一种基于柔性双(吡啶)-双(酰胺)配体和Keggin型多酸的杂化物的合成及性能  

Synthesis and catalytic properties of a Keggin-type polyoxometalate-based hybrid based on a flexible bis (pyridyl)-bis (amide) ligand

作　　者：王青林[1] 梁爽 曾凌[1] WANG Qinglin, LIANG Shuang, ZENG Ling(College of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121013, China)

机构地区：[1]渤海大学化学化工学院,辽宁锦州121013

出　　处：《渤海大学学报（自然科学版）》2018年第2期119-124,共6页Journal of Bohai University:Natural Science Edition

基　　金：国家自然科学基金项目(No:21401010)

摘　　要：利用水热合成技术设计合成了一种基于柔性双(吡啶)-双(酰胺)配体和Keggin型多酸阴离子[PW_(12)O_(40)]^(3-)的有机-无机杂化物[(H_2bpah)2(PW_(11)~ⅥW^VO_(40))]·2H_2O(1)(bpah=N,N'-双(3-吡啶酰胺基)-1,6-己烷),并通过红外光谱和单晶X-射线衍射对杂化物的结构进行了表征.此杂化物的结构单元是由质子化的双(吡啶)-双(酰胺)配体H_2bpah、Keggin型多阴离子[PW_(11)~ⅥW^VO_(40)]^(4-)和结晶水分子组成的,离散的H_2bpah和[PW_(11)~ⅥW^VO_(40)]^(4-)间通过氢键作用拓展成三维超分子网络结构.标题杂化物修饰碳糊电极可以有效电催化还原亚硝酸钾和过氧化氢,而且此杂化物在紫外光照射下可以光催化降解有机染料分子亚甲基蓝和罗丹明B.A Keggin-type polyoxometalate-based hybrid derived from a flexible bis（ pyridyl）-bis（ amide） ligand [N,N＇-bis（ 3-pyridinecarboxamide）-1,6-hexane]（ bpah） and the polyanion[PW（12）O（40）]3-has been designed and synthesized with the hydrothermal method. The structure of the hybrid[（ H2 bpah）2（PW（11）^ⅥW^VO（40）） ]·2 H2O was characterized by the IR spectra and single crystal X-ray diffraction. The structural unit of the title hybrid contains two protonated bis（ pyridyl）-bis（ amide） ligands H2 bpah,one Keggin-type polyanion[PW（11）^ⅥW^VO（40）]^（4-）and two lattice water molecules. The hydrogen-bonding interactions between the discrete H2 bpah molecules and polyanions[PW（11）^ⅥW^VO（40）]^（4-）result in building the three-dimensional supramolecular network. The title hybrid modified carbon paste electrode exhibit excellent electrocatalytic activities towards the reduction of nitrite and hydrogen peroxide. Additionally,the hybrid possesses good photocatalytic activities towards the degradation of organic dyes methylene blue and rhodamine B under UV irradiation.

关 键 词：双吡啶-双酰胺配体 Keggin型多酸 晶体结构 电催化活性 光催化性能 

分 类 号：O614.812[理学—无机化学]