一个新型的多酸基超分子化合物的合成表征及光催化和电化学传感器性能研究  

A new type of POM-based supramolecular compound can be used as a photocatalytic and electrochemical sensor:structure,characterization and properties

作　　者：田爱香[1] 金靓 应俊[1] TIAN Aixiang;JIN Liang;YING Jun(College of Chemistry and Materials Engineering,Bohai University,Jinzhou 121013,China)

机构地区：[1]渤海大学化学与材料工程学院,辽宁锦州121013

出　　处：《渤海大学学报（自然科学版）》2020年第4期308-313,共6页Journal of Bohai University:Natural Science Edition

基　　金：国家自然科学基金项目(No:21571023);辽宁省高等学校青年学者成长计划(LJQ2012097)。

摘　　要：在水热的条件下,选择了经典的Keggin型多金属氧酸盐H_3PMo12O40与一个吡啶基五元杂环衍生物配体-2-(4-吡啶基)4,5-二(2-吡啶基)咪唑(Py3Piz)反应,通过调节pH值得到了一个新多酸基超分子化合物[(Py3Piz)PMo12O40](1)(Py3Piz=2-(4-吡啶基)4,5-二(2-吡啶基)咪唑),使用红外光谱(FT-IR)与单晶X-射线衍射仪对其结构进行了表征,化合物1的结构单元包含一个游离的配体Py3Piz与一个多金属氧酸盐阴离子[PMo12O40]^3-,多酸阴离子[PMo12O40]^3-和配体Py3Piz通过氢键相互作用构成了锯齿状的1D超分子链,相邻的1D超分子链又通过氢键相互作用构成了波浪形的2D的超分子层.在性质方面研究了其光催化活性和电化学性能,结果表明化合物1对有机染料RhB具有良好的光催化降解活性,并且1-CPE对过氧化氢和亚硝酸钾具有一定的电催化性能.In this work,we selected the classic Keggin type Polyoxometalate H3PMo12O40and a pyridyl fivemembered heterocyclic derivative ligand-2-(4-pyridyl)4,5-di(2-pyridinyl)imdazole under the hydrothermal environmental conditions.Here,we obtained a new POM-based superamolecular compound[(Py3 Piz)PMo12O40](1)(Py3 Piz=2-(4-pyridyl)4,5-di(2-pyridinyl)imdazole)by adjusting the pH value.The structure was characterized by IR spectra(FT-IR)and single crystal X-ray diffraction.The structural unit of compound 1 contains a free ligand Py3 Piz and a polyoxometalate anion[PMo12O40]3-,the polyoxometalate anion[PMo12O40]^3-and the ligand Py3 Piz through hydrogen bonding to form a zigzag 1D supramolecular chain,adjacent 1 D supramolecular chains through hydrogen bonds to form a wavy 2 D supramolecular layer.In terms of properties,its photocatalytic activity and electrochemical catalytic performance have been studied,the results show that compound 1 has good photocatalytic degradation activity for organic dye RhB,and 1-CPE has certain electrochemical catalytic performance for hydrogen peroxide and potassium nitrite.

关 键 词：多金属氧酸盐 水热合成 电化学 光催化 

分 类 号：O614.8[理学—无机化学]