一种多孔三维超分子钴配合物的合成与光催化性能  

Synthesis and Photocatalytic Property of a Porous Three-Dimensional Supramolecular Cobalt Compound

作　　者：林宏艳[1] 田原[1] 曾凌[1] 王青林[1] LIN Hongyan TIAN Yuan ZENG Ling WANG Qinglin(College of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121013, Liaoning Province, China)

机构地区：[1]渤海大学化学化工学院,辽宁锦州121013

出　　处：《吉林大学学报（理学版）》2017年第1期162-167,共6页Journal of Jilin University:Science Edition

基　　金：国家自然科学基金(批准号:21501013)

摘　　要：选择一种柔性的N,N′-双(3-吡啶)己二酰胺(L)和邻苯二甲酸(H2BDC)为混合有机配体,利用水热合成技术自组装制备一种新的多孔钴配合物[Co(L)1.5(BDC)(H2O)3]n(1),并通过元素分析、红外光谱和单晶X射线衍射技术表征其晶体结构.实验结果表明:该配合物属于三斜晶系,P1空间群,晶胞参数为a=1.097 87(10)nm,b=1.213 82(11)nm,c=1.429 40(13)nm,α=72.788(2)°,β=75.235(2)°,γ=72.127(2)°,V=1.703 3(3)nm3,Mr=575.43,Z=2,Dcal=1.122g/cm3,μ=0.549 mm-1,F(000)=598,S=1.064,R1=0.054 3,ωR2=0.151 8;配合物中金属钴离子通过双齿的L配体连接形成[Co(L)1.5]2n+n一维链结构,羧酸配体BDC以单齿配位模式悬挂在链的两侧,一维链间通过氢键作用拓展成包含大孔结构的三维超分子网络;该多孔钴配合物在紫外光作用下对有机染料分子亚甲基蓝和刚果红有明显的光催化降解能力.A new porous cobalt compound [Co（L）1,5 adipamide, H2 BDC = 1,2-benzenedicarboxylic acid） （BDC） （H2O）3 ]. （1） （L= N, N＇-bis（3-pyridyl） was prepared by the self-assembly process of hydrothermal synthesis by selecting the mixed ligands of the flexible bis（pyridyl）-bis（amide） L and the aromatic dicarboxylate H2BDC. The crystal structure of the compound was characterized by the element analysis, IR and the single crystal X-ray diffraction technique. Experimental results show that the compound belongs to triclinic system, P1 space group, a = 1. 097 87 （10） nm, b = 1. 213 82 （ 11 ） nm, c=1.429 40（13） nm, a=72.788（2）°, β=75.235（2）°, γ=72.127（2）°, V= 1.703 3（3） nm3, Mr=575.43, Z=2, Dcal=1. 122 g/cm3, μ=0. 549 mm-1, F（000）=598, S=1. 064, R1=0. 054 3, WR2 =0. 151 8. The metal cobalt ions are bridged by the bidentate L ligands to form a one-dimensional [Co（L）1.5]2a＋ chain structrue, and the carboxylate ligand BDC is suspended on both sides of this chain with a monodentated coordination mode. A three-dimensional supramolecular porous network with large pore structure is expanded by the hydrogen-bonding interactions among one-dimensional chains. This porous cobalt compound shows the remarkable photocatalytic degradation ability to the organic dye molecules methylene blue or congo red under the UV light.

关 键 词：混合配体 钴配合物 氢键作用 多孔结构 光催化活性 

分 类 号：O614[理学—无机化学]