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Three-Dimensional Phase-Field Simulation of Grain Evolution in Physical Vapor Deposited Pure Ti Thin Film 认领 引用
1
作者 Zhang Tongdi Ma Sa +2 位作者 Zhong Jing Yang Shenglan Zhang Lijun 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2026年第5期1137-1145,共9页
Combining the phase-field method and the moving boundary method,a three-dimensional phase-field simulation was conducted for the growth and grain evolution of Ti films deposited by physical vapor deposition under diff... Combining the phase-field method and the moving boundary method,a three-dimensional phase-field simulation was conducted for the growth and grain evolution of Ti films deposited by physical vapor deposition under different deposition rates and grain orientations.The evolution of grain morphology and grain orientation was also taken into consideration.Simulation results show that at lower deposition rates,the surface of the formed Ti film exhibits a distinct oriented texture structure.The surface roughness of the Ti film is positively correlated with the grain misorientation.Moreover,the surface roughness obtained from the simulation is in good agreement with the experiment results. 展开更多
关键词 physical vapor deposition phase-field simulation grain evolution polycrystalline Ti thin film
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Tuning hard carbon pore structure via water vapor activation for enhanced sodium-ion storage 认领 引用
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作者 Zuqin Duan Wang Zhou +4 位作者 Ying Mo Rui Tang Yan Duan Aiping Hu Jilei Liu 《Green Energy & Environment》 SCIE EI CAS CSCD 2026年第4期1096-1107,共12页
The precise construction of closed pores in carbon anodes is crucial for boosting the low-voltage plateau capacity of sodium-ion batteries(SIBs).Traditional closed-pore fabrication methods often face environmental and... The precise construction of closed pores in carbon anodes is crucial for boosting the low-voltage plateau capacity of sodium-ion batteries(SIBs).Traditional closed-pore fabrication methods often face environmental and economic challenges.To address these limitations,this study proposes an innovative synergistic strategy combining water vapor activation with high-temperature repair.By precisely controlling the steam dosage during the 800℃ pre-carbonization stage,a tunable open pore network was constructed in the material,followed by efficient transformation of these open pores into ultra-micropores and closed pores through 1350℃ high-temperature treatment.The study reveals that the volume and size of open pores during pre-carbonization directly determine the final pore structure characteristics.Excessively large and abundant open pores hinder the transformation of the pore architecture during high-temperature treatment.The optimized PRHC2 anode demonstrates outstanding electrochemical performance,delivering a reversible capacity of 377.6 mAh g-1at 30 mA g-1,including 284.1 mAh g-1contribution from the plateau region.This research not only addresses the constraints of conventional methods but also provides critical technical support for developing next-generation carbon anode materials. 展开更多
关键词 Hard carbon Sodium-ion batteries Water vapor Closed pores
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Dual-layer Design of TaC Coatings on Graphite by Laser Chemical Vapor Deposition for Improving the Thermal Shock Resistance 认领 引用
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作者 SHEN Yeqin ZHANG Song +6 位作者 HUANG Wei ZHANG Chitengfei WANG Chongjie GUO Han LI Cuicui YANG Meijun TU Rong 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2026年第4期938-942,共5页
A dual-layer TaC coating including porous TaC(p-TaC)inner layer and dense TaC(d-TaC)outer layer was in-situ fabricated by laser chemical vapor deposition(LCVD)for improving the thermal shock resistance.The p-TaC inner... A dual-layer TaC coating including porous TaC(p-TaC)inner layer and dense TaC(d-TaC)outer layer was in-situ fabricated by laser chemical vapor deposition(LCVD)for improving the thermal shock resistance.The p-TaC inner layer exhibits a(111)preferred orientation and characterizes a network of trunks and branches attributed to the“shadow effect”,while the d-TaC outer layer displays a random orientation with a columnar crystal structure.This dual-layer design effectively mitigates CTE mismatch and alleviates thermal stress.Consequently,the coated graphite can withstand more than 10 cycles of thermal shock test from room temperature(RT)to 1400℃with no stress cracking.This work provides a novel strategy for fabricating functional coatings on graphite with excellent thermal shock resistance. 展开更多
关键词 laser chemical vapor deposition(LCVD) TaC coatings thermal shock resistance microstructure carbon materials
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Controllable synthesis of magnetic CoO nanosheets by chemical vapor deposition 认领 引用
