[Ni(4,4′-bpy)_(2)(phen)][H_(2)SiW_(12)O_(40)]·2H_(2)O的合成、结构及光催化性能研究  

Synthesis,structure and photocatalytic properties of[Ni(4,4′-bpy)_(2)(phen)][H_(2)SiW_(12)O_(40)]·2H_(2)O

作　　者：刘亚冰[1] 李洪印 王梓烨 LIU Ya-bing;LI Hong-yin;WANG Zi-ye(Department of Materials Science and Engineering,Jilin Jianzhu University,Changchun 130018,China)

机构地区：[1]吉林建筑大学材料科学与工程学院,吉林长春130018

出　　处：《吉林师范大学学报(自然科学版)》2025年第2期32-39,共8页Journal of Jilin Normal University:Natural Science Edition

基　　金：国家自然科学基金项目(51801070)。

摘　　要：混合配体簇聚物不仅极大地丰富了杂化材料的结构多样性,还赋予了它们独特的性能.本文以Na_(2)WO_(4)·2H_(2)O、Na_(2)SiO_(3)、邻菲啰啉(phen)、4,4′-联吡啶(4,4′-bpy)和NiCl_(2)·6H_(2)O为原料,通过水热合成法制备了一种新型混合配体簇聚物[Ni(4,4′-bpy)_(2)(phen)][H_(2)SiW_(12)O_(40)]·2H_(2)O(化合物1),并采用元素分析、红外光谱、X射线粉末衍射、热重分析和X射线单晶衍射等手段对化合物1的结构进行了表征.结构解析揭示,化合物1中的Keggin型簇阴离子[H_(2)SiW_(12)O_(40)]^(2-)通过配合物阳离子[Ni(4,4′-bpy)_(2)(phen)]^(2+)连接,形成一维链状结构,而这些相邻链之间则通过多样化的氢键作用进一步构筑成三维超分子网络.此外,以亚甲基蓝(MB)溶液作为工业污染物的模拟对象,评估了化合物1的光催化降解能力.实验数据显示,化合物1对MB的光催化降解率高达90.7%,表明其有望成为一种新型的水环境生态修复光催化剂.Mixed-ligand cluster-based polymers have significantly expanded the structural diversity and functional versatility of hybrid materials.In this study,a novel mixed-ligand cluster polymer,[Ni(4,4′-bpy)_(2)(phen)][H_(2)SiW_(12)O_(40)]·2H_(2)O(compound 1),was synthesized via a hydrothermal method using Na_(2)WO_(4)·2H_(2)O,Na_(2)SiO_(3),1,10-phenanthroline(phen),4,4′-bipyridine(4,4′-bpy),and NiCl_(2)·6H_(2)O as precursors.The structure of compound 1 was comprehensively characterized through elemental analysis,infrared spectroscopy,powder X-ray diffraction,thermogravimetric analysis,and single-crystal X-ray diffraction.Structural analysis revealed that the Keggin-type polyoxometalate cluster[H_(2)SiW_(12)O_(40)]^(2-)is interconnected by the coordination complex cation[Ni(4,4′-bpy)_(2)(phen)]^(2+),forming a one-dimensional chain architecture.These chains are further assembled into a three-dimensional supramolecular network via diverse hydrogen-bonding interactions.Furthermore,the photocatalytic activity of compound 1 was evaluated using methylene blue(MB)as a model industrial pollutant.Experimental results demonstrated that compound 1 achieved a remarkable MB degradation efficiency of 90.7% under light irradiation,highlighting its potential as a high-performance photocatalyst for ecological remediation in aqueous environments.

关 键 词：混合有机配体 簇基杂化材料 光催化 水热合成 

分 类 号：O64[理学—物理化学]