalytic degradation process,whereas SO4·-played an important role.This work provides a new strategy to construct novel Co/N co-doped carbonaceous material as efficient heterogeneous catalysts for environmental remediation. 展开更多
关键词 Co/N co-doped nanoporous carbon peroxymonosulfate ultrafast reaction ZIF-67
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Chloride-mediated electrocatalytic radical generation on S,N co-doped Ti3C2Tx:Synergistic superoxide and singlet oxygen production for enhanced tetracycline hydrochloride degradation 认领 引用
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作者 Qian Zhang Fan Zhang +3 位作者 Zhen-yi Qu Zhi Huang Yan-ying Liu Jun-ming Hong 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第6期260-270,共11页
Heteroatom-doped Ti3C2Txmaterialswith tailored active sites and electron distributions are potential catalysts for the electrocatalytic degradation of pollutants.In this study,a series of S and N doped Ti3... Heteroatom-doped Ti3C2Txmaterialswith tailored active sites and electron distributions are potential catalysts for the electrocatalytic degradation of pollutants.In this study,a series of S and N doped Ti3C2Tx(Px-Ti3C2Tx@NS)samples were synthesized to optimize the electrocatalytic degradation of tetracycline hydrochloride(TC).Furthermore,activation mechanisms involving direct oxidation and reactive oxygen species(ROS)and reactive chlorine species(RCS)generation and the contributions of surficial active sites were elucidated.Degradation rate constants for Ti3C2Tx,pretreated Ti3C2Tx(P-Ti3C2Tx),and the S/N co-doped samples P1-Ti3C2Tx@NS,P3-Ti3C2Tx@NS,and P10-Ti3C2Tx@NS were 0.14,0.12,0.15,0.19,and 0.12 min−1,respectively.Compared with Ti3C2Tx,P3-Ti3C2Tx@NS exhibited the best performance for TC degradation owing to its enhanced RCS generation.Experimental results revealed that HO•can be generated through H2O conversion with or without the assistance of Cl−or RCS.However,the presence of Cl−and the conversion products of RCS considerably enhanced the generation of O2•−and 1O2.The exceptional performance of P3-Ti3C2Tx@NS in the presence of Cl−was attributed not only to RCS(especially Cl2•−)but also to their secondary products,O2•−and 1O2.Moreover,theoretical calculations confirmed the transfer of electrons from Ti to Cl,and the electron affinity of Ti atoms was enhanced by co-doping with N and S.These findings provide a beneficial approach for mechanism regulation based on ROS and RCS and insights into electrocatalytic degradation. 展开更多
关键词 S,N co-doped Ti3C2Tx Electrocatalytic oxidation degradation Active chlorine Mechanism
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The synergistic effect of non-compensated Cu/N co-doping and graphene enhances the dual-channel generation of H2O2 over TiO2 photocatalysts 认领 引用 被引量：2
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作者 Qianqian Shen Chenlong Dong +3 位作者 Shilong Feng Xueli Zhang Qiurong Li Jinbo Xue 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2025年第11期252-264,共13页
Modulating the electronic structure of a photocatalyst and constructing spatially separated redox sites are key strategies for achieving the photocatalytic dual-channel generation of H2O2.In this study,a graphen... Modulating the electronic structure of a photocatalyst and constructing spatially separated redox sites are key strategies for achieving the photocatalytic dual-channel generation of H2O2.In this study,a graphene-modified non-compensated Cu/N-co-doped titanium dioxide(Cu-N-TiO2GO)photocatalyst was designed for the efficient synthesis of H2O2 via a dual-channel pathway.Precise modulation of the TiO2 conduction band position was achieved through the synergistic coupling of Cu 3d orbitals hybridized with Ti 3d orbitals and hybridization of N 2p orbitals with O 2p orbitals.This approach significantly improved the utilization of sunlight while satisfying the redox potential requirements.Cu doping not only promoted the formation of oxygen vacancies but also reduced the formation of Ti3+ions,the photogenerated charge recombination centers.The non-compensated doping of N effectively increased the solubility of Cu2+ions in the titanium dioxide lattice,enhanced the adsorption