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作者 Zidan Peng Zengfu Li +7 位作者 Junkun Zhou Liang Li Bowen Yao Jinchen Zan Yechen Wang Hongmei Zhang Gang Peng Guang Wang 《Journal of Semiconductors》 EI CAS CSCD 2026年第6期147-154,共8页
Two-dimensional(2D)magnetic materials have attracted significant attention owing to their tunable magnetic properties and prospective applications in next-generation spintronic devices.However,their practical utilizat... Two-dimensional(2D)magnetic materials have attracted significant attention owing to their tunable magnetic properties and prospective applications in next-generation spintronic devices.However,their practical utilization is often limited by poor air stability.2D magnetic metal oxides,which generally exhibit better stability under ambient conditions,represent a promising alternative.In this work,high-quality CoO nanosheets were successfully synthesized via chemical vapor deposition.Structural characterization confirms a well-defined triangular morphology and single-crystalline nature,with the thinnest nanosheets reaching approximately 10.1 nm in thickness.Magnetic measurements reveal significant magnetic anisotropy with an in-plane easy magnetization axis and a transition temperature of approximately 159 K.Our study provides a feasible approach for the controllable synthesis of air-stable 2D magnetic semiconductors,thereby laying a foundation for their potential application in low-power spintronic devices. 展开更多
关键词 2D magnetic semiconductors CoO nanosheets chemical vapor deposition(CVD) magnetic anisotropy
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Effect of water vapor on the structure and stability of self-organized patterns in atmospheric-pressure pulsed radio-frequency dielectric barrier discharges 认领 引用
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作者 Man-Qiang Du Wen-Fu Wei +3 位作者 Zhen-Feng Ding Liang-Wen Qi Xiao-Dong Wen Bin Sun 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第3期379-386,共8页
The effect of water vapor on the self-organized pattern characteristics of atmospheric-pressure radio-frequency argon dielectric barrier discharges was experimentally investigated.Under high relative humidity(RH)condi... The effect of water vapor on the self-organized pattern characteristics of atmospheric-pressure radio-frequency argon dielectric barrier discharges was experimentally investigated.Under high relative humidity(RH)conditions,no side discharges were generated between the two surface discharges of the patterns.As the RH gradually decreases,side discharges begin to emerge and evolve through three distinct modes:uniform glow discharge,non-uniform glow discharge,and filamentary discharge.These structural variations are primarily attributed to changes in breakdown(or maintenance)voltage induced by varying RH.At lower RH levels,the strongest single pattern exhibited spontaneous motion,which in turn triggered the collective motion of patterns.The self-organized pattern motion is explained as the shift of re-ignition position induced by electric interaction between asymmetrical side discharge filaments and the central filament. 展开更多
关键词 atmospheric-pressure pulsed radio-frequency(RF)discharges dielectric barrier discharges selforganized pattern water vapor
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Urodynamic de-obstruction and symptom improvement after thulium laser vaporization(ThuVAP):evidence from a prospective paired study 认领 引用
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作者 Simone Tammaro Francesco Di Fiore +11 位作者 Felice Crocetto Celeste Manfredi Claudia Colla Ruvolo Gianluigi Califano Biagio Barone Davide Arcaniolo Lorenzo Spirito Francesco Paolo Calace Pasquale Reccia Ferdinando Fusco Marco De Sio Raffaele Balsamo 《The Canadian Journal of Urology》 SCIE 2026年第2期249-259,共11页
Background:Thulium laser vaporization of the prostate(ThuVAP)is an established treatment for benign prostatic obstruction,but its impact on urodynamic parameters remains poorly defined.This study aimed to quantify the... Background:Thulium laser vaporization of the prostate(ThuVAP)is an established treatment for benign prostatic obstruction,but its impact on urodynamic parameters remains poorly defined.This study aimed to quantify the de-obstructive efficacy of ThuVAP through pre-and postoperative urodynamic comparisons and to assess the relationship between urodynamic improvement and symptom relief.Methods:In a prospective single-center cohort(June 2022–June 2024),men with urodynamically confirmed obstruction underwent standardized ThuVAP with a 200-W thulium:YAG system.Baseline and 6-month invasive urodynamics and 12-month clinical follow-up were performed.The primary endpoint was the change in the bladder outlet obstruction index(BOOI);secondary endpoints included Qmax,postvoid residual volume(PVR),bladder voiding efficiency(BVE),detrusor pressures,and International Prostate Symptom Score(IPSS).Results:Sixty-four patients(mean age 67 years;prostate volume 52 mL)were analyzed.BOOI decreased from 55.9±17.2 to 21.3±11.2(p<0.001),with obstructed cases dropping from 79.7%to 7.8%.Schaer grade fell from 3.6 to 0.3(p<0.001).Detrusor pressure halved,Qmax rose from 7.9 to 20.8 mL/s,PVR declined from 121 to 22 mL,and BVE improved from 64%to 94%(all p<0.001).Low compliance and involuntary detrusor contractions(IDC)decreased notably.IPSS improved from 26.2 to 3.4(p<0.001)and correlated with the magnitude of urodynamic de-obstruction.Conclusions:ThuVAP provides substantial,objectively verified relief of bladder outlet obstruction with consistent improvements in voiding efficiency and symptoms.The correlation between urodynamic and clinical outcomes underscores the procedure’s efficacy and the utility of urodynamics in documenting therapeutic benefit. 展开更多
