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Construction of Pd-doped RuO_(2) nanosheets for efficient and stable acidic water oxidation

Green Energy & Environment 2024年第6期9卷 937-948页

作者： Yibo Liu Xing Hu Chenxi Liu Shan Zhu Kezhu Jiang Feng Liu Shijian Zheng Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology College of Materials Science and EngineeringHebei University of TechnologyTianjin300401China Yunnan Precious Metals Lab Co. LTDKunming650100China

RuO_(2) has been considered a potential alternative to commercial IrO_(2) for the oxygen evolution reaction(OER)due to its superior intrinsic ***,its inherent structure dissolution in acidic environments restricts its commercial *** this study,we report a novel Pd-doped ruthenium oxide(Pd–RuO_(2))nanosheet catalyst that exhibits improved activity and stability through a synergistic effect of Pd modulation of Ru electronic structure and the two-dimensional *** catalyst exhibits excellent performance,achieving an overpotential of only 204 mVat a current density of 10 mA cm^(-2).Impressively,after undergoing 8000 cycles of cyclic voltammetry testing,the overpotential merely decreased by 5 *** PEM electrolyzer with Pd0.08Ru0.92O_(2) as an anode catalyst survived an almost 130 h operation at 200 mA cm^(-2).To elucidate the underlying mechanisms responsible for the enhanced stability,we conducted an X-ray photoelectron spectroscopy(XPS)analysis,which reveals that the electron transfer from Pd to Ru effectively circumvents the over-oxidation of Ru,thus playing a crucial role in enhancing the catalyst's ***,density functional theory(DFT)calculations provide compelling evidence that the introduction of Pd into RuO_(2) effectively modulates electron correlations and facilitates the electron transfer from Pd to Ru,thereby preventing the overoxidation of ***,the application of the two-dimensional structure effectively inhibited the aggregation and growth of nanoparticles,further bolstering the structural integrity of the catalyst.

关键词： Oxygen evolution reaction Pd-doped ruthenium oxide two-dimensional structure Electron transfer Stability

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Construction of 2D/2D Ti_(3)C_(2)T_(x)MXene/CdS heterojunction with photothermal effect for efficient photocatalytic hydrogen production

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Journal of Materials Science & Technology 2024年第4期171卷 1-9页

作者： T.Y.Huang Z.Yang S.Y.Yang Z.H.Dai Y.J.Liu J.H.Liao G.Y.Zhong Z.J.Xie Y.P.Fang S.S.Zhang Key Laboratory for Biobased Materials and Energy of Ministry of Education Guangdong Laboratory for Lingnan Modern AgricultureCollege of Materials and EnergySouth China Agricultural UniversityGuangzhou 510643China School of Physics and Optoelectronics South China University of TechnologyGuangzhou 510640China School of Chemical Engineering and Energy Technology Guangdong Provincial Key Laboratory of Distributed Energy SystemsDongguan University of TechnologyDongguan 523808China

The insensitivity of semiconductors to visible and infrared light is a key constraint on the utilization of light energy in photocatalytic *** photocatalysts with full-spectrum absorption through surface engineering is an effective approach to fully harnessing light energy in semiconductor ***,a novel stable Ti_(3)C_(2)T_(x)MXene/CdS heterojunction catalyst is obtained by in-situ epitaxial growth of two-dimensional(2D)CdS nanosheets on 2D MXene interface via a solvothermal *** exceptional light absorption properties of MXene confer outstanding full-spectrum driven photocat-alytic hydrogen evolution capability upon the heterogeneous *** unique 2D/2D structure effectively mitigated the recombination of photogenerated carriers,enhancing the photocatalytic performance of the ***,the composite catalyst exhibits a significantly higher surface temperature of 80.4℃under visible light irradiation at an intensity of 0.1 W/cm^(2),which is 1.84 times higher than that of *** irradiation of visible and near infrared light,the composite catalyst with photothermal ef-fect demonstrates a remarkable hydrogen evolution rate of 65.4 mmol g^(-1)h^(-1),which is 7.2 times higher than that of CdS *** study introduces a novel approach for constructing full-spectrum absorption catalysts and expands the application of the photothermal effect in photocatalytic hydrogen evolution research.

