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自组装FeRu双金属纳米催化剂在可逆固体氧化物电池中实现高效稳定的CO-CO_(2)相互转化

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Science China Materials 2024年第5期67卷 1471-1480页

作者：王晶张栋刘通徐安琪罗瑶胡学雷王瑶 Key Laboratory of Green Chemical Process of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical TechnologySchool of Chemical Engineering and PharmacyWuhan Institute of TechnologyWuhan430205China School of Power and Mechanical Engineering Wuhan UniversityWuhan430072China

本文报道了一种适应于高效稳定的CO-CO_(2)相互转化的可逆固体氧化物电池(RSOC)相变燃料电极.该燃料电极由FeRu双金属纳米催化剂和Ruddlesden-Popper相Pr_(0.8)Sr_(1.2)Fe_(1-x-y)Ru_(x)Mo_(y)O_(4)氧化物复合而成(FeRu@PSFRM).固体氧化物燃料电池(SOFC)模式时,单电池800℃时的最大输出功率密度可以达到170 W cm^(-2);而在固体氧化物电解池(SOEC)模式下,800℃、1.3 V时电解池的电解电流密度达到-0.256 A cm^(-2).在SOFC-SOEC循环测试过程中,RSOC中CO-CO_(2)相互转化过程经历了“活化-稳定-衰退”三个明显阶段.幸运的是,性能衰退的燃料电极可通过“原位氧化-还原”处理实现性能再生,有效提升该电池的使用寿命.研究结果表明,原位脱溶形成的FeRu@PSFRM材料是一种极具应用潜力的燃料电极候选材料,以期实现高效稳定的CO-CO_(2)相互转化.

关键词： Ruddlesden-Popper oxide CO-CO_(2)conversion cycling test perovskite oxide reversible solid oxide cells distribution of relaxation times electrochemical impedance spectra fuel electrode

Phase diagram of muonium hydride:the significant effect of dimensionality

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Communications in Theoretical Physics 2024年第2期76卷 182-187页

作者： Jieru hu Massimo Boninsegni Department of Physics University of Alberta State Key Laboratory of Precision Spectroscopy East China Normal University

We carry out a theoretical investigation of the low-temperature phase diagram of muonium hydride in two dimensions,using numerical *** is shown that the phase diagram of this substance is qualitatively different in two and three ***,while in three dimensions it is essentially identical to that of parahydrogen,i.e.,only displaying a single(crystalline)*** two dimensions it is very similar to that of^(4)He,with an equilibrium liquid phase that turns superfluid at a temperature as high as~2.2 K,and crystallizes under applied *** is a well-described case of a continuous-space condensed matter system whose ground state equilibrium phase is qualitatively altered by dimensional reduction.

关键词： quantum fuids and solids quantum Monte Carlo phase diagrams

Near-Field Heat Transfer Enhancement of SiC-hBN-InSb Thermophotovoltaic System by Graphene Strong Coupling Effects

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Journal of Thermal Science 2024年第4期33卷 1409-1420页

作者： XU Zhiguo hu Zhifang School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai200240China

Near-field thermophotovoltaic(NTPV)devices comprising a SiC-hBN-graphene emitter and a graphene-InSb cell with gratings are designed to enhance the performance of the NTPV *** electrodynamics and rigorous coupled-wave analysis are employed to calculate radiative heat transfer *** is found that the NTPV systems with two graphene ribbons perform better due to the graphene strong coupling *** effects of graphene chemical potential are *** is demonstrated that near-field radiative heat transfer of thermophotovoltaic devices is enhanced by the coupling of surface plasmon polaritons,surface phonon polaritons,hyperbolic phonon polaritons,and magnetic polaritons caused by the graphene strong coupling *** splitting frequency of different polaritons is calculated to quantify the mutual interaction of graphene strong coupling ***,the effects of cell grating filling ratio are *** excitation of magnetic polaritons is affected by the graphene ribbon and the cell filling *** investigation provides a new explanation of the enhancement mechanism of graphene-assisted thermophotovoltaic systems and a novel approach for improving the output power of the near-field thermophotovoltaic system.

关键词： near-field radiative heat transfer thermophotovoltaics strong coupling effect multiple magnetic polaritons graphene-hbn heterostructures

Ionic liquid derived electrocatalysts for electrochemical water splitting

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Green Energy & Environment 2024年第4期9卷 604-622页

作者： Tianhao Li Weihua hu Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energy School of Materials and EnergySouthwest UniversityChongqing400715China Yibin Academy of Southwest University University RoadYibinSichuan644005China

Hydrogen production from electrochemical water splitting is a promising strategy to generate green energy,which requires the development of efficient and stable electrocatalysts for the hydrogen evolution reaction and the oxygen evolution reaction(HER and OER).Ionic liquids(ILs)or poly(ionic liquids)(PILs),containing heteroatoms,metal-based anions,and various structures,have been frequently involved as precursors to prepare electrocatalysts for water ***,ILs/PILs possess high conductivity,wide electrochemical windows,and high thermal and chemical stability,which can be directly applied in the electrocatalysis process with high *** this review,we focus on the studies of ILs/PILs-derived electrocatalysts for HER and OER,where ILs/PILs are applied as heteroatom dopants and metal precursors to prepare catalysts or are directly utilized as the *** to those attractive properties,IL/PIL-derived electrocatalysts exhibit excellent performance for electrochemical water *** these accomplishments and developments are systematically summarized and thoughtfully ***,the overall perspectives for the current challenges and future developments of ILs/PILs-derived electrocatalysts are provided.

