不同配体修饰的Keggin结构硼钨多金属氧酸盐的合成及性能研究
Synthesis and properties research of Keggin structure borotungstates modified by different ligands
采用水热法，合成了一种不同配体修饰的、基于Keggin结构的有机-无机杂化物，通过元素组成分析和热重(TG)分析，确定其化学式为[{Cu(bipy)2}2{Cu(bipy)(Hbib)}2{BW12O40}]o2H2O(1) (bipy=2,2′-bipyridine, bib=1,4-bis(1-imidazoly)benzene)，利用红外光谱(IR)、紫外光谱(UV)和X-射线粉末衍射(XRD)对结构进行了表征。X-射线单晶衍射分析表明：化合物中每个[BW12O40]5-簇阴离子通过{Cu(bipy)(bib)}构成一个双聚体，在ac面双聚体像一个"吊坠"结构，相邻的结构单元通过氢键作用构成一维链，并通过超分子作用形成三维网络结构。循环伏安研究表明，化合物1具有三对氧化还原峰，可归属为W(Ⅵ)的还原，同时对H2O2的还原具有电催化作用。此外，化合物1对罗明丹B染料的降解率为91.5%，说明化合物还具有光催化活性。
One novel organic-inorganic hybrid are decorated by two disparate ligands based on Keggin structure: {Cu(bipy)2}2{Cu(bipy)(Hbib)}2{BW12O40}]o2H2O(1) (bipy=2,2′-bipyridine, bib=1,4-bis(1-imidazoly)benzene) have been hydrothermally synthesized and structurally characterized by the elemental analysis, IR, TG, UV-vis, XRD and the single-crystal X-ray diffraction. In compound 1, each [BW12O40]5- cluster anions connected by {Cu(2,2′-bipy)(bib)} group constitute a double polymers. This dimer looks like a "pendant" structure from ac side. The adjacent structure unit through hydrogen bonding interaction constitute one dimensional chain, through supramolecular role to form a three-dimensional network structure. The results showed that compounds 1 have three pairs of redox peaks attributable to three redox processes of W atoms. Meanwhile which plays an electric catalytic role in the reduction of H2O2. In addition, the degradation rate of RhB was 91.5%, indicating that the compound also has a photocatalytic activty.
王硕、于凯、苏占华、张鹤、周百斌
化学晶体学
BW12O40]5-水热合成电化学性质光催化性质
BW12O40]5-hydrothermal techniqueelectrochemical propertiesphotocatalytic properties
王硕,于凯,苏占华,张鹤,周百斌.不同配体修饰的Keggin结构硼钨多金属氧酸盐的合成及性能研究[EB/OL].(2016-05-17)[2025-08-11].http://www.paper.edu.cn/releasepaper/content/201605-484.点此复制
评论