关键词 benign prostatic hyperplasia bladder outlet obstruction thulium laser urodynamic vaporization
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8-inch free-standing GaN substrates grown by hydride vapor phase epitaxy 认领 引用
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作者 Ruihua Zhang Fang Liu +12 位作者 Yao Wu Hongfen Xu Jinmi He Ming Liu Jianhui Wang Kunyang Li Ping Wang Jiejun Wu Tongjun Yu Qi Wang Jingquan Lu Guoyi Zhang Xinqiang Wang 《Journal of Semiconductors》 EI CAS CSCD 2026年第2期80-86,共7页
The absence of large-size gallium nitride(GaN) substrates with low dislocation density remains a primary bottleneck for advancing GaN-based devices. Here, we demonstrate the achievement of 8-inch freestanding GaN subs... The absence of large-size gallium nitride(GaN) substrates with low dislocation density remains a primary bottleneck for advancing GaN-based devices. Here, we demonstrate the achievement of 8-inch freestanding GaN substrates grown by hydride vapor phase epitaxy. Critical to this achievement is the improvement in gas-flow uniformity, which ensures exceptional thickness homogeneity and enables the crack-free growth of GaN. After laser lift-off(LLO) separation, the freestanding GaN substrate exhibits superior crystal quality, evidenced by full width at half maximum values of 68 and 54 arcsec for X-ray diffraction rocking curves of(002) and(102) planes, alongside a low dislocation density of 1.6 × 106 cm-2. This approach establishes a robust pathway for the production of large-size GaN substrates, which are essential for advancing next-generation power electronics and high-efficiency photonics. 展开更多
关键词 gallium nitride single-crystal substrates large size hydride vapor phase epitaxy
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High-latitude mesospheric water vapor trends evaluated with a new method from SABER data 认领 引用
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作者 Xi Kang ChengYun Yang Tao Li 《Earth and Planetary Physics》 EI CSCD 2026年第2期259-268,共10页
In this study,we use observations from the Sounding of the Atmosphere using Broadband Emission Radiometry(SABER)instrument onboard the Thermosphere–Ionosphere–Mesosphere Energetics and Dynamics(TIMED)satellite to de... In this study,we use observations from the Sounding of the Atmosphere using Broadband Emission Radiometry(SABER)instrument onboard the Thermosphere–Ionosphere–Mesosphere Energetics and Dynamics(TIMED)satellite to develop and apply a new local-time binning method to investigate the long-term evolution of mesospheric water vapor at high latitudes.The proposed method accounts for the gradual local-time drift of the SABER orbit by aligning seasonal observation windows and selecting samples observed at similar local times.This approach minimizes tidal aliasing and ensures more consistent sampling,yielding more reliable estimates of long-term water vapor trends at high latitudes.The results show that drying signals primarily appear in the polar regions.However,in the southern hemisphere,a drying trend is observed only in autumn,whereas winter and summer mainly show moistening trends.In contrast,the northern hemisphere exhibits drying signals in the polar regions during all seasons,showing a clear seasonal asymmetry.Additionally,the water vapor trend in the northern hemisphere is particularly pronounced in February(late winter),with moistening reaching up to+2.0 ppmv.The winter in the southern hemisphere(July–August)also shows moistening,but the trend is still weaker than in the northern hemisphere.These differences highlight the strong moistening trend in the northern hemisphere during winter and underscore the significant asymmetry in seasonal water vapor changes between the two hemispheres.These findings emphasize the limitations of water vapor trend estimates across different seasons and latitudes.Moreover,they provide new insights into the spatiotemporal variability associated with tidal structures,underscoring the importance of optimizing local-time sampling strategies for reliable long-term trend detection. 展开更多
关键词 mesospheric water vapor high-latitude region SABER/TIMED observations long-term trend local-time sampling bias
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Critical exponents near the Liouvillian exceptional structure in Rydberg vapors 认领 引用