of hydroxyl radical intermediates,and created conditions for the subsequent hydroxyl radical combinations promoting the generation of H2O2.In addition,the introduction of highly conductive graphene improved the interfacial carrier separation efficiency while realizing the spatial separation of redox sites,creating conditions for dual-channel reactions.The experimental results showed that the H2O2 yield of Cu-N-TiO2GO under simulated sunlight reached 1266.7μmol/L,which was 25.2 times higher than that of pristine TiO2.This study elucidated the synergistic mechanism of the energy band structure modulation and interfacial optimization,which provided a new idea for the design of dual-channel H2O2 production photocatalysts. 展开更多
关键词 Photocatalytic production of H2O2 Dual channel Modulation of energy band structure Cu/N co-doping
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A N,S co-doped carbon produced from soybean pods for use as the anode in sodium-ion batteries 认领 引用
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作者 Yao Xuehui Wu Jing +6 位作者 Chen Liqing Bai Jie Wang Li Zhang Qiqi Guo Fanhui Wu Jianjun Zhang Yixin 《新型炭材料（中英文）》 SCIE EI CSCD 北大核心 2026年第1期157-172,I0024-I0030,共16页
Hard carbon(HC)is a promising anode material for sodium-ion batteries(SIBs)because of its large interlayer spacing and structural stability.However,it has a low initial Coulombic efficiency(ICE)and poor reversible spe... Hard carbon(HC)is a promising anode material for sodium-ion batteries(SIBs)because of its large interlayer spacing and structural stability.However,it has a low initial Coulombic efficiency(ICE)and poor reversible specific capacity which limit its use.We report the use of biomass soybean pods as the precursor of a nitrogen and sulfur co-doped hard carbon with abundant mesopores,fabricated by a simple,low-cost and sustainable approach.When used as the anode for sodium-ion batteries,the relatively high nitrogen doping(~17%,mass fraction),ultra-low specific surface area(9.6 m2g−1),and the large amount of pyridinic-N coordination combine to give an excellent electrochemical performance.The material has an outstanding electrochemical performance with a specific capacity of 425.0 mAh g−1,and an ICE of 83.7%at a current density of 0.1 A g−1.The capacity retention rate is as high as 99.5%after 110 cycles within a wide current range of 0.05-1 A g−1.An assembled full cell has an excellent cycling stability with 97.3%capacity retention after 100 cycles at a current density of 0.2 A g−1,and the energy density can reach as high as 141.2 Wh kg−1at 1 A g−1. 展开更多
关键词 Biomass hard carbon Porous carbon materials N,S co-doping Electrochemical properties Sodium-ion battery
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P-N阻燃剂对低密度纤维板热烟释放性能的影响机制 认领 引用 被引量：1
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作者 康地 张世琰 +2 位作者 李志高 袁利萍 范友华 《建筑材料学报》 EI CAS CSCD 北大核心 2026年第3期347-355,共9页
为了提升纤维板的阻燃性能,以氨基三亚甲基膦酸(ATMP)、1,3,5-三(2-羟乙基)氰尿酸(THEIC)和三聚氰胺(MEL)为原料,合成了一种新型P-N阻燃剂1,3,5-三(2-羟乙基-氨基(亚甲基膦酸酯-二-亚甲基磷酸三聚氰胺盐))氰尿酸(TAM),并将其与竹纤维复... 为了提升纤维板的阻燃性能,以氨基三亚甲基膦酸(ATMP)、1,3,5-三(2-羟乙基)氰尿酸(THEIC)和三聚氰胺(MEL)为原料,合成了一种新型P-N阻燃剂1,3,5-三(2-羟乙基-氨基(亚甲基膦酸酯-二-亚甲基磷酸三聚氰胺盐))氰尿酸(TAM),并将其与竹纤维复合,通过热压工艺制备出阻燃低密度纤维板(LDF)。对TAM的化学结构进行了表征,并探讨了其添加量对LDF热解行为和阻燃性能的影响规律。结果表明:新型P-N阻燃剂TAM已成功合成,所制备的LDF具有良好阻燃性能;对比对照试样,当TAM添加量为15%时,LDF的极限氧指数达35.7%,峰值热释放速率(PHRR)降低了20.15%,总烟生成量TSP降低了84.70%,残炭率增加了66.25%;TAM在燃烧过程中通过气相稀释、自由基捕获和酸催化成炭机制,赋予纤维板优异的阻燃性能。 展开更多
关键词 纤维板 P-N阻燃剂 阻燃性能 阻燃机理
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Strategically designing and fabricating nitrogen and sulfur Co-doped g-C3N4 for accelerating photocatalytic H2 evolution 认领 引用 被引量：6
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作者 Haitao Wang Lianglang Yu +2 位作者 Jiahe Peng Jing Zou Jizhou Jiang 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2025年第5期111-119,共9页