关键词： Ionic liquid Electrochemical water splitting Hydrogen evolution reaction Oxygen evolution reaction

Influencing Factors on Cardiovascular Health in China

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Journal of Geriatric Cardiology 2024年第1期21卷 4-33页

作者： Sheng-Shou hu 无 Fuwai Hospital Chinese Academy of Medical Sciences BeijingChina the Writing Committee of the Report on Cardiovascular Health and Diseases in China

The Annual Report on Cardiovascular Health and Diseases in China(2022)intricate landscape of cardiovascular health in *** is the first section of the report,which dissects influential factors across diverse *** investigation identifies tobacco use as a paramount concern,portraying China as the global epicenter of tobacco *** smoking,exacerbated by second-hand smoke exposure,emerges as a critical and preventable risk factor,contributing to a surge in attributable deaths over the past three *** the realm of dietary nutrition,the study discerns an overall improvement,yet discerns worrisome deviations,notably an escalating fat intake surpassing recommended *** shifting dietary structure reveals diminished consumption of cereals and vegetables juxtaposed with an uptick in animal foods,while excessive intake of cooking oil and salt persists,straying substantially from endorsed *** exploration of physical activity patterns unfolds a nuanced *** trends are observed among students,with concerns arising from sedentary behaviors and inadequate adherence to recommended *** analysis spans a trajectory of declining physical activity in Chinese adults,coupled with an alarming surge in sedentary leisure time,ultimately linking these factors to heightened risks of cardiovascular diseases and increased *** examination of overweight and obesity trends uncovers a relentless upward trajectory,projecting substantial prevalence by *** prevalence rates underscore the imperative for targeted interventions to curtail this burgeoning health crisis,with the anticipated prevalence extending to nearly two-thirds of the adult *** factors,notably depression,constitute an integral facet of cardiovascular *** rates among patients with coronary artery disease and acute myocardial infarction underscore the intricate interplay between mental health and cardiovascular

关键词： Influencing smoke linking

Rational modulation of electronic structure in PtAuCuNi alloys boosts efficient electrocatalytic ethanol oxidation assisted with energy-saving hydrogen evolution

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Journal of Energy Chemistry 2024年第6期93卷 557-567,I0014页

作者： hu Yao Yinan Zheng Xin Yu Songjie hu Baolian Su Xiaohui Guo Key Lab of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education The College of Chemistry and Materials ScienceNorthwest UniversityXi’an 710069ShaanxiChina Department of Inorganic Chemistry University of NamurBruxellesB-5000 NamurBelgium

Compared to conventional electrocatalytic water splitting,electrocatalytic ethanol oxidation reaction(EOR)along with hydrogen production is considered a more energy-efficient ***,we prepared a type of novel quaternary alloy catalyst(PtAuCuNi@NF)that exhibits excellent activity for EOR(0.215 V at 10 mA cm^(-2))and hydrogen evolution reaction(HER)(7 mV at 10 mA cm^(-2)).Experimental results demonstrated that both Cu and Ni modulated the electronic environment around Pt and *** electron-rich active center facilitates the rapid adsorption and dissociation of reactants and intermediates for both EOR and ***,in the ethanol-assisted overall water splitting(E-OWS),a current density of 10 mA cm^(-2)was achieved at 0.28 ***,an advanced acid-base self-powered system(A-Bsps)that can achieve a self-powered voltage of 0.59 V was ***,the self-driven hydrogen production with zero external power supply was realized by integrating A-Bsps with the E-OWS *** interesting results can provide a feasible strategy for designing and developing advanced nanoalloy-based materials for clean energy integration and use in various fields.

