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Food-derived extracellular vesicles:isolation,characteristics,bioactivities,applications as targeted delivery carriers and adverse consequences 认领 引用 被引量：1
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作者 Saichao Wei Kehai Liu 《Food Science and Human Wellness》 SCIE CAS CSCD 2026年第2期489-507,共19页
Delivery carriers serve as a highly efficient approach for precision nutrition and medicine;however,artificial delivery carriers are prone to triggering the immune response and have the disadvantages of poor stability... Delivery carriers serve as a highly efficient approach for precision nutrition and medicine;however,artificial delivery carriers are prone to triggering the immune response and have the disadvantages of poor stability and low bioavailability.Extracellular vesicles(EVs),nucleus-free biological particles composed of phospholipid bilayers secreted by living cells,are a new generation of targeted delivery carriers.In recent years,an increasing number of species have been reported to contain EVs.Among them,food-derived extracellular vesicles(FDEVs)show outstanding comprehensive properties.FDEVs are considered to have great application potential due to their wide range of sources,high yields,absence of human pathogenic pathogens,and ethical concerns.In this review,the preparation,nomenclature,physicochemical characteristics,and preservation methods of FDEVs are discussed,as well as their potential protein markers,bioactivities,and applications as novel targeted delivery carriers of FDEVs from animals,plants,and microorganisms.We also summarized the adverse consequences of FDEVs in current studies,and put forward the problems and challenges in the process of FDEVs research and commercialization.In short,the importance of FDEVs has been highlighted,and FDEVs have good application prospects as a new class of targeted delivery carriers.The current problems should be paid attention to and actively solved. 展开更多
关键词 Food-derived extracellular vesicles Bioactivities Targeted delivery carriers Adverse consequences Challenges
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Performance of different biocarriers in MBBR and SBBR systems for wastewater treatment:A review 认领 引用
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作者 Krishna Kumar Raman Sharma S.K.Goyal 《Water Science and Engineering》 EI CAS CSCD 2026年第1期97-109,共13页
Biocarriers play a critical role in moving bed biofilm reactor(MBBR)and sequencing batch biofilm reactor(SBBR)wastewater treatment systems by providing surfaces for biofilm development.Although a wide variety of carri... Biocarriers play a critical role in moving bed biofilm reactor(MBBR)and sequencing batch biofilm reactor(SBBR)wastewater treatment systems by providing surfaces for biofilm development.Although a wide variety of carrier materials and geometries are used,the literature remains fragmented,with most studies focusing on individual carriers and lacking a systematic understanding of how carrier characteristics govern treatment performance across different operational conditions.Additionally,review articles comparing biocarrier efficacy in synthetic wastewater systems are limited.This review article synthesizes the performance of various biocarriers in synthetic wastewater treatment and evaluates their efficiency in reducing chemical oxygen demand(COD),ammonia,and total nitrogen(TN).Reported removal efficiencies range from 68% to 96% for COD,up to 99% for ammonia,and 40.0%—97.5% for TN,depending on carrier design and reactor configuration.Carrierspecific surface areas typically range from 250 m2/m3 to 2800 m2/m3.Analysis reveals that performance is significantly influenced by carrier features such as shape,material,surface roughness,porosity,and specific surface area.Notably,carriers with higher porosity and rough surfaces generally promote superior biofilm formation and pollutant removal,although optimization of surface area may compromise mechanical strength and long-term durability.Operational parameters,such as loading rate,filling ratio,and temperature,also interact with carrier design to determine overall treatment efficiency.While existing studies offer valuable insights,comparative research that links design parameters to treatment performance across varying conditions remains scarce.Future studies should prioritize quantifying relationships between carrier geometry,material properties,and biological activity,as well as developing standardized testing protocols to enable more reliable cross-study comparisons. 展开更多
关键词 Bio-carriers Biofilm Moving bed biofilm reactor Sequential batch biofilm reactor Carrier selection criteria
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Augment of partial nitrification/anammox in biosorption/partial nitrification/anammox process by using functionalized carriers for energy self-sufficient mainstream municipal wastewater treatment 认领 引用
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作者 Tao Liu Xin Liu +3 位作者 Zhaodong Li Sen Qiao Shuo Chen Xie Quan 《ENGINEERING Environment》 SCIE EI CAS CSCD 2026年第2期43-56,共14页