Doping engineering is an effective strategy for graphitic carbon nitride(g-C3N4)to improve its photocat-alytic hydrogen evolution reaction(HER)performance.In this work,a novel nitrogen and sulfur co-doped g-C_(3... Doping engineering is an effective strategy for graphitic carbon nitride(g-C3N4)to improve its photocat-alytic hydrogen evolution reaction(HER)performance.In this work,a novel nitrogen and sulfur co-doped g-C3N4(N,S-g-C3N4)is elaborately designed on the basis of theoretical predictions of first-principle density functional theory(DFT).The calculated Gibbs free energy of adsorbed hydrogen(ΔGH∗)for N,S-g-C3N4 at the N-doping active sites is extremely close to zero(0.01 eV).Inspired by the theoretical predictions,the N,S-g-C3N4 is successfully fabricated through ammonia-rich pyrolysis synthesis strategy,in which ammonia is in-situ obtained by pyrolyzing melamine.Subsequent characterizations indicate that the N,S-g-C3N4 possesses high specific surface area,outstanding light utilization,good hydrophilicity,and efficient carrier transfer efficiency.Consequently,the N,S-g-C3N4 displays an extremely high H2 evolution rate of 8269.9μmol g−1 h−1,achieves an apparent quantum efficiency(AQE)of 3.24%,and also possesses outsatnding durability.Theoretical calculations further demonstrate that N and S dopants can not only introduce doping energy level to reduce the band gap,but also induce charge redistribution to facilitate hydrogen adsorption,thus promoting the photocatalytic HER process.Moreover,femtosecond transient absorption(fs-TA)spectroscopy further corroborates the efficient photogenerated carrier transport of N,S-g-C3N4.This research highlights a promising and reliable strategy to achieve superior photocatalytic activity,and exhibits significant guidance for precise designing high-efficiency photocatalysts. 展开更多
关键词 Theoretical predictions g-C3N4 N and S co-doping Photocatalytic H2evolution
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Neural correlates of impairments in music emotion processing in major depressive disorder:Evidenced from an event-related potential study 认领 引用
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作者 Ya-Nan He Wen-Yu Yang +4 位作者 Jing Zhang Xin-Yu Wang Xue-Zheng Gao Xiao-Hong Liu Zhen-He Zhou 《World Journal of Psychiatry》 SCIE 2026年第6期106-121,共16页
BACKGROUND Patients with major depressive disorder(MDD)commonly exhibit widespread cognitive impairments.Music,as a complex auditory stimulus with relatively high ecological validity,can be utilized to investigate bra... BACKGROUND Patients with major depressive disorder(MDD)commonly exhibit widespread cognitive impairments.Music,as a complex auditory stimulus with relatively high ecological validity,can be utilized to investigate brain information processing mechanisms.Event-related potentials(ERPs)are well-suited for capturing the temporal dynamics of neural processing across successive cognitive stages.However,the number of systematic ERPs studies examining multi-stage musical information processing in MDD patients remains relatively limited.AIM To elucidate the neural mechanisms underlying musical emotion processing deficits in MDD using a multi-stage ERPs framework,and to explore potential neurobiological markers associated with cognitive impairment.METHODS Thirty MDD patients(Diagnostic and Statistical Manual of Mental Disorders,Fifth Edition diagnosis,24-item Hamilton Depression Rating Scale≥20)and twentynine demographically matched healthy controls(HCs)completed a category judgment task with neutral,negative,and positive musical stimuli(4-7 seconds each).Electroencephalogram was recorded using a 64-channel system,and core ERPs components(N100,P200,P300)from the left prefrontal,right prefrontal,and central regions were analyzed.Behavioral(accuracy,reaction time)and ERPs data were examined via repeated-measures ANOVA.RESULTS Behaviorally,MDD patients showed significantly lower overall accuracy(P=0.008)and longer reaction times(P=0.014)than HC.Both groups responded faster to positive music than neutral and negative music(P<0.001).Neurophysiologically,significant“group×emotional condition”or“group×region”interactions emerged for N100(button response:P=0.007),P200(onset:P=0.012),and P300(onset:P=0.008).Key neural features of MDD included enhanced central N100 amplitude,failure to differentiate neutral from negative music at the P200 stage,and absent stimulus type-related modulation of P300,contrasting with HCs’differentiated neural responses.Behaviorally,MDD patients showed significantly lower overall accuracy(P=0.008)and