An example of binuclear ruthenium clusters anchored on poly-tungsten oxides for the photocatalysis reduction of nitrobenzene  

一例锚定在多钨氧酸盐上的双核钌簇用于硝基苯的光催化还原反应

作　　者：XIONG Lijuan ZHANG Shihao CHEN Wenjing YANG Mengnan NIU Jingyang WANG Jingping 熊丽娟;张世豪;陈文静;杨梦南;牛景杨;王敬平(河南大学化学与分子科学学院,河南开封475001)

机构地区：[1]College of Chemistry and Molecular Sciences,Henan University,Kaifeng 475001,China

出　　处：《分子科学学报》2024年第5期427-433,共7页Journal of Molecular Science

基　　金：supported by the National Natural Science Foundation of China(22271075,22071044,22171071,21771054,and 21571050)

摘　　要：In this paper,we have successfully prepared an organic-inorganic hybridized Keggin-type Ruthenium-containing polytungsten oxide clusters that combines the organic ligand 2,2'-bipyridine(2,2'-bpy)with the noble metal ruthenium,formulated as H_(3)[{Ru(H_(2)O)(bpy)}_(2)O(PW_(11)O_(39))]·10H_(2)O.Title compound inherited the strong absorption in the visible and UV regions,providing a good basis for photocatalysis.The experimental results showed that it exhibited good photocatalytic activity in the visible-lightdriven reduction of nitrobenzene using N_(2)H_(4)·H_(2)O as a reductant with a yield of 98.1%(turnover number is 322.5,turnover frequency is 53.75 h^(-1)).Three cycles of experiments indicated that this compound was an effective and stable heterogeneous catalyst.将有机配体2,2'-联吡啶和贵金属钌通过配位的方式与单缺位Keggin型多钨氧酸盐结合,合成了一例有机-无机杂化的含钌多钨氧簇H_(3)[{Ru(H_(2)O)(bpy)}_(2)O(PW_(11)O_(39))]·10H_(2)O。标题化合物在可见光区和紫外光区都有很强的吸收能力,为光催化反应提供良好的基础。实验结果表明,该化合物在以N_(2)H_(4)·H_(2)O为还原剂的可见光驱动下还原硝基苯的过程中表现出良好的光催化活性,产率高达98.1%(转化数为322.5,转化频率为53.75 h^(-1))。3次循环实验表明,标题化合物是一种有效而稳定的异相催化剂。

关 键 词：POLYOXOMETALATE RUTHENIUM nitrobenzene reduction 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学]