The high energy consumption of conventional activated sludge process is posing significant challenge on the current wastewater industry worldwide.Therefore,the development of energy-efficient wastewater treatment proc... The high energy consumption of conventional activated sludge process is posing significant challenge on the current wastewater industry worldwide.Therefore,the development of energy-efficient wastewater treatment processes is urgently needed.This study proposed an energy self-sufficient biosorption/partial nitrification/anammox process by using functionalized carriers to augment the efficiency of partial nitrification and anammox.Specifically,in biosorption stage,COD was captured into sludge,which could further be converted into bio-methane by anaerobic digestion for energy recovery.In the partial nitrification stage,nitrification-functionalized carriers were used for selective enrichment of ammonia-oxidizing bacteria(AOB)to maintain efficient and stable nitrite accumulation,while anammox-functionalized carriers were utilized in anammox stage for massive anammox bacteria accumulation.Long-term operation results showed that with an averaged influent COD concentration of 200.0 mg/L and total nitrogen(TN)concentration of 60.0 mg/L,the effluent consistently achieved an average COD concentration of 25.4 mg/L and an average TN concentration of 13.6 mg/L,which could meet the national discharge standard(GB18918-2002,China).The use of nitrification-functionalized carriers promoted the survival and enrichment of AOB,while anammox-functionalized carriers similarly facilitated the survival and enrichment of anammox bacteria.The effective colonization resulted in a significant upregulation of genes associated with nitrogen metabolism.This study proposes a novel approach for the in-situ selective enrichment of AOB and anammox bacteria to realize efficient partial nitrification-anammox process,which holds potential for achieving energy-neutral mainstream municipal wastewater treatment with low carbon emissions. 展开更多
关键词 Biosorption Partial nitrification Anammox Functionalized carrier Municipal wastewater
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Design and optimization of area-selective carrier modulation in β-Ga2O3through high temperature oxygen annealing 认领 引用
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作者 Qiuyan Li Qiming He +3 位作者 Jinyang Liu Xuanze Zhou Guangwei Xu Shibing Long 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第5期227-234,共8页
Carrier modulation in beta-gallium oxide(β-Ga2O3)films through an oxygen annealing method is systematically investigated,including annealing time and annealing cap layer(ACL)design.Capacitance-voltage measureme... Carrier modulation in beta-gallium oxide(β-Ga2O3)films through an oxygen annealing method is systematically investigated,including annealing time and annealing cap layer(ACL)design.Capacitance-voltage measurement conducted on vertical SBD structures was used to evaluate the carrier concentration after annealing.The formation of a“surface layer”may suppress the diffusion of oxygen species as the annealing time increases.An 8-hour annealing time resulted in a carrier modulation with an approximately 3-µm-deep low-carrier-concentration layer.The annealing cap layer,consisting of polySi and SiO2,was deposited and patterned to achieve area-selective carrier modulation inβ-Ga2O3.The effective thickness of poly-Si for blocking oxygen diffusion was confirmed by scanning electron microscopy(SEM)for the first time.A definite thickness of SiO2served as both etching stop layer and lift-off layer for poly-Si.According to simulation results,the non-ideal surface caused extra high peak electric field in theβ-Ga2O3device.A combination of an optimized dry etching method and low-compressive-stress deposition technology was employed to eliminate the bird's beak-like shape structure that appeared at the edges of the patterns and bulges on theβ-Ga2O3surface after annealing.The feasibility of the carrier modulation technology enables the diversity ofβ-Ga2O3devices fabrication. 展开更多
关键词 Ga2O3 oxygen annealing carrier modulation power device
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Low‑Temperature CH4 Reforming and Water Splitting with Activated NiO/CeO2 as Oxygen Carrier 认领 引用
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作者 Chunli Han Akira Yoko +7 位作者 Yi‑Ping Chang Manuel Harder Kakeru Ninomiya Maiko Nishibori Zhong Yin Ardiansyah Taufik Satoshi Ohara Tadafumi Adschiri 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第8期733-750,共18页
Energy-efficient and selective hydrocarbon reforming techniques are crucial for a sustainable future.This study develops a highly active and selective NiO/CeO2 oxygen carrier(OC)for lowtemperature chemical looping ... Energy-efficient and selective hydrocarbon reforming techniques are crucial for a sustainable future.This study develops a highly active and selective NiO/CeO2 oxygen carrier(OC)for lowtemperature chemical looping partial oxidation of methane and water splitting.By using cubic CeO2(cCeO2)as support and precisely tailoring the size and electronic structure of Ni active sites,simultaneous low-temperature CH4 activation and high syngas selectivity(CH4-to-syngas selectivity:>98.5%)were achieved,effectively suppressing CH4 cracking and complete oxidation.The as-synthesized NiO/cCeO2 OCs operate efficiently at 600℃,significantly lower than the conventional temperature,800-900℃.Nearly pure H2 is produced in the water splitting step.High selectivity eliminates the need for additional gas separation and purification units.It is noteworthy that reaction-driven OC activation pretreatment plays a significant role in achieving the stable low-temperature activity,which leads to the moderate aggregation(10-20 nm)of Ni species and transforms Ni2+from a low-spin state into a high-spin state.The OC structural evolution during reaction,key active sites responsible for water splitting,and the support effect are systematically investigated.The highly precise microstructural manipulation strategies outlined here are expected to guide further advancements in high-performance low-temperature OCs for chemical looping processes. 展开更多