longer reaction times(P=0.014)than HC.Both groups responded faster to positive music than neutral and negative music(P<0.001).Neurophysiologically,significant“group×emotional condition”or“group×region”interactions emerged for N100(button response:P=0.007),P200(onset:P=0.012),and P300(onset:P=0.008).Key neural features of MDD included enhanced central N100 amplitude,failure to differentiate neutral from negative music at the P200 stage,and absent stimulus type-related modulation of P300,contrasting with HCs’differentiated neural responses.CONCLUSION MDD patients exhibit multi-stage neural functional abnormalities in musical emotional processing.ERPs abnormalities reflect deficits in early sensory-attentional allocation(N100),stimulus feature discrimination(P200),and late cognitive evaluation(P300).These stage-specific ERPs profiles can serve as potential neurobiological markers for cognitive impairments in MDD,highlighting the utility of musical paradigms in unraveling the brain functional mechanisms of depression. 展开更多
关键词 Major depressive disorder Emotional processing Musical emotional information Event-related potentials N100 P200 P300
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Enhanced Spin-Engineering Photothermoelectric-Enzymatic Catalysis System via Lattice Mismatch-Induced Jahn-Teller Distortion for Tumor Therapy 认领 引用
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作者 Pengyu Zang Meiqi Yang +6 位作者 Chenghao Yu Rui Zhang Avez Sharipov Ruifang Shen Dan Yang Shili Gai Piaoping Yang 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第9期799-825,共27页
Oxygen-dependent electrodynamic therapy is hindered by electron–hole recombination and hypoxia.This study provides a heterojunction-induced Jahn–Teller distortion-enhanced spin-engineering Fe3O4–Ag2S nano-... Oxygen-dependent electrodynamic therapy is hindered by electron–hole recombination and hypoxia.This study provides a heterojunction-induced Jahn–Teller distortion-enhanced spin-engineering Fe3O4–Ag2S nano-platform to address these limitations.The large interfacial lattice mismatch induces previously unrecognized Jahn–Teller distortions on high-spin Fe sites,modifying d-orbital splitting and enhancing spin-polarized catalytic activity.This lattice–spin–carrier coupling synergistically amplifies catalase-,peroxidase-,and glutathioneox-like pathways.Under near-infrared irradiation,the photothermal effect of Fe3O4activates the thermoelectric response of Ag2S and drives continuous hot-carrier injection.Thermoelectric fields drive hot holes to boost catalase activity through Jahn–Teller effect-enhanced spin catalysis sites and drive hot electrons to convert O2–to cytotoxic O2–.1O2under the Jahn–Teller distortion,promoting and forming a self-amplifying catalytic loop.Fine structure characterization and density functional theory calculations collectively verify strain-driven Fe–O bond differentiation and spin-state reconfiguration.The heterojunction achieves potent thermoelectric–enzyme co-catalysis with 95%tumor inhibition under near-infrared irradiation and supports dual-mode imaging.This work establishes a framework for designing high-performance photothermal–thermoelectric catalysts through crystal field/spin-state modulation in p–n heterojunctions,synergistically boosting multi-enzyme activity and catalytic efficiency for hypoxia-resistant therapy. 展开更多
关键词 Spin engineering Jahn–Teller effect Multi-enzyme activity P–n junctions Photothermoelectric therapy
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A B,N co-doped carbon nanotube array with anchored MnO2 nanosheets as a flexible cathode for aqueous zinc-ion batteries 认领 引用 被引量：2
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作者 YUAN Yan-bing ZHAO Zong-bin +3 位作者 BI Hong-hui ZHANG Run-meng WANG Xu-zhen QIU Jie-shan 《新型炭材料（中英文）》 SCIE EI CAS CSCD 北大核心 2025年第1期200-210,共11页
