Extended structural materials constructed from sulfate-centered Preyssler-type polyoxometalate with excellent electrocatalytic property  

作　　者：Na Zhang Luying Hong Aifang Geng Jinghui Yan Shuang Yao Zhiming Zhang 

机构地区：[1]College of Chemistry and Environmental Engineering, Changchun University of Science and Technology [2]Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology

出　　处：《Chinese Chemical Letters》2018年第9期1409-1412,共4页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.21671032);Science and Technology Development Project Foundation of Jilin Province(No.20150520001JH);Science and Technology Research Foundation of the Thirteenth Five Years of Jilin Educational Committee(No.[2015]0056/JJKH20170605KJ)

摘　　要：Sulfate-centered Preyssler-type polyoxometalate was used as the precursor to react with transition metal cations and organic ligand for constructing inorganic-organic hybrid materials {H[Ni2（H2O）4（Htrz）3]2（KSsW30O110）}·18H2O （trz = 1,2,4-triazole） （1）, which was characterized by single crystal X-ray diffraction analysis, energy-dispersive X-ray （EDX）, power X-ray diffraction （PXRD）, IR spectra and thermogravimetric （TG） analyses. In 1, the cylindrical vacancy of the inorganic crown-type anion （SsW30Ouo） captures a K^＋ ion resulting in the anion {KS5W3oO110）^9-, which was further connected by dimeric [Ni2（H2O）4（Htrz）3]2 metal-organic units into an one-dimensional （1D） chain-like structure. These 1D chains are further packed to form a three-dimensional （3D） supramolecular structure via Hbonding interactions. Here, the sulfate-centered Preyssler-typepolyoxometalate was firstly used to coordinate with transition metal cations and introduced into the inorganic-organic hybrid materials. Electrocatalytic study indicates that compound I exhibits good electrocatalytic activity toward reduction of H2O2 and NO2^-.Sulfate-centered Preyssler-type polyoxometalate was used as the precursor to react with transition metal cations and organic ligand for constructing inorganic-organic hybrid materials {H[Ni2（H2O）4（Htrz）3]2（KSsW30O110）}·18H2O （trz = 1,2,4-triazole） （1）, which was characterized by single crystal X-ray diffraction analysis, energy-dispersive X-ray （EDX）, power X-ray diffraction （PXRD）, IR spectra and thermogravimetric （TG） analyses. In 1, the cylindrical vacancy of the inorganic crown-type anion （SsW30Ouo） captures a K^＋ ion resulting in the anion {KS5W3oO110）^9-, which was further connected by dimeric [Ni2（H2O）4（Htrz）3]2 metal-organic units into an one-dimensional （1D） chain-like structure. These 1D chains are further packed to form a three-dimensional （3D） supramolecular structure via Hbonding interactions. Here, the sulfate-centered Preyssler-typepolyoxometalate was firstly used to coordinate with transition metal cations and introduced into the inorganic-organic hybrid materials. Electrocatalytic study indicates that compound I exhibits good electrocatalytic activity toward reduction of H2O2 and NO2^-.

关 键 词：Preyssler-type POLYOXOMETALATE Transition metal Supramolecular structure Electrocatalytic activity 

分 类 号：O641.4[理学—物理化学]