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Single atom catalyst for electrocatalysis

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Chinese Chemical Letters 2021年第10期32卷 2947-2962页

作者： Jianan Su linzhou zhuang Shusheng Zhang Qingju Liu Longzhou Zhang Guangzhi Hu School of Materials and Energy and Yunnan Key Laboratory for Micro/nano Materials&Technology Institute of Optoelectronic Information MaterialsYunnan UniversityKunming 650091China School of Chemical Engineering East China University of Science and TechnologyShanghai 200237China College of Chemistry and Molecular Engineering Zhengzhou UniversityZhengzhou 450000China

Single atom catalyst(SAC)refers to a novel catalyst with the active metal atoms individually anchored on the *** atom catalysts present the unique appeal due to the high atomic availability and specific activity,as well as the high pathway ***,we summarized the classification,preparation,characterization,and application of single atom ***,the current bottlenecks and the outlooks of the SAC research are discussed.

关键词： Single atom catalyst Electrocatalysis Oxygen reduction reaction Hydrogen evolution reaction Oxygen evolution reaction

Tuning oxygen vacancies in two-dimensional iron-cobalt oxide nanosheets through hydrogenation for enhanced oxygen evolution activity

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Nano Research 2018年第6期11卷 3509-3518页

作者： linzhou zhuang Yi Jia Tianwei He Aijun Du Xuecheng Yan Lei Ge Zhonghua Zhu Xiangdong Yao School of Chemical Engineering The University of Queensland Brisbane 4072 Australia School of Environment and Science and Queensland Micro- and Nanotechnology Centre Griffith University Nathan Campus Brisbane 4111 Australia School of Chemistry Physics and Mechanical Engineering Queensland University of Technology Gardens Point Campus Brisbane 4001 Australia

The oxygen evolution reaction （OER） represents the rate-determining step of electrocatalytic water splitting into hydrogen and oxygen. Creating oxygen vacancies and adjusting their density has proven to be an effective strategy to design high-performance OER catalysts. Herein, a hydrogenation method is applied to treat a two-dimensional （2D） iron-cobalt oxide （Fe1Co1Ox-origin）, with the purpose of tuning its oxygen vacancy density. Notably, compared with Fe1Co1Ox-origin, the iron-cobalt oxide hydrogenated at 200℃ and 2.0 MPa optimized conditions exhibits a markedly improved OER activity in 1.0 M KOH （with an overpotential 17 of 225 mV at a current density of 10 ***^-2） and a rapid reaction kinetics （with a Tafel slope of 36.0 mV·dec^-1）. Moreover, the OER mass activity of the hydrogenated oxide is 1.9 times that of Fe1Co1Ox-origin at an overpotential of 350 mV. The experimental results, combined with density functional theory （DFT） calculations, reveal that the optimal control of oxygen vacancies in 2D Fe1Co1Ox via hydrogenation can improve the electronic conductivity and promote OH- adsorption onto nearby low-coordinated Co^3＋ sites, resulting in a significantly enhanced OER activity.

关键词： hydrogenation tuning oxygen vacancy oxygen evolution reaction

One-step In-situ Synthesis of Vacancy-rich CoFe2O4@Defective Graphene Hybrids as Bifunctional Oxygen Electrocatalysts for Rechargeable Zn-Air Batteries

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Chemical Research in Chinese Universities 2020年第3期36卷 479-487页

作者： WANG X in zhuang linzhou JIA Yi ZHANG Lijie YANG Qin XU Wenjia YANG Dongjiang YAN Xuecheng ZHANG Longzhou ZHU Zhonghua BROWN Christopher L YUAN Pei YAO Xiangdong School of Environment and Science ami Queensland Micro-and Nanotechnology CentreGriffith UniversityNathan CampusQueensland 4111Australia School of Chemistry Physics and Mechanical EngineeringQueensland University of TechnologyBrisbaneQueensland 4000Australia Collaborative Innovation Center for Mahne Biomass Fibers Materials ami Textiles of Shandong ProvinceInstitute of Marine Biobased MaterialsCollege of Environmental Science and EngineeringQingdao UniversityQingdao 266071P.R.China National Engineering Research Center of Chemical Fertilizer Catalyst College of Chemical EngineeringFuzhou UniversityFuzhou 350002P.R.China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin UniversityChangchun 130012P.R.China

Developing efficient catalysts toward both oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is the core task for rechargeable metal-air *** integration of two active components should be an effective method to produce the bifunctional catalysts in principle,traditional techniques still can not attain fine tunable surface structure during material-hybridization ***,we present a facile short-time in-situ argon(Ar)plasma strategy to fabricate a high-performance bifunctional hybrid catalyst of vacancy-rich CoFe2O4 synergized with defective graphence(r-CoFe2O4@DG).Reflected by the low voltage gap of 0.79V in two half-reaction measurements,the striking capability to catalyze ORR/OER endows it excellent and durable performance in rechargeable Zn-air batteries,with a maximum power density of 155.2mW/cm^2 and robust stablility(up to 60h).Further experimental and theoretical studies validate its remarkable bifunctional energetics root from plasma-induced surface vacancy defects and interfacial charge polarization between DG and CoFe2O4.