For rechargeable aqueous zinc-ion batteries(ZIBs),the design of nanocomposites comprised of electrochemically active materials and carbon materials with novel structures has great prom-ise in addressing the issue of e... For rechargeable aqueous zinc-ion batteries(ZIBs),the design of nanocomposites comprised of electrochemically active materials and carbon materials with novel structures has great prom-ise in addressing the issue of electrical conductivity and structural stability in the electrode materials during electrochemical cycling.We report the production of a novel flexible electrode material,by anchoring MnO2 nanosheets on a B,N co-doped carbon nanotube ar-ray(BNCNTs)grown on carbon cloth(BNCNTs@MnO2),which was fabricated by in-situ pyrolysis and hydrothermal growth.The generated BNCNTs were strongly bonded to the surface of the car-bon fibers in the carbon cloth which provides both excellent elec-tron transport and ion diffusion,and improves the stability and dur-ability of the cathode.Importantly,the BNCNTs offer more active sites for the hydrothermal growth of MnO2,ensuring a uniform dis-tribution.Electrochemical tests show that BNCNTs@MnO2 delivers a high specific capacity of 310.7 mAh g−1 at 0.1 A g−1,along with excellent rate capability and outstanding cycling stability,with a 79.7% capacity retention after 8000 cycles at 3 A g−1. 展开更多
关键词 B,N co-doped carbon nanotube Manganese dioxide Flexible electrode Aqueous zinc-ion batteries
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Layered nitrogen application increases post-anthesis nutrient accumulation and grain yield of wheat by coordinating root morphology and nutrient transporter gene expression 认领 引用
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作者 Yang Zhou Yongqiao Zhang +5 位作者 Xinhua Lyu Jiaming Cui Shuang Li Pengjia Wu Xiang Lin Dong Wang 《The Crop Journal》 SCIE CSCD 2026年第3期997-1007,共11页
Layered nitrogen(N)application to wheat is intended to avert nutrient retention in the topsoil,which limits deep root development and grain yield.In a two-year field experiment on the Loess Plateau comparing two N tre... Layered nitrogen(N)application to wheat is intended to avert nutrient retention in the topsoil,which limits deep root development and grain yield.In a two-year field experiment on the Loess Plateau comparing two N treatments:240 kg N ha-1applied at the 8-cm soil depth or in a 1:2:1 ratio to the 8-,16-,and 24-cm soil layers,the layered treatment increased grain yield,post-anthesis N accumulation,phosphorus(P)accumulation,root biomass,and soil organic carbon and available P in the 8-24 cm layers.It also upregulated N and P transporter genes in roots across different soil layers.Layered N application optimized the vertical nutrient distribution in the wheat root zone,induced adaptive root architectural development,and activated the transcriptional regulatory network of nutrient uptake,which peomoted post-anthesis nutrient assimilation and ultimately improving grain yield. 展开更多
关键词 Layered fertilization Root morphology Post-anthesis nutrient accumulation Root N and P transporter genes Wheat grain yield
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锗基p-i-n结构阻挡杂质带红外探测器的温度影响机制 认领 引用
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作者 陈天业 刘赤县 +7 位作者 王泽欣 胡清智 潘昌翊 凌静威 刘晓艳 朱家旗 邓惠勇 戴宁 《红外与毫米波学报》 SCIE EI CAS CSCD 北大核心 2026年第3期393-401,共9页
BIB(阻挡杂质带)探测器在红外天文空间探测等领域具有重要应用价值,然而关于其温度依赖机制的研究仍较为有限。文章采用近表面处理技术,制备了一种基于高纯锗材料的平面p-i-n结构BIB红外探测器,在低温条件下表现出优异的电学与光电响应... BIB(阻挡杂质带)探测器在红外天文空间探测等领域具有重要应用价值,然而关于其温度依赖机制的研究仍较为有限。文章采用近表面处理技术,制备了一种基于高纯锗材料的平面p-i-n结构BIB红外探测器,在低温条件下表现出优异的电学与光电响应性能。3.3 K时反偏电流低至15 pA,在15 K以下保持良好的响应性能,黑体探测率高达3.5×1012 cm·Hz1/2·W-1,但随着温度升高降低。采用包含光激发、热激发与碰撞电离过程的电流模型模拟结果与实验数据,揭示温度升高引起耗尽区显著收缩降低载流子收集效率为主要作用机制,为BIB探测器在低温红外探测中的结构设计与性能优化提供了理论支撑和实验依据。 展开更多
关键词 凝聚态物理 BIB探测器 p-i-n结构 低温红外探测
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氮掺杂石墨烯量子点-NaBiO3/BiOCl p-n异质结光催化剂的制备及可见光催化降解罗丹明B的性能研究 认领 引用
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作者 王津津 伍素云 +3 位作者 刘水林 刘宁 孙爱明 唐新德 《环境科学学报》 CAS CSCD 北大核心 2026年第2期146-157,共12页
在环境光催化中,提高光生载流子分离效率从而提高光催化性能仍然具有挑战性.本研究通过简单的离子蚀刻和原位沉积方法开发了N掺杂石墨烯量子点(NGQDs)-NaBiO3/BiOCl(NNBC)p-n异质结光催化剂,其在光生电子/空穴对的分离方面表现出优... 在环境光催化中,提高光生载流子分离效率从而提高光催化性能仍然具有挑战性.本研究通过简单的离子蚀刻和原位沉积方法开发了N掺杂石墨烯量子点(NGQDs)-NaBiO3/BiOCl(NNBC)p-n异质结光催化剂,其在光生电子/空穴对的分离方面表现出优异的性能,并对罗丹明B(RhB)显示出显著增强的可见光降解活性,这主要归因于NaBiO3和BiOCl形成的p-n异质结以及NGQDs的强电子转移/存储能力.在NNBC可见光降解RhB的过程中,超氧化自由基和光生空穴为主要活性物种,线性氧是次要活性物种.此外,NNBC复合材料优异的光催化活性和高光稳定性使得其在污染物降解方面具有广阔的应用潜力.本研究为提高商品化的NaBiO3·2H2O在环境应用中的光催化效率提供了一种新的策略. 展开更多
