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synthesis of Photoluminescent Gold nanoclusters by Intense X-ray Irradiation

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Synthesis of Photoluminescent Gold nanoclusters by Intense X...

Experimental study on LHcD Efficiency in HT-7 Tokamak

中国颗粒学会超微颗粒专委会2013年年会暨第八届海峡两岸超微颗粒学术研讨会

作者： sheng-Feng Lai chia-chi chien Yi-Yun chen Y.Hwu c.s.yang G.Margaritondo Institute of Physics Academia Sinica center for Nanomedicine National Health Research Institutes Ecole Polytechnique Federale de Lausanne(EPFL) CH-1015 LausanneSwitzerland

We describe a simple and effective method to obtain colloidal photoluminescent gold nanoclusters(Au Ncs).The method is primarily based on irradiation of a gold ion solution in the presence of 11-mercaptoundecanoic acid(MUA) with high-flux X-rays from a synchrotron *** tests demonstrated that MUA,being an effective surfactant, not only allows tunable size control of the NPs,but also facilitates ***

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中国核科技报告 1999年第S4期 369-369页

作者： B.J.Ding G.L.Kuang Y.X.Liu D.c.Liu G.H.Zheng J.s.Wu F.K.Liu W.c.shen J.A.Lin c.s.yang H.D.Xu J.W.Yu Y.Y.Huang L.Q.shang Y.J.shi Z.W.Wu F.X.Yin X.D.Zhang X.N.Liu J.K.Xie Y.X.Wan Academia sinica Institute of Plasma Physics Hefei 230031 china

Lower Hybrid current Drive (LHcD) experiments on HT-7 Tokamak have been carried out by scanning the following two parameters: central line averaged electron density (0.5～2.0)×10cmand toroidal magnetic field (B=1.62... 详细信息

关键词： Experimental study on LHcD Efficiency in HT-7 Tokamak HT

Increase in the variability of terrestrial carbon uptake in response to enhanced future ENsO modulation

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Atmospheric and Oceanic science Letters 2025年第1期18卷 32-38页

作者： Younong Li Li Dan Jing Peng Qidong yang Fuqiang yang Key Laboratory of Regional climate-Environment for Temperate East Asia Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Key Laboratory of Atmospheric Environment and Processes in the Boundary Layer over the Low-Latitude Plateau Region Department of Atmospheric ScienceYunnan UniversityKunmingChina

El Niño-southern Oscillation(ENsO)is a major driver of climate change in middle and low latitudes and thus strongly influences the terrestrial carbon cycle through land-air *** the ENsO modulation and carbon flux variability are projected to increase in the future,but their connection still needs further *** investigate the impact of future ENsO modulation on carbon flux variability,this study used 10 cMIP6 earth system models to analyze ENsO modulation and carbon flux variability in middle and low latitudes,and their relationship,under different scenarios simulated by cMIP6 *** results show a high consistency in the simulations,with both ENsO modulation and carbon flux variability showing an increasing trend in the *** higher the emissions scenario,especially ssP5-8.5 compared to ssP2-4.5,the greater the increase in *** flux variability in the middle and low latitudes under ssP2-4.5 increases by 30.9%compared to historical levels during 1951-2000,while under ssP5-8.5 it increases by 58.2%.Further analysis suggests that ENsO influences mid-and low-latitude carbon flux variability primarily through *** occurrence may potentially be attributed to the increased responsiveness of gross primary productivity towards regional temperature fluctuations,combined with the intensified influence of ENsO on land surface temperatures.

关键词： carbon variability ENsO modulation cMIP6 models

High-temperature-tolerant flexible supercapacitors: Gel polymer electrolytes and electrode materials

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Journal of Energy chemistry 2025年第1期100卷 426-457页

作者： chong Peng Xinyi Huang Mingwei Zhao shuling Liao Quanhong yang Nianjun yang siyu Yu school of chemistry & chemical Engineering Southwest University Nanoyang Group Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage School of Chemical Engineering and Technology and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin University Department of chemistry & IMO-IMOMEc Hasselt University

The development of flexible supercapacitors(Fscs) capable of operating at high temperatures is crucial for expanding the application areas and operating conditions of supercapacitors. Gel polymer electrolytes and electrode materials stand as two key components that significantly impact the efficacy of hightemperature-tolerant Fscs(HT-Fscs). They should not only exhibit high electrochemical performance and excellent flexibility, but also withstand intense thermal stress. considerable efforts have been devoted to enhancing their thermal stability while maintaining high electrochemical and mechanical performance. In this review, the fundamentals of HT-Fscs are outlined. A comprehensive overview of state-of-the-art progress and achievements in HT-Fscs, with a focus on thermally stable gel polymer electrolytes and electrode materials is provided. Finally, challenges and future perspectives regarding HT-Fscs are discussed, alongside strategies for elevating operational temperatures and *** review offers both theoretical foundations and practical guidelines for designing and manufacturing HT-Fscs, further promoting their widespread adoption across diverse fields.