关键词 Chemical looping process Partial oxidation of methane Water splitting Low temperature Oxygen carrier activation
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Assessment of carrier transport properties of perovskite CsPbCl3 single crystal with time‑of‑flight alpha‑particle response 认领 引用
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作者 Qi‑Hao Sun Zhou Wu +6 位作者 Shu‑Quan Wei Yu‑Quan Wang Xu‑Chang He Bao Xiao Nan‑Nan Shen Jian‑Fu Zhang Yi‑Hui He 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2026年第8期137-147,共11页
All-inorganic CsPbCl3perovskite is a promising material for high-performance radiation detection owing to its extraordinary photoelectric properties and chemical stability.The critical challenge in developing wide-... All-inorganic CsPbCl3perovskite is a promising material for high-performance radiation detection owing to its extraordinary photoelectric properties and chemical stability.The critical challenge in developing wide-bandgap CsPbCl3perovskite lies in the quantitative assessment of its charge transport properties,which regulate its performance optimization.Herein,we report the first spectroscopic a particles using CsPbCl3detectors with asymmetric contact.CsPbCl3single crystals(ф15 mm×50 mm)were successfully grown using the Bridgman melt method and subsequently fabricated into Schottky-type Bi/CsPbCl3/Au detectors.Owing to its high electrical resistivity of 1.25×109Ω·cm,the CsPbCl3detector demonstrated a low dark current density(~870 nA/cm2)and stable performance.The CsPbCl3detector was also capable of resolving both the α particle(5.5 MeV)and γ-ray(59.5 keV)peaks from the 241 Am radioactive isotope.Furthermore,the carrier transport properties of CsPbCl3were evaluated quantitatively by the time-of-flight technology using 241 Am αparticle response,revealing the hole and electron mobilities as~11.12 and~12.92 cm2·V-1·s-1,respectively.Meanwhile,the hole and election mobility-lifetime products were obtained as~1.72×10-4and~1.04×10-4cm2·V-1,respectively.The planar CsPbCl3detector achieved an excellent energy resolution of~14.9%at 122 keV underγ-ray exposure,which is the highest energy resolution reported to date for CsPbCl3detectors.This study highlights the considerable potential of inorganic perovskite detectors for radiation detection and provides a practical approach for the future development of perovskite materials. 展开更多
关键词 CsPbCl3perovskite Carrier transport Bridgman method Radiation detection Semiconductor detector
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Chitosan/LDH surface-modified polyurethane carriers:enhanced biofilm formation,stability,and nitritation reactor performance 认领 引用
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作者 Shuyun Liu Xuewen Gao +5 位作者 Jiaqi Liu Shoujun Yuan Jingwei Feng Chunhua He Wei Wang Zhen-Hu Hu 《ENGINEERING Environment》 SCIE EI CAS CSCD 2026年第4期1-17,共17页
Ammonia-oxidizing bacteria(AOB)are slow-growing autotrophs prone to washout.Biofilm carriers improve retention;however,conventional types suffer from low roughness,poor hydrophilicity,and unfavorable surface charge,li... Ammonia-oxidizing bacteria(AOB)are slow-growing autotrophs prone to washout.Biofilm carriers improve retention;however,conventional types suffer from low roughness,poor hydrophilicity,and unfavorable surface charge,limiting biofilm formation.In this study,a composite carrier was fabricated by loading chitosan(CS)and layered double hydroxide(LDH)onto a polyurethane(PU)sponge,which introduced hydroxyl(-OH)and amino(-NH2)functional groups as well as Mg2+and Al3+ions onto the surface,increased surface roughness,and enhanced the carrier hydrophilicity by 29.2%.During a 55-d nitritation biofilm cultivation experiment,the carrier modified with 0.8 wt%LDH and 0.8 wt%chitosan exhibited significantly enhanced performance.Compared to the unmodified carrier,the sludge adsorption capacity increased by 80.3%,the biofilm biomass increased by 46.8%,and the biofilm growth rate increased by 198.3%,reaching 333.4±9.5 mg/carrier,2023.2±31.5 mg/carrier,and 103.2 mg/(carrier·d)respectively.In addition,the biofilm stability on the carrier was significantly enhanced,with a 54.1%reduction in sludge detachment under ultrasound treatment compared with the unmodified carrier.The nitritation reactor with the CS/LDH-PU carrier maintained stable nitritation performance under high ammonia loading(1.0 g/(L·d))and a higher sludge concentration(5.5 g/L),while the reactor without the carrier collapsed at a lower sludge concentration(4.6 g/L).These findings suggest that the CS/LDH-PU carrier provides an effective strategy for optimizing conventional nitritation carriers and enhancing the resilience of nitritation systems under high ammonia load conditions. 展开更多
