Assembly of an unprecedented inorganic chain featuring bicapped saturated Keggin type [VMo12O40 (VO)(2)](4-) polyoxoanion

摘要

A new bivanadium-capped saturated Keggin polyoxometalates based hybrid compound, H[(VMo8Mo4O40)-Mo-VI-O-V(VO)(2)] (HBIX)(3) (BIX = 1,3-bis(imidazol-1-ylmethyl)benzene) (VMo12V2), was hydrothermally synthesized by surfactant trea-assisted method and structurally characterized by routine techniques. Compound VMo12V2 represents the first example of one dimensional inorganic chain based on the bivanadium-capped saturated Keggin POMs, which is very stable in solution and air at the room temperature. Furthermore, compound VMo12V2 modified carbon-paste electrode (VMo12V2-CPE) displays the good electrocatalytic activity toward the reduction of bromate, in which the catalytic activity mainly depends on the six-electron-reduced species of Mo.