关键词： Pt-based alloy Electronic structure Ethanol oxidation Self-powered system Overall water splitting

Unusual Single Electron Transfer Reactions between Alkenes and Iodine Electrophiles

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Chinese Journal of Chemistry 2024年第5期42卷 471-477页

作者： Zhengzhao Lou Jingyu hu Chuanfa Ni Xiu Wang Jinbo hu Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences345 Ling Ling RoadShanghai200032 China School of Physical Science and Technology ShanghaiTech University100 Haike RoadShanghai201210 China

The electrophilic addition to an alkene with an electrophile has been widely studied and applied in organic *** organic chemistry textbook describes the classical reaction between an alkene and an iodine electrophile(such as elemental iodine and N-iodosuccinimide(NIS))as a typical ionic reaction,in which an iodonium ion is formed and then attacked by a ***,in this article,we report a new and unusual reaction mode between an alkene and NIS;that is,a single electron transfer(SET)process occurs between these two reactants by forming an electron-donor acceptor *** only does this unusual single electron transfer reaction between an alkene and NIS add fundamentally important knowledge to organic chemistry,it also provides a valuable synthetic method as the new SET reaction mode with opposite regioselectivity as compared with the traditional ionic mode.

关键词： Electrophilic addition Radical ions Reaction mechanisms Alkenes Fluorine

淡水鱼类环境DNA宏条形码引物的筛选及其在千岛湖的应用

维普期刊数据库评论

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维普期刊数据库

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湖泊科学 2024年第1期36卷 187-199页

作者：周严童璐胡文静李志力郝雷刘其根胡忠军上海海洋大学农业农村部鱼类营养与环境生态研究中心上海201306 上海海洋大学农业农村部淡水水产种质资源重点实验室上海201306

基于环境DNA(eDNA)技术的鱼类多样性监测方法因具有灵敏度高、对目标生物无伤害以及成本低等特点,近年来在国内外得到了广泛应用。eDNA方法的有效性往往取决于宏条形码引物的选择,尽管目前已经有一些鱼类环境DNA宏条形码引物,但较少有... 详细信息

基于环境DNA(eDNA)技术的鱼类多样性监测方法因具有灵敏度高、对目标生物无伤害以及成本低等特点,近年来在国内外得到了广泛应用。eDNA方法的有效性往往取决于宏条形码引物的选择,尽管目前已经有一些鱼类环境DNA宏条形码引物,但较少有研究综合评估这些引物的检出效果。本研究评估了来自COI、Cytb、12S rRNA和16S rRNA基因的29对鱼类e DNA宏条形码引物(包括本研究设计的2对和从国内外文献中引用的27对引物),首先基于计算机模拟PCR(in silico PCR)进行了初步分析,随后通过高通量测序对其中效果较好的17对引物开展了更进一步的验证,结果显示:计算机模拟PCR结果良好的引物在进行高通量测序时并非全部表现良好,表明引物的筛选不能仅仅依靠计算机模拟PCR;具有更长扩增片段长度的宏条形码引物并没有获得理想中更好的扩增效果,表现效果好的引物大多是扩增片段长度处于200~300 bp之间的引物;相对于COI和Cytb而言,12S rRNA引物与16S rRNA引物均具有良好的扩增效果,适宜作为鱼类环境DNA宏条形码而用于鱼类多样性研究;同时,鉴于当前的鱼类DNA条形码数据库尚不完备以及不同引物的特性不同,使用多对引物将大大增加物种的检出概率和e DNA研究的可信性。本研究展示了eDNA在评估生物多样性方面的潜力,有助于将来的鱼类eDNA研究,从而为鱼类多样性的保护提供参考。

关键词： eDNA DNA宏条形码生物多样性计算机模拟PCR 引物千岛湖

Intraseasonal variability of the Kuroshio observed via mooring at 18°N

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Journal of Oceanology and Limnology 2024年第2期42卷 468-483页

作者： Xin YUAN Qingye WANG Jie MA Shijian hu Dunxin hu Key Laboratory of Ocean Circulation and Waves Institute of OceanologyChinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China Laoshan Laboratory Qingdao 266237China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China

Insufficient observations near the origin of the Kuroshio have led to incomplete understanding of the intraseasonal variability(ISV)of the *** measurements of the Kuroshio velocity were performed with an array of three profiler moorings(122.7°E,123°E,and 123.3°E)along 18°N from January 2018 to February *** ISV of the Kuroshio at 18°N was investigated based on a combination of mooring observations and global high-resolution HYbrid Coordinate Ocean Model reanalysis *** estimated time-averaged transport in the upper 350 m across the observation transect was 6.5±2.6 Sv(1.0 Sv=10^(6)m^(3)/s).Two significant ISV peaks at 50-60 and~100 d were recognized in the power spectra of the meridional velocity and *** analysis indicated that the ISV at 50-60 d was caused by westward-propagating eddies at average propagation speed of~13 cm/s and wavelength of~635 *** ISV peak at~100 d was mainly caused by northward-propagating eddies generated in the North Equatorial Current *** investigation indicated that the ISV of the Kuroshio at 18°N is dominated by meridional transport,rather than by the zonal migration of the Kuroshio main *** findings provide a better understanding of the ISV of the Kuroshio east of Luzon Island.

关键词： intraseasonal variability(ISV) Kuroshio mooring observation eddy