关键词 Ammonia-oxidizing bacteria Biofilm carrier Chitosan(CS) Layered double hydroxides(LDH) Nitritation performance
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Collaborative scheduling problem pertaining to launch and recovery operations for carrier aircraft 认领 引用
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作者 GUO Fang HAN Wei +3 位作者 LIU Yujie SU Xichao LIU Jie LI Changjiu 《Journal of Systems Engineering and Electronics》 SCIE CSCD 2026年第1期287-306,共20页
The proliferation of carrier aircraft and the integration of unmanned aerial vehicles(UAVs)on aircraft carriers present new challenges to the automation of launch and recovery operations.This paper investigates a coll... The proliferation of carrier aircraft and the integration of unmanned aerial vehicles(UAVs)on aircraft carriers present new challenges to the automation of launch and recovery operations.This paper investigates a collaborative scheduling problem inherent to the operational processes of carrier aircraft,where launch and recovery tasks are conducted concurrently on the flight deck.The objective is to minimize the cumulative weighted waiting time in the air for recovering aircraft and the cumulative weighted delay time for launching aircraft.To tackle this challenge,a multiple population self-adaptive differential evolution(MPSADE)algorithm is proposed.This method features a self-adaptive parameter updating mechanism that is contingent upon population diversity,an asynchronous updating scheme,an individual migration operator,and a global crossover mechanism.Additionally,comprehensive experiments are conducted to validate the effectiveness of the proposed model and algorithm.Ultimately,a comparative analysis with existing operation modes confirms the enhanced efficiency of the collaborative operation mode. 展开更多
关键词 carrier aircraft collaborative scheduling problem launch recovery multiple population differential evolution
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Extremely Light Carriers in a Two-Dimensional Fermi Surface of 1,3-DAP Molecule Intercalated WSe2 认领 引用
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作者 Xinyue Li Jun Deng +5 位作者 Boqin Song Jing Chen Yuan Lin Qi Li Qinghua Zhang Jian-gang Guo 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第3期188-204,共17页
Band inversion induced by spin–orbit coupling in topological semimetals typically generates light charge carriers with high Fermi velocities,which are highly desirable for low-dissipation and coherent quantum transpo... Band inversion induced by spin–orbit coupling in topological semimetals typically generates light charge carriers with high Fermi velocities,which are highly desirable for low-dissipation and coherent quantum transport in topological devices.The presence of these carriers in real materials strongly depends on the Fermi-level position.2M-WSe2,with its topological and van der Waals nature,serves as an ideal platform for studying quantum transport in two-dimensional systems,despite the fact that interlayer coupling suppresses the formation of light carriers.In this study,we solvothermally intercalate 1,3-diaminopropane molecules into the interlayer space of 2M-WSe2;these molecules effectively adapt to the electronic structure by eliminating interlayer coupling.Simultaneously,slight electron doping via charge transfer results in a small Fermi pocket with an extremely light effective mass,0.04–0.06 me,as revealed by quantum oscillation measurements.This study demonstrates that molecular intercalation is an effective approach for engineering van der Waals topological materials to achieve specific quantum transport properties. 展开更多
关键词 light charge carriers quantum transport band inversion topological semimetals molecular intercalation fermi surface spin orbit coupling
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A dual-descriptor strategy for the rational design of low-temperature liquid organic hydrogen carriers 认领 引用
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作者 Xiang Gong Renyi Shi Zhao Jiang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第7期69-78,I0004,共10页
Liquid organic hydrogen carriers(LOHCs)are promising for safe and high-density hydrogen storage,yet their practical application is limited by the high temperatures required for dehydrogenation and by an incomplete und... Liquid organic hydrogen carriers(LOHCs)are promising for safe and high-density hydrogen storage,yet their practical application is limited by the high temperatures required for dehydrogenation and by an incomplete understanding of structure-property relationships.Here,a dual-descriptor strategy is presented that combines the density functional theory(DFT)-calculated dehydrogenation reaction enthalpy(ΔrHd)with the pair delocalization index(PDI)as thermodynamic and kinetic descriptors for the rational screening of LOHC candidates.Using this framework,a benzodipyrrole-based BZDP1/10H-BZDP1 pair is identified,delivering a hydrogen capacity of 6.02 wt%and enabling reversible hydrogenationdehydrogenation at temperatures as low as 363 K,clearly outperforming conventional carbazole-based and indole-based systems.Integrated experimental and theoretical analyses indicate that nitrogen incorporation destabilizes saturated intermediates by narrowing the highest occupied molecular orbitallowest unoccupied molecular orbital(HOMO-LUMO)gap and weakening C–H bonds,which lowers the activation barrier in agreement with trends predicted by the dual descriptor predictions.These results confirm the predictive reliability of the thermodynamic-kinetic design concept and offer a general route for developing next-generation low-temperature LOHC systems. 展开更多