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作者 Chuanming Li Konghao Sun Wei Yi 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第3期214-219,共6页
In a dissipative Rydberg vapor,the interplay of many-body effects and non-Hermiticity gives rise to a Liouvillian exceptional structure,where exceptional arcs merge at a higher-order exceptional point of the Liouvilli... In a dissipative Rydberg vapor,the interplay of many-body effects and non-Hermiticity gives rise to a Liouvillian exceptional structure,where exceptional arcs merge at a higher-order exceptional point of the Liouvillian superoperator.Spectral features of the exceptional structure naturally give rise to critical dynamics,which have interesting implications for experiments.In this work,we study the response of the system to perturbations near the Liouvillian exceptional structure,and evaluate the critical exponents.The results are consistent with those in linear non-Hermitian Hamiltonians,thus confirming the exceptional nature of the structures herein.We also discuss how these exponents can be measured experimentally. 展开更多
关键词 Rydberg vapors open system Liouvillian exceptional point critical scaling
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Numerical Study of the Vaporization and Combustion of Single p-Xylene Droplets in Hot Air 认领 引用
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作者 Sachin Tom Eva Gutheil 《Computer Modeling in Engineering & Sciences》 SCIE EI 2026年第7期353-371,共19页
A single droplet heating,vaporization,and detailed combustion model is developed for pure p-xylene(p-C₈H₁₀)in hot air.p-C₈H₁₀is a combustible solvent in precursor solutions,for instance,with titanium tetraisopropoxide... A single droplet heating,vaporization,and detailed combustion model is developed for pure p-xylene(p-C₈H₁₀)in hot air.p-C₈H₁₀is a combustible solvent in precursor solutions,for instance,with titanium tetraisopropoxide(TTIP)for the production of TiO₂nanoparticles.In the present one-dimensional mathematical model,a spherically symmetric p-xylene droplet in hot air is considered,resolving both the droplet(liquid phase)and the ambience(gas phase).The calculation of the vaporization rate includes the Stefan velocity at the droplet surface.In the gas phase,a detailed chemical reaction scheme is used.Elementary reactions are combined with complex reactions that account for the thermal decomposition of the p-xylene.The reaction mechanism comprises 93 chemical reactions among 25 species.Variable thermo-physical properties are used for both the gas and the liquid phase.A parameter study is conducted by varying the hot ambient gas temperature and the initial droplet size.In a hot ambience,initial expansion of the p-xylene droplet occurs due to droplet heating.After initial heating and vaporization,autoignition and combustion in the gas phase take place.In contrast to similar studies of single droplet combustion in the literature,the present simulations are not only carried to the end of the droplet lifetimes but continued until the gas flame extinguishes due to lack of combustible fuel.The vaporization rate constant,the autoignition,and the flame standoff distance are analyzed. 展开更多
关键词 Single droplet vaporization p-xylene droplet autoignition combustion detailed chemical reactions
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Encapsulation of Ultrasmall WO3 Nanoclusters in PCN-250 for Efficient CO2Photoreduction to CO with Water Vapor 认领 引用
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作者 Yang Miaomiao Ren Jing +4 位作者 Wang Ye Dong Wenwen Zhao Jun Li Dongsheng Zhang Zhiming 《化学学报》 SCIE CAS CSCD 北大核心 2026年第5期643-650,共8页
Renewable light-driven photocatalytic CO2reduction(CO2RR)has emerged as a promising strategy to mitigate greenhouse gas emissions while producing value-added chemicals and fuels.However,the efficiency of solar-d... Renewable light-driven photocatalytic CO2reduction(CO2RR)has emerged as a promising strategy to mitigate greenhouse gas emissions while producing value-added chemicals and fuels.However,the efficiency of solar-driven photocatalytic systems remains limited by rapid recombination of photogenerated charge carriers,which represents a critical bottleneck for technological progress.Herein,ultrasmall WO3 nanoclusters were successfully immobilized within the microporous framework of PCN-250 via a molecular cavity confinement strategy.Unlike pristine PCN-250,which primarily relies on monocomponent Fe3+active sites,the immobilization of WO3 nanoclusters enables the construction of a Z-scheme heterojunction.This unique architecture not only promotes efficient charge separation but also preserves the strong redox potentials of both components,thereby significantly enhancing the photocatalytic CO2reduction performance.High-angle annular dark field scanning transmission electron microscopy(HAADF-STEM)analysis confirms the effective confinement and encapsulation of WO3 nanoclusters within the PCN-250,where WO3 species self-assemble into ultrathin nanoclusters with diameters ranging from 0.8 to 1.4 nm.UV-Vis spectroscopy reveals that this nanoscale encapsulation markedly broadens the optical absorption,extending the absorption edge to 800 nm and thus spanning the entire visible light region.Using H2O vapor as a proton source,the optimized WO3@PCN-250-2(W@P-2)composite exhibits a CO2photoreduction rate of 516.07μmol·g-1,which is 9.1 times higher than that of pristine WO3.Mechanistic studies indicate a Z-scheme charge transfer pathway at the WO3/PCN-250 interface.In-situ FTIR spectroscopy identifies*COOH as the key intermediate during CO2reduction to CO.This work offers a valuable reference for designing Z-scheme heterojunctions toward efficient CO2photoreduction. 展开更多