关键词： two-dimensional structure Heterostructure Photothermal effect Photocatalyst Hydrogen evolution

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Boron leaching:Creating vacancy-rich Ni for enhanced hydrogen evolution

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Nano Research 2022年第3期15卷 1868-1873页

作者： Chao Han Weijie Li Jiazhao Wang Zhenguo Huang School of Civil and Environmental Engineering Faculty of Engineering and Information TechnologyUniversity of Technology SydneyNSW 2007Australia Institute for Superconducting&Electronic Materials AIIM BuildingInnovation CampusUniversity of WollongongSquires WayNorth WollongongNSW 2500Australia Centre for Green Technology Faculty of Engineering and Information TechnologyUniversity of Technology SydneyNSW 2007Australia

Creating vacancy is often highly effective in enhancing the hydrogen evolution performance of transition metal-based ***-rich Ni nanosheets have been fabricated via topochemical formation of two-dimentional(2D)Ni_(2)B on graphene precursor followed by boron *** on graphene,a few atomic layered Ni_(2)B nanosheets are first obtained by reduction and *** number of atomic vacancies are then generated in the Ni_(2)B layer via leaching boron *** used for hydrogen evolution reaction(HER),the vacancy-rich Ni/Ni(OH)_(2 )heterostructure nanosheets demonstrate remarkable performance with a low overpotential of 159 mV at a current density of 10 mA·cm^(−2) in alkaline solution,a dramatic improvement over 262 mV of its *** enhancement is associated with the formation of vacancies which introduce more active sites for HER along Ni/Ni(OH)_(2) *** work offers a facile and universal route to introduce vacancies and improve catalytic activity.

关键词： two-dimensional structure Ni_(2)B boron leaching vacancies hydrogen evolution reaction(HER)

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SiOx/C-Ag nanosheets derived from Zintl phase CaSi_(2) via a facile redox reaction for high performance lithium storage

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Nano Research 2022年第1期15卷 395-400页

作者： Jie Xie Lin Sun Yanxiu Liu Xinguo Xi Ruoyu Chen Zhong Jin Jiangsu Province Cultivation Base for State Key Laboratory of Photovoltaic Science and Technology School of Petrochemical EngineeringChangzhou UniversityChangzhou 213164China School of Chemistry and Chemical Engineering Yancheng Institute of TechnologyYancheng 224051China Key Laboratory of Mesoscopic Chmistry of Ministry of Education(MOE) School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China

As one of the high-capacity anodes in lithium-ion batteries(LIBs),silicon oxide(SiOx)has attracted wide attention due to its high theoretical capacity,low cost,and proper working ***,the huge volume change and the intrinsic poor conductivity of SiOx still hinder the practical *** to address the issues is the focus of current *** this work,firstly,hydrogen passivated Si nanosheets(Si6H6)were prepared from Zintl phase CaSi2,then,two-dimensional Ag nanoparticle modified SiOVC nanocomposite was prepared via a facile complex redox reaction between SieH6 and AgN03-aniline complexing *** this design,aniline was served as carbon sources,and Si6H6could be transformed to SiOx by AgN03 in mild solution *** obtained Ag modified SiOVC(SiOx/C-Ag)electrode exhibited high specific capacity(550 mAh·g^(-1)at 0.6 A·g^(-1)),superior rate,and cycling performance when served as anode for LIBs.

关键词： SiOx anode LIBs redox reaction two-dimensional structure solution synthesis

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Advances in catalytic elimination of atmospheric pollutants by two-dimensional transition metal oxides

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Chinese Chemical Letters 2023年第6期34卷 18-25页

作者： Rong Li Yongfang Rao Yu Huang Key Laboratory of Aerosol Chemistry and Physics State Key Laboratory of Loess and Quaternary Geology(SKLLQG)Institute of Earth EnvironmentChinese Academy of SciencesXi’an 710061China Center of Excellence in Quaternary Science and Global Change Chinese Academy of SciencesXi’an 710061China University of Chinese Academy of Sciences Beijing 100049China Department of Environmental Science and Engineering Xi’an Jiaotong UniversityXi’an 710049China

Atmospheric pollutants can deteriorate air quality and put human health at *** is a growing need for green,economical,and efficient technologies,among which catalytic elimination technology is the most promising,to remove atmospheric ***-dimensional transition metal oxides(2D TMOs)have recently become attractive catalysts due to their highly exposed active sites,excellent reactant transport properties,and extraordinary catalytic *** review systematically summarizes the topdown and bottom-up preparation methods of 2D TMOs and focuses on the specific applications of 2D TMOs in the catalytic elimination of atmospheric inorganic pollutants and volatile organic *** development of 2D TMOs in the catalytic elimination of atmospheric pollutants is *** review is expected to provide design insights into efficient 2D TMOs to remove atmospheric pollutants.