关键词 Liquid organic hydrogen carriers N‑heterocyclic compounds Low‑temperature hydrogenation/dehydrogenation Reaction enthalpy change Delocalized electron Activation energy
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Charge carrier distribution enabling superior electrochemical performance for all-solid-state lithium batteries over wide temperature range 认领 引用
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作者 Qiyue Luo Chen Liu +8 位作者 Siwu Li Chaochao Wei Zhongkai Wu Lin Li Ziling Jiang Liping Li Guangshe Li Shijie Cheng Chuang Yu 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第7期676-682,共7页
Argyrodite-based all-solid-state batteries exhibit significant potential as energy storage devices across a wide temperature zone.The Li-ion and electronic conductivities in the cathode mixture is crucial factor in de... Argyrodite-based all-solid-state batteries exhibit significant potential as energy storage devices across a wide temperature zone.The Li-ion and electronic conductivities in the cathode mixture is crucial factor in determining the corresponding electrochemical performances.Here,an effective charge carrier distribution is tailored by introducing Li3InCl6 electrolyte with wider voltage stability surrounding the bare LiNi0.7Co0.2Mn0.1O2 to promote ionic conductivity and mixing carbon additives to enhance electronic conductivity.The Li3InCl6@LiNi0.7Co0.2Mn0.1O2/Li5.5PS4.5Cl1.5/Li-In battery exhibits superior electrochemical performance at various C-rates over a wide operating temperature range due to the enhanced charge carrier conducting rates.It delivers high charge/discharge capacities,superior rate capability and exceptional cycling performance.Specifically,the battery delivers initial discharge capacities of 202 m Ah/g at 0.2 C and retains a discharge capacity of 162 mAh/g at 2 C with a capacity retention of 91.8% over 500 cycles when cycled at room temperature.Moreover,due to the Li3InCl6 coating layer and the carbon additive in the cathode,it exhibits higher discharge capacities and superior cycling performances when operated at-20 and 60℃.This work presents a guideline for fabricating high-performance all-climate solid-state lithium batteries via tailoring the charger carriers conducting pathway in the electrode structure. 展开更多
关键词 Li5.5PS4.5Cl1.5electrolyte Charge carriers Li3InCl6coating Electronic conductivity Electrochemical performances
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AOBiX2(A=La,Tb,Lu;X=S,Se):a family of 2D narrow bandgap semiconductors with high stability,broad-spectrum response,flexibility and high carrier mobility 认领 引用 被引量：1
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作者 Kai Li Yuqi Zhang +1 位作者 Min Zhang Zhifeng Liu 《Journal of Rare Earths》 SCIE EI CAS CSCD 2026年第7期2195-2203,I0007,共9页
In recent years,two-dimensional(2D)materials have attracted significant attention in the field of photodetection due to their unique physical and chemical prope rties.However,the development of new2D semiconductors wi... In recent years,two-dimensional(2D)materials have attracted significant attention in the field of photodetection due to their unique physical and chemical prope rties.However,the development of new2D semiconductors with narrow bandgaps,high carrier mobility,and excellent optical absorption remains a substantial challenge.In this study,via first-principles calculations,a family of 2D semiconductors,AOBiX2(A=La,Tb,Lu;X=S,Se),is predicted to exhibit the desired properties.Specifically,the thermodynamic,dynamic,thermal,and mechanical stabilities of AOBiX2are assessed by analyzing their formation energies,phonon dispersion,ab initio molecular dynamics(AIMD)simulations,and elastic constants,respectively.Furthermore,the adsorption energy calculations demonstrate that AOBiX2retains stability in a humid/oxygen environment.Electronic structure analysis reveals that 2D AOBiX2has ideal narrow bandgaps(ranging from 0.52 to 0.80 eV)and high carrier mobility(up to5137.94 cm2/(V·s)for LaOBiS2).The photoconductivity is also calculated to explain the optoelectronic response characteristics of these materials,further confirming their exceptional performance in optoelectronic devices.Optical properties show that these materials have an extremely broad absorption range,covering the near-infrared(NIR)to visible and ultraviolet(UV)regions,with the optical absorption rate exceeding 26%,indicating excellent optical absorption performance.Additionally,their elastic properties exhibit remarkable flexibility,making them ideal candidates for the design and fabrication of flexible optoelectronic devices.Given that the cleavage energies of AOBiX2are even lower than those of graphene,these materials are promising candidates for experimental fabrication and provide ideal platforms for designing new high-performance photodetectors. 展开更多