关键词 ultrathin WO3nanocluster PCN-250 Z-scheme heterojunction CO2photoreduction water vapor
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Smoothed Particle Hydrodynamics(SPH)Simulations of Drop Evaporation:A Comprehensive Overview of Methods and Applications 认领 引用
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作者 Leonardo Di G.Sigalotti Carlos A.Vargas 《Computer Modeling in Engineering & Sciences》 SCIE EI 2025年第3期2281-2337,共57页
The evaporation ofmicrometer and millimeter liquid drops,involving a liquid-to-vapor phase transition accompanied by mass and energy transfer through the liquid-vapor interface,is encountered in many natural and indus... The evaporation ofmicrometer and millimeter liquid drops,involving a liquid-to-vapor phase transition accompanied by mass and energy transfer through the liquid-vapor interface,is encountered in many natural and industrial processes as well as in numerous engineering applications.Therefore,understanding and predicting the dynamics of evaporating flows have become of primary importance.Recent efforts have been addressed using the method of Smoothed Particle Hydrodynamics(SPH),which has proven to be very efficient in correctly handling the intrinsic complexity introduced by the multiscale nature of the evaporation process.This paper aims to provide an overview of published work on SPH-based simulations related to the evaporation of drops suspended in static and convective environments and impacting on heated solid surfaces.After a brief theoretical account of the main ingredients necessary for the modeling of drop evaporation,the fundamental aspects of SPH are revisited along with the various existing formulations that have been implemented to address the challenges imposed by the physics of evaporating flows.In the following sections,the paper summarizes the results of SPH-based simulations of drop evaporation and ends with a few comments on the limitations of the current state-of-the-art SPHsimulations and future lines of research. 展开更多
关键词 Drop evaporation surface tension heat and mass transfer phase separation smoothed particle hydrodynamics(SPH) boiling evaporation explosive vaporization droplet/wall interaction
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Corrigendum to“Hybrid Flame‐Assisted Plasma‐Enhanced Chemical Vapor Deposition Strategy for Scalable and Structurally Tunable ZrO2Thin Films” 认领 引用
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《Rare Metals》 SCIE EI CAS CSCD 2026年第6期821-821,共1页
N.Manafikhi,S.Mirjalali,Z.Lin,S.Cheng,N.Nasiri.Rare Metals,2026;45:e70239.In the Abstract,the particle size was incorrectly reported as 120±0.1 nm and should have been 120±34 nm in the sentence:“Under optim... N.Manafikhi,S.Mirjalali,Z.Lin,S.Cheng,N.Nasiri.Rare Metals,2026;45:e70239.In the Abstract,the particle size was incorrectly reported as 120±0.1 nm and should have been 120±34 nm in the sentence:“Under optimized conditions,we obtained a uniform nanostructured ZrO2film with particle sizes of 120±34 nm and up to 89%transmittance.” 展开更多
关键词 chemical vapor deposition structural tunability hybrid flame assisted plasma particle size transmittance ZrO thin films
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Macroscopic seepage and microstructural behavior of oil shale using water vapor injection during mining 认领 引用 被引量：2
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作者 Lei Wang Ziqi Wang +4 位作者 Yangsheng Zhao Runxu Zhang Dong Yang Zhiqin Kang Jing Zhao 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2025年第3期1489-1509,共21页
In the context of convection-heating-based in situ oil shale retorting,fractures serve as primary pathways for fluid migration and product extraction.This study investigates the permeability and microstructural evolut... In the context of convection-heating-based in situ oil shale retorting,fractures serve as primary pathways for fluid migration and product extraction.This study investigates the permeability and microstructural evolution of oil shale during water vapor injection in single-fracture and no-fracture scenarios.Three types of oil shale are investigated:intact oil shale,oil shale with a single straight crack,and oil shale with a single hydraulic crack.With increasing water vapor temperature,the permeabilities of the intact oil shale and oil shale with a fractured crack