关键词 NGQDs-NaBiO3/BiOCl(NNBC) p-n异质结光催化剂 罗丹明B(RhB) 光催化降解机理 可见光
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Lycium barbarum glycopeptide protects neurons from amyloid-beta toxicity 认领 引用
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作者 Zihang Chen Xiao Wang +5 位作者 Simin Wang Zelin Wu Huajun Wang Kin Chiu Xiaofei Zheng Kwok-Fai So 《Neural Regeneration Research》 SCIE CAS CSCD 2026年第10期5013-5019,共7页
Oligomeric amyloid-beta deposition within neurons and its associated neurotoxicity are among the most direct indicators of the onset of Alzheimer's disease.Investigations into strategies aimed at reducing amyloid-... Oligomeric amyloid-beta deposition within neurons and its associated neurotoxicity are among the most direct indicators of the onset of Alzheimer's disease.Investigations into strategies aimed at reducing amyloid-beta accumulation or promoting its clearance in neurons are currently being carried out.Lycium barbarum glycopeptide is rich in biologically active compounds and possesses antioxidant,anti-inflammatory,and neuroprotective properties.This study verified that the oligomer amyloid-beta1-42 induced toxic effects in mouse N2a neuroblastoma cells,resulting in elevated levels of reactive oxygen species and increased expression of the inflammatory enzyme inducible nitric oxide synthase.Lycium barbarum glycopeptide counteracted these effects by alleviating cell damage,enhancing cell viability,reducing the levels of reactive oxygen species and inducible nitric oxide synthase expression,and up-regulating the m RNA levels of antioxidant enzymes,including superoxide dismutase 1,superoxide dismutase 2,and glutathione peroxidase 4.Lycium barbarum glycopeptide also activated the phosphoinositide 3-kinase/Akt/p70S6K signaling pathway and promoted the expression of brain-derived neurotrophic factor,thus exerting neuroprotective effects.These findings indicate that Lycium barbarum glycopeptide may be a promising candidate for the treatment of Alzheimer's disease. 展开更多
关键词 Alzheimer’s disease amyloid-beta brain-derived neurotrophic factor Lycium barbarum glycopeptide N2A cells neuroinflammation neuroprotection oxidative stress PI3K/Akt/p70S6K signaling reactive oxygen species
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Hydrangea-like B/N co-doped carbon-based electrochemical sensors for the efficient and sensitive detection of aristolochic acid in Aristolochia 认领 引用
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作者 Menglin Zhou Lin Zhang +4 位作者 Xuefei Shan Fengqin Chang Wentong Chen Xuguang An Guangzhi Hu 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第12期457-462,共6页
A novel hydrangea-like boron and nitrogen co-doped carbon material synthesised by the cross-linking reaction of spiny spherical polymers and co-doped with boron and nitrogen(B/N)via high-temperature calcination was us... A novel hydrangea-like boron and nitrogen co-doped carbon material synthesised by the cross-linking reaction of spiny spherical polymers and co-doped with boron and nitrogen(B/N)via high-temperature calcination was used to construct an electrochemical sensor for the detection of aristolochic acid.Under optimal conditions,the sensor showed good electrochemical response to aristolochic acid,with a theoretical detection limit of 47.3 nmol/L and the sensitivity reaching 0.31μA Lμmol-1cm-2.Moreover,the sensor was successfully applied to the detection of aristolochic acid in the extracts of Chinese herbal medicine samples,and the detection results were consistent with those of high-performance liquid chromatography.With a strong selectivity for substances to be measured in complex environments,this study provides a new and efficient method by which to detect aristolochic acid in Chinese herbal medicine,which greatly expands the application field of B/N heteroatom-doped carbon materials. 展开更多
关键词 Electrochemical sensors Aristolochic acid Electroanalysis Hydrangea-like B/N co-doped carbon Chinese herbal medicine detection
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N-Bromosuccinimide-Promoted Direct Phosphorylation of Amines with P(O)—H Compounds 认领 引用
