基于混合配体的镍(Ⅱ)MOF基电催化剂的合成、结构表征及性能研究  

Synthesis,Structure Characterization and Properties of Nickel(Ⅱ)MOF-Based Electrocatalyst Based on Mixed Ligands

作　　者：潘会宾 乔得聪 王嘉欣 高霞 卢久富[2] PAN Huibin;QIAO Decong;WANG Jiaxin;GAO Xia;LU Jiufu(Department of Public Education,Shangluo Vocational&Technical College,Shangluo 726000,China;Shaanxi Province Key Laboratory of Catalysis,College of Chemical and Environment Science,Shaanxi University of Technology,Hanzhong 723001,China;School of Chemical Engineering&Modern Materials,Shangluo University,Shangluo 726000,China)

机构地区：[1]商洛职业技术学院公共课教学部,商洛726000 [2]陕西理工大学催化基础与应用重点实验室,化学与环境科学学院,汉中723001 [3]商洛学院化学工程与现代材料学院,商洛726000

出　　处：《人工晶体学报》2024年第12期2167-2172,2180,共7页Journal of Synthetic Crystals

基　　金：国家自然科学基金青年科学基金(22003037)。

摘　　要：在溶剂热条件下,以Ni(NO_(3))_(2)·6H_(2)O为金属源、五甲基间苯二甲酸(H_(2)MIP)配体和1,3-双(2-甲基-1H-咪唑-1-基)丙烷(BMIP)为混合配体,构筑了一例新型Ni(Ⅱ)有机骨架材料{[Ni_(4)(MIP)_(4)(BMIP)_(3)]·DMF}_(n)(SNUT-36)。X射线单晶衍射结果表明:SNUT-36呈现一个4,6链接双节点的二重穿插的三维骨架结构,拓扑分析数据为(3^(2)·4^(5)·5·6^(7))(3^(4)·4^(7)·5·6^(3))。进一步通过粉末X射线衍射、红外光谱、热重分析等手段对得到的配合物进行表征。此外,化学测试结果显示,SNUT-36达到20 mA·cm^(-2)时的过电位为430 mV,表明其具有良好的电催化性能,Tafel斜率为89 mV·dec^(-1),也证实了其对提高析氧反应速率具有良好的效果。Under solvothermal conditions,using Ni(NO_(3))_(2)·6H_(2)O as the metal source,pentamethy lisophthalic acid(H_(2)MIP)ligand and 1,3-bis(2-methyl-1H-imidazol-1-yl)propane(BMIP)as mixed ligands,a new Ni(Ⅱ)organic framework material,{[Ni_(4)(MIP)_(4)(BMIP)_(3)]·DMF}_(n)(SNUT-36),was constructed.X-ray single crystal diffraction analysis shows that SNUT-36 presents a binodal(4,6)connected double-interpenetrated three-dimensional skeleton structure with topological analysis data of(3^(2)·4^(5)·5·6^(7))(3^(4)·4^(7)·5·6^(3)).The obtained complex was further characterized by powder X-ray diffraction,infrared spectroscopy,thermogravimetric analysis and other means.In addition,the electrochemical test results show that SNUT-36 achieve an overpotential of 430 mV at 20 mA·cm^(-2),indicating its good electrocatalytic performance.The Tafel slope of 89 mV·dec^(-1) also confirmed its good effect on improving the oxygen evolution reaction rate.

关 键 词：Ni(Ⅱ)有机骨架材料 溶剂热 电催化 混合配体 析氧反应 

分 类 号：O643.36[理学—物理化学] O641.4[理学—化学]