exhibit a trend of initial increase,followed by a decrease,and then a subsequent increase.However,the permeability of oil shale with a single straight crack consistently increases and exceeds that of oil shale with a fractured crack.The temperaturedependent permeability changes in fractured oil shale-a slight decrease in fracture cracks and a gradual increase in straight cracks-mainly occur in the range of 300℃-350℃.The permeability of oil shale with a straight crack is approximately three times that of oil shale with a fractured crack.This is attributed to the retention of viscous asphaltene and the frictional resistance caused by the rough fracture structure.For the oil shale with a single crack,the crack permeability has a dominant influence on the overall permeability of the rock.The contribution of the permeability of the straight crack exceeds 94.6%,while that of the permeability of the fractured crack is greater than 86.1%.The disparity in the contribution of these two crack structures is evident at 350℃-550℃. 展开更多
关键词 Water vapor Fractured oil shale Seepage Microstructure Physical modification
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Innovative dual-mode device integrating capacitive desalination and solar vapor generation for high-efficiency seawater desalination 认领 引用 被引量：2
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作者 Jiacheng Wang Zhaoyu Chen +6 位作者 Ruduan Yuan Jiaxin Luo Ben Zhang Keju Ji Meng Li Juanxiu Xiao Kuan Sun 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2025年第1期171-179,共9页
Solar-driven interface evaporation with high solar-to-steam conversion efficiency has shown great potential in seawater desalination.However,due to the influence of latent heat and condensation efficiency,the water yi... Solar-driven interface evaporation with high solar-to-steam conversion efficiency has shown great potential in seawater desalination.However,due to the influence of latent heat and condensation efficiency,the water yield from solar-driven interface evaporation remains insufficient,posing a significant challenge that requires resolution.In this work,we designed a dual-mode high-flux seawater desalination device that combines solar-driven interface evaporation and capacitive desalination.By utilizing coupled desalination materials exhibiting both photothermal conversion and capacitance activity,the device demonstrated photothermal evaporation rates of 1.41 and 0.97 kg m-2h-1for condensate water yield under one-sun irradiation.Additionally,the device exhibited a salt adsorption capacity of up to48 mg g-1and a salt adsorption rate of 2.1 mg g-1min-1.In addition,the salt adsorption capacity increased by approximately 32%under one-sun irradiation.Furthermore,photo-enhanced capacitive desalination performance was explored through numerical simulations and theoretical calculations.Theoretical calculations and characterizations confirmed that the defect energy levels formed by the introduction of sulfur vacancies can effectively widen the light absorption range,improve photothermal conversion performance,and stimulate more photoelectrons to participate in capacitive desalination.Concurrently,the electron distribution state of molybdenum disulfide with sulfur vacancies and surface defect sites contributes to ion/electron transport at the solid-liquid interface.This work provides a novel pathway for integrating solar vapor generation with other low-energy desalination technologies. 展开更多
关键词 Capacitive deionization Solar vapor generation Molybdenum disulfide Defect engineering
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Clean and tunable fabrication of ternary graphene-cobalt based promoter by chemical vapor deposition for lithium-sulfur batteries 认领 引用 被引量：2
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作者 Hua Gao Yunfeng Zhang +6 位作者 Chaoxu Hao Bo Zhao Menglei Wang Haina Ci Lixian Song Zhongyuan Lu Yingze Song 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2025年第8期194-202,共9页
Graphene-metal based materials have been utilized in lithium-sulfur(Li–S)batteries owing to their integrated functionalities thus far.However,their synthesis has predominantly relied on wet-chemistry routes,which lim... Graphene-metal based materials have been utilized in lithium-sulfur(Li–S)batteries owing to their integrated functionalities thus far.However,their synthesis has predominantly relied on wet-chemistry routes,which limited their practical activity in Li–S reaction systems.In this study,we introduce a chemical vapor deposition(CVD)-triggered dry-chemistry approach for the preparation of graphene-cobalt(Co)based catalysts.The versatile CVD technique provides a dry and controllable reaction environment,effectively pledging the compact and clean catalytic interfaces between graphene and Co-based components.Additionally,programmed reactions introduce defects such as vacancies and nitrogen heteroatoms into the catalysts.Notably,the graphene layer number and Co valence state can be delicately manipulated by altering the CVD reaction temperature.Specifically,few-layer graphene wrapped Co/Co3O4(FGr-Co/Co3O4)prepared at 450℃shows higher catalytic activity than the multi-layer graphene wrapped Co/CoO(MGr-Co/CoO)synthesized at 550℃,attributed to its comprehensive control of clean interface,valence distribution range and defects.Leveraging these advantages,the battery with FGr-Co/Co3O4shows favorable working stability with a degradation rate of only 0.08%over 500 cycles at 1.0 C.Furthermore,under an elevated sulfur loading of 6.1 mg cm–2,the battery harvests a remarkable areal capacity of 5.9 mA h cm–2along with stable cyclic operation. 展开更多