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作者 Li Qiaoli Wang Huabin +6 位作者 Qin Yan Zhao Jiamin Han Fang Liu Xiongwei Pan Bowen Huang Qiang Zhou Ying 《有机化学》 SCIE CAS CSCD 北大核心 2026年第3期1060-1069,共10页
A mild,green,high atom economic,convenient and scalable N-bromosuccinimide(NBS)promoted direct phosphorylation strategy of secondary phosphine oxides and amines has been developed for the synthesis of various valuable... A mild,green,high atom economic,convenient and scalable N-bromosuccinimide(NBS)promoted direct phosphorylation strategy of secondary phosphine oxides and amines has been developed for the synthesis of various valuable phosphamide compounds.A variety of substrates were well-tolerated and afforded the desirable compounds in moderate to excellent yields(up to 93%).This reaction proceeds smoothly at room temperature under air atmosphere,without the need for metal catalysts,bases,or high temperature,thus providing a new strategy for the synthesis of phosphamide derivatives. 展开更多
关键词 phosphorylation P(O)—N bond phosphamide compounds amines N-bromosuccinimide(NBS)
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PLA微塑料与镉联合胁迫对土壤全量C、N、P生态化学计量及稳态的影响 认领 引用
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作者 黄尧皓 李府鹏 +3 位作者 仇世晨 张珍明 洪江 颜秋晓 《分析测试学报》 CAS CSCD 北大核心 2026年第7期1598-1604,共7页
为探究聚乳酸(PLA)微塑料与镉(Cd)复合污染对土壤碳、氮、磷循环及微生物养分限制的影响,该研究开展盆栽试验,设置不同浓度PLA与Cd的单一及复合处理,并于培养30 d和60 d测定土壤理化性质,碳、氮、磷含量及相关胞外酶活性,结合酶化学计... 为探究聚乳酸(PLA)微塑料与镉(Cd)复合污染对土壤碳、氮、磷循环及微生物养分限制的影响,该研究开展盆栽试验,设置不同浓度PLA与Cd的单一及复合处理,并于培养30 d和60 d测定土壤理化性质,碳、氮、磷含量及相关胞外酶活性,结合酶化学计量矢量模型分析微生物养分限制动态。结果表明,PLA引发了土壤显著的时间依赖性酸化,复合处理下的酸化趋势持续。PLA作为外源碳显著提升了土壤有机碳(SOC)含量,30 d时增幅为5.26%~26.32%,60 d复合处理下SOC增幅高达148.87%~267.50%。单一处理对全氮(TN)无显著影响,但复合处理使TN显著增加20.00%~27.15%,全磷(TP)在复合处理下的增幅也进一步扩大;同时PLA使C/N和C/P随浓度升高持续增大,60 d复合处理下最高分别达6.97和18.40。酶活性方面,Cd长期抑制碳氮获取酶,而PLA诱导脂肪酶高表达,60 d高浓度复合处理较对照提升315.50%。矢量模型表明,微生物普遍受氮限制,60 d复合处理下达极高水平;而高浓度PLA在培养后期持续供碳,使碳限制得到有效缓解。 展开更多
关键词 PLA微塑料 镉 化学计量 稳态 全量C、N、P
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Interconnected carbon nanocapsules with high N/S co-doping as stable and high-capacity potassium-ion battery anode 认领 引用 被引量：10
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作者 Honghui Bi Xiaojun He +3 位作者 Lei Yang Hongqiang Li Biyu Jin Jieshan Qiu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2022年第3期195-204,I0007,共10页
Carbonaceous materials have drawn much attention in potassium-ion batteries (PIBs) due to their low price and superior physicochemical properties. However, the application of carbonaceous materials in PIB anodes is hi... Carbonaceous materials have drawn much attention in potassium-ion batteries (PIBs) due to their low price and superior physicochemical properties. However, the application of carbonaceous materials in PIB anodes is hindered by sluggish kinetics and large volume expansion. Herein, N/S co-doped carbon nanocapsule (NSCN) is constructed for superior K+ storage. The NSCN possesses 3D nanocapsule framework with abundant meso/macropores, which guarantees structural robustness and accelerates ions/electrons transportation. The high-level N/S co-doping in carbon matrix not only generates ample defects and active sites for K+ adsorption, but also expands interlayer distance for facile K+ intercalation/deintercalation. As a result, the NSCN electrode delivers a high reversible capacity (408 mAh g−1 at 0.05 A g−1), outstanding rate capability (149 mAh g−1 at 5 A g−1) and favorable cycle stability (150m Ah g−1 at 2 A g−1 after 2000 cycles). Ex situ TEM, Raman and XPS measurements demonstrate the excellent stability and reversibility of NSCN electrode during potassiation/depotassiation process. This work provides inspiration for the optimization of energy storage materials by structure and doping engineering. 展开更多
关键词 3D Carbon nanocapsules N/S co-doping Carbon anode Potassium-ion battery
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CYP3A triggers BDE47-induced ferritinophagy and ferroptosis in spermatogenic cells through ROS-mediated m6A regulation of ATG12 认领 引用 被引量：1
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作者 Shuyu Xu Wenxia Fan +7 位作者 Jiangxue Qian Yuewen He Chunjin Li Chao Chen Li Wang Yongquan Yu Chao Wang Shoulin Wang 《Journal of Biomedical Research》 CAS CSCD 2026年第4期364-382,I0001-I0003,共19页