关键词 2D narrow-gap semiconductors AOBiX2 First-principles calculations Broad-spectrum response Flexibility High carrier mobility Rare earths
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Mechanism and kinetics study on fixed-bed dehydrogenation of liquid organic hydrogen carriers over Pt-based catalyst 认领 引用
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作者 Rumeng Lan Chao Sun +7 位作者 Jin Yang Kang Xue Xiaolei Guo Zhenfeng Huang Ruijie Gao Xiangwen Zhang Jijun Zou Lun Pan 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2026年第6期196-207,共12页
Liquid organic hydrogen carriers(LOHCs)enable long-distance hydrogen transport,and the continuousflow dehydrogenation kinetic is crucial for the rational design of dehydrogenation system.This work investigates the deh... Liquid organic hydrogen carriers(LOHCs)enable long-distance hydrogen transport,and the continuousflow dehydrogenation kinetic is crucial for the rational design of dehydrogenation system.This work investigates the dehydrogenation reaction pathway,apparent kinetic modeling and impact of products on fixed-bed dehydrogenation of LOHCs over Pt/Al2O3,using perhydro-benzyltoluene(H12-BT)as a model.Experiment results indicate that the initial dehydrogenation of H12-BT predominantly occurs on the mono-substituted side ring(82%),yielding the dehydrogenated intermediate(H6-BT(SR)).The developed kinetic model reveals a zero-order dependence on H12-BT partial pressure,whereas firstorder dependence on H6-BT partial pressure.The activation energy of the first step is slightly higher than that of the second step.Critically,predicted concentration trajectories for all species closely track experimental data points throughout the reaction progress,with a mean relative error of 9.02%.This work elucidates reaction mechanisms and provides essential kinetics for the LOHCs system scale-up. 展开更多
关键词 Dehydrogenation kinetics Reaction mechanism Liquid organic hydrogen carriers Perhydro-benzyltoluene Hydrogen storage
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Kinetic characteristics and redox performance of iron-based oxygen carriers blending with iron-rich sludge ash 认领 引用
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作者 Xiaoying Yuan Xiaoran Wang +1 位作者 Zhihao Zheng Cuiping Wang 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2026年第6期223-231,共9页
To investigate the redox performance and kinetic characteristics of iron-based oxygen carriers when mixed with iron-rich sludge ash during the sludge chemical looping gasification or combustion,the impregnation method... To investigate the redox performance and kinetic characteristics of iron-based oxygen carriers when mixed with iron-rich sludge ash during the sludge chemical looping gasification or combustion,the impregnation method was used to prepare Fe/Al composite oxygen carriers(Fe/Al-OC),and the ironrich sludge ash(IRSA)was produced by high-moisture sludge burning in Muffle stove.The two types powder were then mixed in a 1:1 mass ratio to obtain another OC of Fe1Ash1.Using a thermogravimetric analyzer,the deep redox processes of the three oxygen carriers were carried out,and their reduction under variable temperature or constant temperature and oxidation processes were analyzed using 13 kinetic models to investigate their kinetic parameters.The results showed that the blending of Fe/Al-OC and IRSA exhibited a synergistic effect,in which the actual oxygen release and oxygen gain amount of Fe1Ash1 both exceed the theoretical values,indicating enhanced oxygen transport capacity.During the reduction process,under non-isothermal conditions,the oxygen release in Fe/Al-OC was controlled by two-dimensional diffusion,while the oxygen release in IRSA and Fe1Ash1 followed a first-order reaction model,with Fe1Ash1 having a slightly lower activation energy(34.81 k J·mol-1)than the individual OCs.During isothermal reduction,the reaction of Fe/Al-OC transitions to contraction model control as temperature increases,IRSA maintains first-order reaction characteristics,while Fe1Ash1 reaction is more compatible with the F3/2 model,with synergistic effects weakening.During the oxidation process,Fe/Al-OC follows a first-order reaction model,while IRSA and Fe1Ash1both follow two-dimensional diffusion models,but the activation energy of Fe1Ash1(34.60 k J·mol-1)is significantly lower than that of the other two,resulting in superior oxidation performance.Thus the Fe/Al OC might achieve complementary performance and kinetic characteristics in redox with more sludge ash blending.The highest ash blending proportion that can promote oxygen carrying capacity would be studied in next works. 展开更多
关键词 Kinetics Iron-based oxygen carrier Iron-rich sludge ash Reduction Blend
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Chemical-looping methane hydrogen production performance of Cu,La,Ce modified Fe2O3/Al2O3oxygen carrier 认领 引用
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作者 YANG Liangnuo LI Yilong +6 位作者 ZHOU Zheng DENG Chunhuan MA Hao DING Zisheng LI Guoliang LI Ming GU Zhenhua 《燃料化学学报（中英文）》 EI CAS CSCD 北大核心 2026年第4期82-95,共14页
