基于四核铜簇单元构筑的配位聚合物及光催化降解性能

A Coordination Polymer Constructed by Tetranuclear Copper Cluster Units and Its Photocatalytic Degradation Properties

以1,3-双咪唑基丙烷(1,3-BIP)、1,3,5-苯三甲酸(H_(3)BTC)和Cu(NO_(3))_(2)·3H_(2)O为原料,在溶剂热条件下合成了Cu(II)配位聚合物[Cu_(2)(μ_(3)-OH)(1,3-BIP)(BTC)]_(n)(SNUT-20),并用元素分析、热重分析、红外光谱、单晶X射线衍射等表征手段对配位聚合物进行了表征。单晶X射线衍射解析结果表明,配位聚合物SNUT-20是一个以四核铜簇作为次级结构单元,通过混合配体的进一步连接,形成一个3,8双节点的拓扑结构。此外,配位聚合物SNUT-20对罗丹明B(RhB)、亚甲基蓝(MB)和甲基橙(MO)表现出良好的光催化降解性能,对RhB、MB、MO的降解率分别达到了81.5%、89.4%和48.3%。

A coordination polymer[Cu_(2)(μ_(3)-OH)(1,3-BIP)(BTC)]_(n)(SNUT-20)was constructed by 1,3-di(1H-imidazol-1-yl)propane(1,3-BIP),benzene-1,3,5-tricarboxylic acid(H_(3)BTC)and Cu(NO_(3))_(2)·3H_(2)O under solvothermal method.Its structure was confirmed by elemental analysis(EA),thermogravimetric analysis(TGA),FT-IR and single crystal X-ray diffraction.Single crystal X-ray diffraction exhibits that SNUT-20 is a 3D framework with a tetranuclear copper cluster as a secondary structural unit,which forms a binodal(3,8)-connected topology by further ligation of mixed ligand.In addition,SNUT-20 exhibits good photocatalytic degradation performance for rhodamine B(RhB),methylene blue(MB)and methyl orange(MO),RhB,MB and MO reach 81.5%,89.4%and 48.3%of the degradation rates,respectively.