关键词 Lithium-sulfur battery Chemical vapor deposition Graphene wrapped Co-based promoter Graphene layer control Co valence state altering
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Near-infrared self-powered RuS2xSe2-2xalloy photodetector via chemical vapor deposition RuSe2and post-sulfurization process 认领 引用 被引量：2
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作者 Jaehyeok Kim Hwi Yoon +9 位作者 Inkyu Sohn Tatsuya Nakazawa Sangyoon Lee Donghyun Kim Yusuke Ohshima Hiroki Sato Seunggi Seo Sojeong Eom Seung-Min Chung Hyungjun Kim 《Rare Metals》 SCIE EI CAS CSCD 2025年第6期4050-4060,共11页
Ruthenium(Ru)-based chalcogenide(S,Se)is a promising material in various fields,such as optics,photoelectrodes,and electrocatalysis,owing to its suitable bandgap for generating charge carriers under light illumination... Ruthenium(Ru)-based chalcogenide(S,Se)is a promising material in various fields,such as optics,photoelectrodes,and electrocatalysis,owing to its suitable bandgap for generating charge carriers under light illumination ranging from visible to near-infrared(NIR)and its high absorption coefficient.In this study,we report the synthesis of Ru Se2thin films by chemical vapor deposition(CVD)with a bandgap matching the NIR region at 0.52 e V.Further,we demonstrated Ru S2xSe2-2xalloy films using the post-sulfurization process after CVD Ru Se2with a tunable bandgap from 0.52 to 1.39 e V depending on sulfur composition.Remarkably,Ru S2xSe2-2xalloy film metal–semiconductor–metal(MSM)photodetector sulfurized at 500°C,with a 0.75 e V bandgap,exhibits enhanced broad absorption across NIR spectral ranges,suppressed dark current and high photoresponsivity in NIR wavelengths range even at zero-bias.We believe the bandgaptunable Ru S2xSe2-2xthin film through an efficient deposition method could be suitable for various optoelectronic applications. 展开更多
关键词 RuSe2 Chemical vapor deposition RuS2xSe2-2xalloy Photodetector
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Response of precipitation isotopes and water vapor sources to regional climate change on the Gannan Plateau,China 认领 引用 被引量：2
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作者 CHEN Fenli KANG Nan +4 位作者 WANG Shengjie GAO Minyan ZHANG Qiuyan LI Huizhen YAO Yiwen 《Journal of Arid Land》 SCIE CSCD 2025年第4期440-456,共17页
Precipitation isotopes(δ18O and δ2H)are closely related to meteorological conditions for precipitation generation and the initial state of water vapor source areas,and are essential to the study of the regiona... Precipitation isotopes(δ18O and δ2H)are closely related to meteorological conditions for precipitation generation and the initial state of water vapor source areas,and are essential to the study of the regional hydrological cycle.The deuterium excess(d-excess)indicates deviation in isotope fractionation during evaporation and can trace water vapor sources.This study analyzed 443 precipitation samples collected from the Gannan Plateau,China in 2022 to assess precipitation isotope variations and their driving factors.Water vapor sources were evaluated using the Hybrid Single-Particle Lagrangian Integrated Trajectory(HYSPLIT),Concentration Weighted Trajectory(CWT),and Potential Source Contribution Factor(PSCF)models.Results showed that precipitation isotope values showed significant spatial and temporal variations on the Gannan Plateau.Temporally,precipitation isotope values peaked in June(when evaporation dominated)and minimized in March(depletion effect of air masses in the westerly wind belt).Spatially,the isotope values showed a distribution pattern of"high in the east and low in the west",which was mainly regulated by the differences in altitude and local meteorological conditions.Compared with the global meteoric water line(GMWL)with equation of δ2H=8.00δ18O+10.00,the slope and intercept of local meteoric water line(LMWL)for precipitation on the Gannan Plateau were smaller(7.49 and 7.63,respectively),reflecting the existence of a stronger secondary evaporation effect under the clouds in the region.The sources of water vapor on the Gannan Plateau showed significant seasonality and spatial heterogeneity.Specifically,the westerly belt and monsoon were the main water vapor transport paths at each sampling point,with Central Asian continental water vapor dominating in spring(53.49%),Indian Ocean water vapor dominating in summer(52.53%),Atlantic Ocean water vapor dominating