Chemical looping methane steam reforming(CL-MSR)has garnered significant attention owing to its ability to sequentially produce syngas with high selectivity and high-purity hydrogen through redox cycling.To overcome t... Chemical looping methane steam reforming(CL-MSR)has garnered significant attention owing to its ability to sequentially produce syngas with high selectivity and high-purity hydrogen through redox cycling.To overcome the limitations of single ironbased oxygen carriers,including poor cycling stability,low reactivity and susceptibility to sintering,this study employed a dipcoating method to modify Fe2O3/Al2O3oxygen carriers by incorporating three distinct metal additives:Cu,La and Ce.The composite oxygen carriers were systematically characterized and evaluated under redox conditions to investigate the structure-activity relationships between the physicochemical properties,reactivity,and hydrogen production performance.Results revealed that the spinel-phase CuFe2O4exhibited higher reactivity than the perovskite-phase LaFeO3and CeO2,promoting the deeper reduction of Fe2O3.Fe58Cu2Al exhibited an oxygen storage capacity as high as 6.5 mmol/g.During the CH4 reaction stage,Fe58Cu2Al achieved the highest oxygen loss of 12.1 g/100 g oxygen carrier,accompanied by a syngas yield of 5.15 mmol/g-1.33 times and 1.59 times greater than that of Fe60Al.In the hydrogen production stage,the 2%Cu-modified oxygen carrier demonstrated optimal performance,yielding 5.13 mmol/g of hydrogen,which was 1.51 times that of the pristine sample.Even after ten cycles,the H2yield remained at 3.61 mmol/g,surpassing the single-cycle output of the pristine sample and the H2 purity consistently exceeded 98%. 展开更多
关键词 chemical looping iron-based oxygen carrier metal promoter hydrogen purity
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Rational Modulation of Pt d Electrons to Significantly Enhance the Catalytic Dehydrogenation Performance of Liquid Organic Hydrogen Carriers 认领 引用
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作者 Chao Sun Tianzuo Wang +6 位作者 Ruijie Gao Xiaoyang Liu Kang Xue Chengxiang Shi Xiangwen Zhang Lun Pan Ji-Jun Zou 《Engineering》 SCIE EI CSCD 2026年第2期217-226,共10页
Understanding the intrinsic features of dehydrogenation reactions of liquid organic hydrogen carriers(LOHCs)is a formidable challenge due to the combined impact of electronic and geometric effects.Herein,we constructe... Understanding the intrinsic features of dehydrogenation reactions of liquid organic hydrogen carriers(LOHCs)is a formidable challenge due to the combined impact of electronic and geometric effects.Herein,we constructed a series of Pt/MOx catalysts(CeO2,MgO,ZrO2,TiO2,Al2O3,or SiO2)with similar sizes of Pt(~1.7 nm)to investigate the effects of Pt electron structures(tuned by electronic metal–support interactions)on the catalytic dehydrogenation of LOHCs.The results revealed a volcano-shaped correlation between Pt d electrons on different supports and the turnover frequency of catalytic dehydrogenation.Importantly,the Pt/MgO catalyst exhibited the highest dehydrogenation activity.With decreasing d electron content,Pt/MgO increases the bonding orbital dominance of Pt–C bonds and leads to stable adsorption of H6-monobenzyltoluene(MBT),which facilitates subsequent C–H bond scission.This study offers insight for the strategic development of high-efficiency dehydrogenation catalysts via d electron density modulation of Pt sites. 展开更多
关键词 Pt nanoparticles Liquid organic hydrogen carriers Dehydrogenation reaction d electron
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Dehydrogenation-induced polarity flipping of charge carriers and conductance enhancement in nitrogen-containing heterocyclic molecule-anchored single-molecule junctions 认领 引用
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作者 Qi Zhou Ruimei Liu +2 位作者 Guang-Ping Zhang Chuan-Kui Wang Minglang Wang 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第7期748-755,共8页
Achieving high conductance and dual charge carriers in molecular junctions is essential for developing logical building blocks in molecular electronics.In this study,we investigated the electrical transport properties... Achieving high conductance and dual charge carriers in molecular junctions is essential for developing logical building blocks in molecular electronics.In this study,we investigated the electrical transport properties of nitrogen-containing heterocyclic molecule(N3C)-anchored single-molecule junctions using the nonequilibrium Green's function based on density functional theory.Our findings reveal that dehydrogenation is an effective strategy for achieving two charge-carrier polarities and improving conductance.In particular,dehydrogenation changed the N3C anchor from an electron-rich to an electron-deficient state,reversing the direction of charge transfer and that of the associated interfacial dipole.Consequently,electrons were replaced by holes as the primary charge carriers.Additionally,the number of removed hydrogen atoms critically governs the charge-transport behavior of molecular junctions.When the anchor groups were connected by conjugated molecular bridges,p-type and n-type molecular junctions were produced by removing three and four hydrogen atoms,respectively,significantly increasing junction conductance in both cases.These findings demonstrate that nitrogencontaining heterocyclic molecules are promising anchor groups for achieving two charge-carrier polarities and enhancing conductance through dehydrogenation. 展开更多