关键词： Defect CoFe2O4 Oxygen reduction Oxygen evolution Zn-air battery

用于海水电解质中高效分解水合肼的镍-钼/钨双金属纳米合金

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Science China Materials 2023年第10期66卷 3846-3854页

作者：王珂宇梁晨易致远徐放王一兴雷林峰庄林洲徐至 State Key Laboratory of Chemical Engineering School of Chemical EngineeringEast China University of Science and TechnologyShanghai 200237China

利用水合肼氧化反应(HzOR)取代缓慢的析氧反应(OER)是一种可以在海水裂解中长期产生氢气并抑制不利的析氯反应(ClER)的方法.然而,很少有催化剂能够满足在双电极系统中同时呈现出优异的析氢反应(HER)和HzOR以达到较低的电池电压的要求.在... 详细信息

利用水合肼氧化反应(HzOR)取代缓慢的析氧反应(OER)是一种可以在海水裂解中长期产生氢气并抑制不利的析氯反应(ClER)的方法.然而,很少有催化剂能够满足在双电极系统中同时呈现出优异的析氢反应(HER)和HzOR以达到较低的电池电压的要求.在此,我们报道了双金属Ni_(4)Mo/Ni_(4)W纳米合金作为双功能催化剂,该催化剂对HER(-7 mV,10 mA cm^(-2))和HzOR(-16 mV,10 mA cm^(-2))具有显著的催化活性.在1.0 mol L^(-1)KOH/2.0 molL^(-1)NaCl/0.1 mol L^(-1)N_(2)H_(4)电解液中,双电极系统需要34,295和548 mV的低电池电压就能达到10,100和200mAcm^(-2).密度泛函理论计算表明,Ni-Mo/W耦合不仅可以降低水解离的自由能和氢的吸附/脱附,而且可以优化吸附水合肼中间体的脱氢动力学.

关键词： bimetallic nanoalloy synergistic effect hydrogen evolution hydrazine splitting

富含氧空位的NiFe氢氧化物衍生的具有超疏气纳米阵列形貌的磷化物及其全解水性能

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Science China Materials 2023年第7期66卷 2662-2671页

作者：王珂宇梁晨李诗谊李嘉煜易致远徐放王一兴雷林峰朱明辉李思瑶庄林洲徐至 State Key Laboratory of Chemical Engineering School of Chemical EngineeringEast China University of Science and TechnologyShanghai 200237China

对高效催化剂进行多尺度调控可优化中间体的吸附能量(原子层面),并实现快速传质(三维宏观层面),这对于提升整体水分解性能至关重要.在本工作中,我们首先在镍铁氢氧化物中引入氧空位,然后通过磷化反应将其转化为具有纳米阵列形态的NiFe-V... 详细信息

对高效催化剂进行多尺度调控可优化中间体的吸附能量(原子层面),并实现快速传质(三维宏观层面),这对于提升整体水分解性能至关重要.在本工作中,我们首先在镍铁氢氧化物中引入氧空位,然后通过磷化反应将其转化为具有纳米阵列形态的NiFe-Vo-P催化剂.在析氧反应催化过程中,NiFe-Vo-P表面会原位形成磷酸盐阴离子及具有催化活性的Ni(Fe)OOH,能显著优化反应中间体的吸附强度.结果表明,NiFeVo-P在过电位为289 mV时电流密度可达1.5 A cm^(-2).同时,其超亲水/超疏气纳米阵列形貌可有效促进传质,在25和70℃的条件下,可在~2.0V的电池电压下分别获得580 mA cm^(-2)和1.0 A cm^(-2)的电流密度,是未进行超疏气形貌工程催化剂的电流密度的2倍以上.

关键词： oxygen vacancies kirkendall voids superhydrophilic/superaerophobic surface nickel(iron)oxyhydroxides water splitting

Annual cost of illness of stomach and esophageal cancer patientsin urban and rural areas in China： A multi-center study

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Chinese Journal of Cancer Research 2018年第4期30卷 439-448页

作者： Zhixun Yang Hongmei Zeng Ruyi Xia Qian Liu Kexin Sun Rongshou Zheng Siwei Zhang Changfa Xia He Li Shuzheng Liu Zhiyi Zhang Yuqin Liu Guizhou Guo Guohui Song Yigong Zhu Xianghong Wu Bingbing Song Xianzhen Liao Yanfang Chen Wenqiang Wei Guihua zhuang Wanqing Chen National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100021 China School of Public Health Xi'an Jiaotong University Health Science Center Xi'an 710061 China Henan Office for Cancer Control and Research the Affiliated Cancer Hospital of Zhengzhou University Henan Cancer Hospital Zhengzhou 450008China Gansu Wuwei Tumor Hospital Wuwei 733000 China Cancer Epidemiology Research Center Gansu Provincial Cancer HospitalLanzhou 730050 China linzhou Cancer Hospital Linzhou 456500 China Cixian Cancer Institute Handan 056500 China Luoshan Center for Disease Control and Prevention Xinyang 464299 China Center for Disease Control and Prevention of Sheyang County Sheyang 224300China Heilongjiang Office for Cancer Control and Research Harbin Medical University Cancer Hospital Harbin 150081 China Hunan Office for Cancer Control and Research Hunan Cancer Hospital Changsha 410006 China Yueyang Lou District Center for Disease Prevention and Control Yueyang 414021 China