关键词： two-dimensional structure Transition metal oxides Atmospheric pollutants Catalytic elimination Preparation method

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品牌联合的消费者评价及其影响因素：基于二维结构的实证分析

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市场营销（理论版） 2010年第1期 115-125页

作者：陆娟边雅静吴芳

不知名品牌与知名品牌的联合对提升新品牌或不知名品牌资产的有效性，已得到西方学者的普遍认同。然而，由于该联合中合伙品牌的不对等地位，西方学者对该联合的消费者评价及其影响机理仍有不少分歧。本文在理论推演的基础上，提出了品... 详细信息

不知名品牌与知名品牌的联合对提升新品牌或不知名品牌资产的有效性，已得到西方学者的普遍认同。然而，由于该联合中合伙品牌的不对等地位，西方学者对该联合的消费者评价及其影响机理仍有不少分歧。本文在理论推演的基础上，提出了品牌联合评价的二维结构，构建了品牌联合评价及其影响因素的概念模型，选择选购品为研究刺激物，在中国市场上进行了实验研究。结果表明：品牌联合评价不仅具有二维性，而且在合伙品牌评价对联合品牌评价的影响上具有明显的维度差异；不知名品牌与知名品牌在该联合中的获益途径和对联合品牌评价的影响各不相同；联合匹配性和消费经验对联合品牌评价分别产生最为显著的直接影响和调节影响。

关键词：品牌联合消费者评价二维结构影响因素 brand alliance consumers' evaluation two-dimensional structure influencing factors

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Electronic modulation of two-dimensional bismuth-based nanosheets for electrocatalytic CO_(2) reduction to formate: A review

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Materials Reports(Energy) 2023年第1期3卷 51-64,I0002页

作者： Guan Wang Fangyuan Wang Peilin Deng Jing Li Chongtai Wang Yingjie Hua Yijun Shen Xinlong Tian State Key Laboratory of Marine Resource Utilization in South China Sea Hainan Provincial Key Lab of Fine ChemistrySchool of Chemical Engineering and TechnologyHainan UniversityHaikou570228China Key Laboratory of Electrochemical Energy Storage and Energy Conversion of Hainan Province School of Chemistry and Chemical EngineeringHainan Normal UniversityHaikou571158China

Electrocatalytic CO_(2) reduction reaction(eCO_(2) RR)has significant relevance to settle the global energy crisis and abnormal climate problem via mitigating the excess emission of waste CO_(2) and producing high-value-added ***,eCO_(2) RR to formic acid or formate is one of the most technologically and economically viable approaches to realize high-efficiency CO_(2) utilization,and the development of efficient electrocatalysts is very urgent to achieve efficient and stable catalytic *** this review,the recent advances for two-dimensional bismuth-based nanosheets(2D Bi-based NSs)electrocatalysts are concluded from both theoretical and experimental ***,the preparation strategies of 2D Bi-based NSs in aspects to precisely control the thickness and uniformity are *** addition,the electronic regulation strategies of 2D Bi-based NSs are highlighted to gain insight into the effects of the structure-property relationship on facilitating CO_(2) activation,improving product selectivity,and optimizing carrier transport ***,the considerable challenges and opportunities of 2D Bi-based NSs are discussed to lighten new directions for future research of eCO_(2) RR.

关键词： CO_(2) electroreduction two-dimensional structure Bismuth-based catalysts Preparation strategy Electronic structure regulation Formate

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THE APPLICATION OF BIOLOGICAL STEREOLOGY AND IMAGE ANALYSIS ON SYNAPTIC RESEARCH

THE APPLICATION OF BIOLOGICAL STEREOLOGY AND IMAGE ANALYSIS ...

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第十三届国际体视学大会

作者： Xinping Xu Hongyan Zuo Lifeng Wang Yang Li Li Zhao Shaoxia Wang Chengfeng Sun Xiaomin Wang Yabing Gao Ruiyun Peng Dewen Wang Department of Experimental Pathology Beijing Institute of Radiation Medicine Beijing 100850 China

＜正＞Objective:To investigate the biomedical value of the combination of stereology and image analysis by studying synapse index quantitatively. Method:The method of pathological image analysis can provide quantitative and digital evidence for pathologic *** has now become a necessary auxiliary means for scientific personnel to make an objective,accurate and reliable pathologic *** is an unbiased mathematical technique,which can accurately calculate the length,surface area,volume *** specific objects or *** on previous research of synaptic plasticity for many years,we have got large numbers of synaptic data such as length of active region,width of cleft,thickness of PSD and proteins related to synaptic plasticity by pathological image analysis on ultrastructure *** data were analyzed by the unbiased stereological technique in this *** the expression of protein is one of the methods to study changes of synaptic plasticity. Result:Deviations were sometimes evitable in pathological image *** the unbiased stereological analysis,we speculated synaptic capacity,neuronal density and glial cells density *** index such as area density and number density can measure the two-dimensional structure and three-dimensional space of slices accurately. Conclusion:The combination of pathological image analysis and stereology make us obtain reliable quantitative *** this method structure of tissues and cells can be analyzed more objectively and accurately on three-dimensional level.

关键词： biological stereology pathological image analysis synapse two-dimensional structure three-dimensional space

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