关键词： Flexible supercapacitors High-temperature tolerance Gel polymer electrolytes Electrode materials

Role of the Greenland sea ice anomaly in the late-spring drought over Northwest china

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Atmospheric and Oceanic science Letters 2025年第1期18卷 1-5页

作者： yang Liu Huopo chen Nansen-Zhu International Research centre Institute of Atmospheric Physics Chinese Academy of SciencesBeijingChina collaborative Innovation center on Forecast and Evaluation of Meteorological Disasters Nanjing University for Information Science and TechnologyNanjingChina

Drought across Northwest china in late spring has exerted a vital effect on the local climate and agricultural production,and has been alleviated during the past *** study explored the influence of the preceding Arctic sea ice on the May drought in Northwest china caused by the precipitation *** analysis indicated that when the Greenland sea ice concentration is abnormally high during February to April,the dry conditions in Northwest china tend to be *** increase of sea ice in the Greenland sea can excite a meridional circulation,which causes sea surface temperature(ssT)anomalies in the North Atlantic via the sea-air interaction,manifested as significant warm ssT anomalies over the south of Greenland and the subtropical North Atlantic,but negative ssT anomalies over the west of the *** abnormal ssT pattern maintains to May and triggers a zonal wave train from the North Atlantic through scandinavia and central Asia to Northwest china,leading to abnormal cyclones in Northwest ***,Northwest china experiences a more humid climate than usual.

关键词： Arctic sea ice Greenland sea North Atlantic ssT Drought Northwest china

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A surface engineering strategy for the stabilization of zinc metal anodes with montmorillonite layers toward long-life rechargeable aqueous zinc ion batteries

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Journal of Energy chemistry 2025年第1期100卷 94-105页

作者： Wenbo Wang Ruifeng Xu Xu Zhang Peiyu Wang Bao yang Bingjun yang Juan yang Kailimai su Pengjun Ma Yanan Deng Xianfeng Fan Wanjun chen Key Laboratory for Electronic Materials College of Electrical Engineering Northwest Minzu University Resource chemistry and Energy Materials Research center State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences University of Chinese Academy of Sciences Institute for Materials and Processes School of Engineering University of Edinburgh

Rechargeable aqueous zinc-ion batteries （AZIBs） exhibit appreciable potential in the domain of electrochemical energy ***,there are serious challenges for AZIBs,for instance zinc dendrite growth,hydrogen evolution reaction （HER）,and corrosion side ***,we propose a surface engineering modification strategy for coating the montmorillonite （MMT） layer onto the surface of the Zn anode to tackle these issues,thereby achieving high cycling stability for rechargeable *** results reveal that the MMT layer on the surface of the Zn anode is able to provide ordered zincophilic channels for zinc ions migration,facilitating the reaction kinetics of zinc *** functional theory（DFT） calculations and water contact angle （cA） tests prove that MMT@Zn anode exhibits superior adsorption capacity for Zn2+and better hydrophobicity than the bare Zn anode,thereby achieving excellent cycling ***,the MMT@Zn||MMT@Zn symmetric cell holds the stable cycling over 5600 h at 0.5 mA cm-2and 0.125 m A h cm-2,even exceeding 1800 h long cycling under harsh conditions of 5 m A cm-2and 1.25 m A h *** MMT@Zn||V2O5full cell reaches over 3000 cycles at 2 A g-1with excellent rate ***,this surface engineering modification strategy for enhancing the electrochemical performance of AZIBs represents a promising application.