Objective： Stomach and esophageal cancer are imposing huge threats to the health of Chinese people whereasthere were few studies on the financial burden of the two ***： Costs per hospitalization of all patients with stomach or esophageal cancer discharged betweenSeptember 2015 and August 2016 in seven cities/counties in China were collected, together with their demographicinformation and clinical details. Former patients in the same hospitals were sampled to collect information onannual direct non-medical cost, indirect costs and annual number of hospitalization. Annual direct medical cost wasobtained by multiplying cost per hospitalization by annual number of hospitalization. Annual cost of illness （ACI）was obtained by adding the average value of annual direct medical cost, direct non-medical cost and indirect cost,stratified by sex, age, clinical stage, therapy and pathologic type in urban and rural areas. Costs per hospitalizationwere itemized into eight parts to calculate the proportion of each part. All costs were converted to 2016 US dollars（1 USD：6.6423 RMB）.Results： Totally 19,986 cases were included, predominately male. Mean ages of stomach cancer and urbanpatients were lower than that of esophageal cancer and rural patients. ACI of stomach and esophageal cancerpatients were $10,449 and $13,029 in urban areas, and $2,927 and $3,504 in rural areas, respectively. Greater ACIwas associated with male, non-elderly patients as well as those who were in stage I and underwent *** medicine fee took the largest proportion of cost per ***： The ACI of stomach and esophageal cancer was tremendous and varied substantially among thepopulation in China. Preferential policies of medical insurance should be designed to tackle with this burden andfurther reduce the health care inequalities.

关键词： Cost of illness stomach neoplasms esophageal neoplasms China

西藏列廷冈铁多金属矿床磁铁矿元素地球化学特征及地质意义

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岩石矿物学杂志 2016年第5期35卷 821-839页

作者：李壮唐菊兴王立强杨毅钟毅中国地质科学院矿产资源研究所北京100037 中国地质大学地球科学与资源学院北京100083 西藏自治区地质调查院西藏拉萨850000 重庆市地质矿产勘查开发局107地质队重庆401120

西藏列廷冈矿床是林周盆地Fe-Mo-Cu-Pb-Zn矿集区内近年来新发现不久、规模较大的矽卡岩型铁多金属矿床。矿区磁铁矿发育,主要包括块状、浸染状和脉状3种类型。基于详细的野外地质调查和室内矿相学研究,将矿床成矿期划分为矽卡岩期和热液... 详细信息

西藏列廷冈矿床是林周盆地Fe-Mo-Cu-Pb-Zn矿集区内近年来新发现不久、规模较大的矽卡岩型铁多金属矿床。矿区磁铁矿发育,主要包括块状、浸染状和脉状3种类型。基于详细的野外地质调查和室内矿相学研究,将矿床成矿期划分为矽卡岩期和热液期2期,进而划分为5个成矿阶段:早期矽卡岩阶段、退化蚀变阶段、早期热液阶段、石英-硫化物阶段和碳酸盐阶段,其中,块状磁铁矿主要形成于退化蚀变阶段,浸染状和脉状磁铁矿主要形成于早期热液阶段。以磁铁矿为主要研究对象,采用电子探针(EPMA)和单矿物微量稀土元素ICP-MS分析实验,重点对磁铁矿元素地球化学特征、成因矿物学进行系统研究。研究结果表明,3种不同类型磁铁矿内均含Ti、Si、Ca等次要元素以及Na、K、Cr、Ni、Co、Pb、Ba、Sn、Sr、Sb、Cu等多种可检测到的微量元素,且矿物内主要发生了Al、Mg、Mn等元素的类质同像置换,综合TiO_2-Al_2O_3-MgO、TiO_2-Al_2O_3-(MgO+Mn O)和(Ca+Al+Mn)-(Ti+V)、Ni/(Cr+Mn)-(Ti+V)等多种磁铁矿成因判别图解投图结果及矿体野外宏观地质特征,表明矿区磁铁矿均为热液成因。块状磁铁矿具明显的Eu正异常,浸染状和脉状磁铁矿具Eu负异常,均无明显Ce异常特征,表明富Eu成矿流体在矽卡岩期的高温氧化环境下形成了矽卡岩型块状磁铁矿体,在热液期则逐渐转变为低温还原环境,形成浸染状和脉状磁铁矿及多种金属硫化物,且铁的物质来源主要与矿区花岗闪长岩和花岗斑岩紧密相关。

关键词：地球化学磁铁矿电子探针 ICP—MS 列廷冈西藏