in autumn(46.74%),and Atlantic Ocean and Mediterranean Sea water vapor dominating in winter(42.30%and 33.68%,respectively).Changes in the intensity of convective activity and Outgoing Longwave Radiation(OLR)affected the enrichment of isotopic values,which exhibited the same change trends as δ18O.During the precipitation process,the δ18O value first decreased and then increased.During the initial and final stages of precipitation process,precipitation was mainly influenced by continental air masses,while during the middle stage,it was controlled by marine air masses.The systematic research on precipitation isotopes and water vapor sources is important for climate change research and extreme precipitation prediction on the Gannan Plateau and other similar areas. 展开更多
关键词 precipitation isotopes deuterium excess(d-excess) water vapor sources Hybrid Single-Particle Lagrangian Integrated Trajectory(HYSPLIT) Concentration Weighted Trajectory(CWT) Potential Source Contribution Factor(PSCF) Gannan Plateau
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Surface segregation-intensified physical vapor deposition of TiO2 on polyether sulfone membranes for enhanced antifouling performances 认领 引用 被引量：1
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作者 Hong-Jian Wang Hai-Xia Wang +6 位作者 Yang-Yang Song Ke-Wei Qiu Yu-Zhu Liu Guo-Cheng Yao Wen-Liang Li Ya-Nan Liu Fu-Sheng Pan 《Rare Metals》 SCIE EI CAS CSCD 2025年第5期3362-3375,共14页
Coating techniques are efficient routes to modify surface property of composite membranes for enhanced membrane separations.However,it remains challenge to deposit continuous inorganic layers on hollow fiber substrate... Coating techniques are efficient routes to modify surface property of composite membranes for enhanced membrane separations.However,it remains challenge to deposit continuous inorganic layers on hollow fiber substrates.This study combines surface segregation with physical vapor deposition(PVD)to construct intensified TiO2layers on polyether sulfone(PES)hollow fiber substrates.During membrane fabrication,polyethylene-polypropylene glycol(F127)is used as surface segregation agent in casting solution,which enables PES hollow fibers with abundant hydroxy groups,thus improving the compatibility between PES and vaporized TiO2.The obtained PES/F127@TiO2membranes exhibit tight TiO2layers with tunable thickness,high mechanical strength,narrowed pore size and enhanced hydrophilicity.Moreover,the optimized PES/F127@TiO2membranes show competitive antifouling performances in water treatment,with a water permeability up to 97 L·m-2·h-1·bar-1and bovine serum albumin(BSA)rejection of~99%.This work is expected to provide a material design idea to deposit functional layers on polymers for fortified performances. 展开更多
关键词 Surface segregation Membrane separation Antifouling performance Physical vapor deposition TiO2coating
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Divergent responses of vegetation productivity to soil moisture and vapor pressure deficit across China:Spatiotemporal patterns and climatic attribution 认领 引用 被引量：1
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作者 SHI Chengyue ZHOU Yuke +2 位作者 CUI Na NIU Lujia YAO Haijun 《Journal of Geographical Sciences》 SCIE CSCD 2025年第7期1405-1431,共27页
Drought significantly constrains vegetation growth and reduces terrestrial carbon sinks.Currently,the spatiotemporal patterns and mechanisms of the differential impacts of soil and meteorological droughts on vegetatio... Drought significantly constrains vegetation growth and reduces terrestrial carbon sinks.Currently,the spatiotemporal patterns and mechanisms of the differential impacts of soil and meteorological droughts on vegetation productivity remain inadequately understood.In this study,we analyzed soil moisture(SM),vapor pressure deficit(VPD),and gross primary productivity(GPP)to investigate their spatiotemporal patterns and the combined effects on GPP over China.The results revealed that:(1)Soil drought and meteorological drought generally exhibited temporally synchronous trends across China.(2)GPP was predominantly affected by the combined and synchronous effects of both SM and VPD,although their effects displayed directional variability differences in certain regions.(3)SM demonstrated a greater relative importance on GPP than VPD across more than half of the regions in China,whereas deciduous broadleaf forests were the only vegetation type primarily affected by VPD.(4)Under the lag effects,both SM and VPD exhibited bidirectional Granger causality with GPP,with the interaction between VPD and GPP proving more pronounced than that of SM.Our research provides valuable insights into the mechanisms through which SM and VPD influence GPP,contributing to improved predictions vegetation productivity and implementing ecological restoration. 展开更多
关键词 soil moisture vapor pressure deficit gross primary productivity spatiotemporal patterns climatic attribution causal analysis
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