Cytochrome P450 CYP3A(CYP3A)is among the most abundant hepatic cytochrome P450 subfamilies and also mediates the metabolism and toxicity of xenobiotics.Previous studies have reported that CYP3A is also expressed in th... Cytochrome P450 CYP3A(CYP3A)is among the most abundant hepatic cytochrome P450 subfamilies and also mediates the metabolism and toxicity of xenobiotics.Previous studies have reported that CYP3A is also expressed in the testis;however,its role and molecular mechanism in mediating male reproductive damage remain unclear.In this study,through in vitro and in vivo experiments,we demonstrated the role of CYP3A in 2,2',4,4'-tetrabromodiphenyl ether(BDE47)-induced reproductive toxicity.The results showed that BDE47 induced CYP3A expression in mouse testes,leading to oxidative stress and ferroptosis through excessive reactive oxygen species(ROS)and ferrous iron(Fe2+)overload,which was demonstrated by CYP3A overexpression or knockdown experiments in GC-2 cells.Mechanistically,in addition to direct ROS generation during metabolic processing,ferritinophagy contributed to intracellular Fe2+accumulation.Specifically,BDE47-induced ROS was associated with reduced N6-methyladenosine(m6A)modification of Atg12 mRNA and increased autophagyrelated(ATG12)expression,thereby promoting ferritin heavy chain 1(FTH1)degradation and subsequent Fe2+overload.These results were further validated by experiments using hydrogen peroxide or antioxidants in GC-2cells,as well as by Atg12 haploinsufficiency in mice.Our findings demonstrate that CYP3A plays a critical role in male reproductive toxicity induced by BDE47. 展开更多
关键词 cytochrome P4503A 2,2',4,4'-tetrabromodiphenyl ether reactive oxygen species ferritinophagy N6-methyladenosine male reproductive damage
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Abundance and partitioning of nitrogen and phosphorus in Lake Chaohu,China:Seasonal particulate effects on lake re-eutrophication 认领 引用
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作者 Cao Fang Pengcheng Ju +10 位作者 Yafang Song Weikun Li Zongbin Zhang Youfei Fang Yulu Xue Jingjing Zhao Zhangqin Zheng Zhongyi Zhang Xueying Wang Jihua Hao Xiaodong Liu 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第8期11-23,共13页
Nitrogen(N)and phosphorus(P)are two important nutrients for the understanding and management of lake eutrophication.The species partitioning of these nutrients plays an important role in regulating their bioavailabili... Nitrogen(N)and phosphorus(P)are two important nutrients for the understanding and management of lake eutrophication.The species partitioning of these nutrients plays an important role in regulating their bioavailability.Previous studies have mainly focused on dissolved phases of N and P.However,recent studies have noticed that active transformation of particulate N and P may also affect nutrient cycling.In this study,we chose a typically eutrophic lake,Chaohu,and systematically sampled water samples from 14 sites involving the whole lake,and typical inflow as well as outflow rivers over a 12-month period from 2023 to 2024.Our analytical results showed that particulate N and P were the predominant phases throughout the year(mean 26%and 42%),with large seasonal and temporal variations in both particulate and dissolved forms.Further statistical and microscopic observations revealed high partition coefficient values(lgKd(P)of 2.34-5.83;lgKd(N)of 2.33-5.35)and a"particle concentration effect"on the partitioning of N and P between dissolved and particulate phases,attesting to the particulate reactivity(reactive potential of particles)in lake waters,especially for P,during the algae incubation stage.The active transformations between particulate and dissolved phases of N and P were mainly regulated by climate and water chemistry.Overall,our study emphasizes the critical roles of particulate phases in biogeochemical cycling of N and P in Lake Chaohu and advocates for more attention to monitoring the behavior of particulate N and P in future water quality management. 展开更多
关键词 Lake Chaohu Eutrophication N and P cycling Nutrient forms Particulate reactivity Riverine transport
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