关键词： surface engineering strategy Montmorillonite layer Protection mechanism of Zn anode cycling stability Aqueous zinc ion batteries

Anomalous quality factor evolution of induced transparency in a virtualized coupled-oscillator system

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science china(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 148-155页

作者： Yunhan yang Han Jia Tuo Liu Yuzhen yang Jun yang Key Laboratory of Noise and Vibration Research Institute of Acoustics Chinese Academy of Sciences University of chinese Academy of sciences state Key Laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences

The phenomenon of induced transparency, characterized by a high quality(Q) factor, holds significant importance in the fields of high-precision sensing, energy storage and wave manipulation. conventional transparency systems are often constrained by the limited experimentally accessible parameter space and the lack of independent control over intrinsic parameters, thereby hindering advanced research on high-Q effects. Here we propose a virtualized coupled-oscillator system that enables reconfigurable induced transparency in the reflection spectrum. By virtually incorporating a pair of coupled oscillators into an individual acoustic meta-atom, we achieve the manipulation of induced transparency in a decoupled, wide-ranging, and elaborate manner. Exploiting the diverse evolutions across the intrinsic parameter space, we show experimentally a counter-intuitive increase in the Q-factor of the transparency window, which is attributed to the enhanced dissipation of the bright ***, a constant group delay at the center frequency is observed accompanying this evolution. Our work demonstrates an intriguing platform as well as a novel strategy to engineer high-Q induced transparency phenomenon, and paves the way towards applications in programmable acoustic sensors, filters and slow-wave devices.

关键词： induced transparency acoustic meta-atom high quality-factor scattering programmable intrinsic parameter

synergistic promotion strategy of “dual-site” and “dual-path” to enhance the c–c coupling between cO2 and HcHO driven by photoelectrocatalysis

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Journal of Energy chemistry 2025年第1期100卷 39-49页

作者： Hongqiang yang Jianfeng Zheng Guoyu Wang Yifei Gao Yatao yang Jia Li Xiaojin Han Yan cui Zhanggen Huang National Key Laboratory of High Efficiency and Low carbon Utilization of coal Institute of Coal Chemistry Chinese Academy of Science University of chinese Academy of science shenyang University of chemical Technology

Photoelectrocatalytic coupling cO2and volatile organic compounds （VOcs） is a promising green strategy for the synergistic conversion of the two carbon-containing resources to *** catalytic efficiency is always at the mercy of chemical inertness of cO2and the competitive hydrogen evolution of ***,a modified g-c3N4/ZnAl-LDH Z-scheme heterojunction catalyst with dual reaction site was rationally designed and precisely *** Faraday efficiency of ethanol reached 68.67%with a corresponding formation rate of 227.3μmol *** revealed by in-situ characterizations and density functional theory calculations,cO2and HcHO were absorbed at Zn site and N site,***,*cO generated from cO2and HcHO was converted to*cH3O and*cHO on the dual-active-site *** detailed reaction mechanism experiments indicated that c–c coupling only occurred between*cO and*cH3O in electrocatalysis *** from the“*cO+*cH3O”path,another“*cO+*cHO”coupling path was also detected in photoelectrocatalytic *** selectivity of ethanol was significantly enhanced due to the synthesis of dual-site catalyst and the dual-path coupling path between cO2and HcHO simultaneously driven by light and electricity.

关键词： Photoelectrocatalysis Z-scheme c–c coupling Ethanol

Metal nanoparticles decorated coFe-(oxy)hydroxysulfides nanosheets fabricated by a general strategy for electrocatalytic water splitting

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Journal of Energy chemistry 2025年第1期100卷 26-38页

作者： Xiaodong yang Haochen shen Xiaoming Xiao Zhichao Li Qi Zhou Wei yang Bin Jiang Yongli sun Luhong Zhang Zhenhua Yan school of chemical Engineering and Technology Tianjin University Key Laboratory of Advanced Energy Materials chemistry (Ministry of Education) Nankai University

This study presents a novel method to fabricate metal-decorated,sulfur-doped layered double hydroxides （M/sLDH） through spontaneous redox and sulfurization *** developed Ag/sLDH and Pt/sLDH catalysts with abundant heterogeneous interfaces and hierarchical nanostructures demonstrated outstanding oxygen evolution reaction （OER） and hydrogen evolution reaction （HER） performance,achieving low overpotentials of 212 and 35 mV at 10 mA cm-2in 1 M KOH,*** both anode and cathode in water splitting,they required only 1.47 V to reach 10 mA cm-2and exhibited high structural robustness,maintaining stability at 1000 mA cm-2for 300 ***-situ Raman analysis revealed that the synergistic effects of metal nanoparticles and s doping significantly promote the transformation into the s-co1-xFexOOH layer,which serves as the active phase for water ***,ultraviolet photoelectron spectroscopy （UPs） and density functional theory （DFT） analyses indicated that incorporating metal nanoparticles and s doping increase electron density near the Fermi level and reduce reaction energy barriers,thus enhancing intrinsic OER and HER *** study provides a scalable strategy for synthesizing high-performance electrocatalysts for water splitting,with promising potential for broader applications.

关键词： LDH spontaneous reaction Metal nanoparticles Water splitting