磷钼酸根和金属/氢-氧-三苯基膦单元构筑的杂化材料

A Hybrid Material Constructed from Phosphomolybdate Anion and Metal/Hydrogen⁃Oxygen⁃Triphenylphosphine Units

采用水热合成手段,以磷钼酸为多金属氧酸盐(简称多酸)建筑块,三苯基膦为有机配体,通过自组装的方式制备了一种无机-有机杂化化合物,通过X-射线单晶衍射技术确定其分子式为H_(15){(PMo_(12)O_(40))_(2)[MoO_(4)-(PPh_(3))_(4)]_(2)[NaO_(3)-(PPh_(3))_(3)][(H_(2)O-PPh_(3))3](化合物1)。该化合物是由[PMo_(12)O_(40)]^(3-)、[MoO_(4)-(PPh_(3))_(4)]^(2-)、[NaO_(3)-(PPh_(3))_(3)]^(5-)和H_(2)O-PPh_(3)建筑块之间通过静电作用力形成的一种新型无机-有机杂化材料。测试了该化合物的红外光谱、发光光谱、循环伏安特性曲线,重点研究了该化合物的光催化降解亚甲基蓝(MB)的性质。光降解实验结果表明,该化合物具有良好的降解有机染料的能力。

Under the hydrothermal synthesis,an organic⁃inorganic hybrid compound was prepared through the self⁃assembly process by using phosphomolybdic acid as a polyoxometallate(polyacid for short)building block and triphenylphosphine as an organic ligand.Its molecular formula was determined by X⁃ray single⁃crystal diffraction technique as H15{(PMo_(12)O_(40))_(2)[MoO_(4)⁃(PPh_(3))_(4)]_(2)⁃[NaO_(3)⁃(PPh_(3))_(3)][(H_(2)O⁃PPh_(3))_(3)](compound 1),which is a novel inorganic⁃organic hybrid material formed by electrostatic interactions between[PMo_(12)O_(40)]^(3-),[MoO4⁃(PPh_(3))_(4)]^(2-),[NaO_(3)⁃(PPh_(3))_(3)]^(5-)and H_(2)O⁃PPh_(3) building blocks.The IR spectrum,luminescence spectra and cyclic voltammetric characteristic curves of compound 1 were also tested,focusing on the photocatalytic degradation of methylene blue(MB).The good ability of compound 1 to degrade organic dyes was demonstrated by photodegradation analysis experiments.