关键词 molecular electronics single-molecule devices charge carrier polarity dehydrogenation
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Correction: Optimizing Exciton and Charge-Carrier Behavior in Thick-Film Organic Photovoltaics: A Comprehensive Review 认领 引用
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作者 Lu Wei Yaxin Yang +2 位作者 Lingling Zhan Shouchun Yin Hongzheng Chen 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第1期608-608,共1页
Correction to:Nano-Micro Letters(2026)18:10.http://gffzzd3cc09b8251d45dfskkn60fo5ov9066no.ffgz.tsg.suse.edu.cn/10.1007/s40820-025-01852-8 Following publication of the original article[1],the authors reported that the last author’s name was inadvertently misspelled.Th... Correction to:Nano-Micro Letters(2026)18:10.http://gffzzd3cc09b8251d45dfskkn60fo5ov9066no.ffgz.tsg.suse.edu.cn/10.1007/s40820-025-01852-8 Following publication of the original article[1],the authors reported that the last author’s name was inadvertently misspelled.The published version showed“Hongzhen Chen”,whereas the correct spelling should be“Hongzheng Chen”.The correct author name has been provided in this Correction,and the original article[1]has been corrected. 展开更多
关键词 charge carrier behavior exciton behavior comprehensive review thick film organic photovoltaics nano micro letters
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Enhancing chemical looping oxygen uncoupling capacity of Ca-Mn based perovskite oxygen carrier materials by co-doping Co/Mg 认领 引用
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作者 LI Ke-xin LIU Lei +5 位作者 WANG Yang LI Zuo-an LARRING Yngve LI Zhen-shan RAO Zheng-hua SUN Zhi-qiang 《Journal of Central South University》 SCIE EI CAS CSCD 2026年第3期1129-1144,共16页
Ca-Mn based perovskites are particularly suitable for large-scale chemical looping applications due to their low cost and tunable performance characteristics in chemical looping with oxygen uncoupling(CLOU).However,th... Ca-Mn based perovskites are particularly suitable for large-scale chemical looping applications due to their low cost and tunable performance characteristics in chemical looping with oxygen uncoupling(CLOU).However,these materials still struggle to simultaneously achieve long-term stability and efficient oxygen uncoupling performance.Herein,an innovative Co/Mg co-doping strategy was proposed.The optimization threshold for the single Co doped system could achieve 110%enhancement in oxygen uncoupling performance compared to undoped CaMnO3,but exhibiting irreversible phase separation and severe sintering above 800℃.The Co/Mg co-doped system was further developed to significantly improve high-temperature cycling stability,maintaining the superior oxygen uncoupling performance.It was found that Mg doping substantially enhanced the activity of the primary redox pairs(Mn4+/Mn3+,Co3+/Co2+),demonstrating the stable oxygen uncoupling capacity of 1.67 wt%−2.12 wt%at 900℃.The developed Ca Mn based perovskite oxygen carrier achieves an optimal balance between efficient oxygen uncoupling capacity and high temperature structural stability,providing a novel material for enhanced fuel conversion for CLOU application. 展开更多
关键词 chemical looping with oxygen uncoupling oxygen carrier Ca-Mn based perovskite co-doping Co/Mg
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High-Throughput Mapping of the Superconducting Phase Diagram Combining Composition-Spread FeSe1-xTexFilm with Carrier Doping 认领 引用
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作者 Xuewei Wang Changhong Yuan +11 位作者 Tianxiang Liu Qiuyan Shi Yating Jiang Zhiyu Huang Yutong Wang Yuhan Jin Xingyu Jiang Beiyi Zhu Jie Yuan Zefeng Lin Qihong Chen Kui Jin 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第5期174-181,共8页
A high-throughput method is developed to investigate the superconducting phase diagram of combinatorial(composition-spread)FeSe1-xTex(0≤x≤1)films under electron doping.Composition-spread FeSe1-xTexfilms ... A high-throughput method is developed to investigate the superconducting phase diagram of combinatorial(composition-spread)FeSe1-xTex(0≤x≤1)films under electron doping.Composition-spread FeSe1-xTexfilms are fabricated on single CaF2substrates using combinatorial laser molecular beam epitaxy.An integrated device structure combining ionic-liquid gating with FeSe1-xTex films enables simultaneous transport measurements over the whole composition range.Electrochemical gating significantly enhances the superconducting transition temperature(Tc)in the Se-rich region,reaching values above 40 K.With increasing Te content,both the maximum Tc and the gating efficiency gradually decrease.A comprehensive two-dimensional superconducting phase diagram is constructed as a function of Te content and doping level.These results establish an ideal approach for rapidly exploring the correlation between chemical composition,carrier doping,and superconductivity in Fe-based superconductors. 展开更多
关键词 ionic liquid gating composition spread fese x te x films electron dopingcomposition spread superconducting phase diagram high throughput mapping combinatorial laser molecular beam epitaxyan carrier doping transport measurements
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