Visible-light photocatalytic H_2 evolution over a series of transition metal substituted Keggin-structure heteropoly blues  

作　　者：ZhenLi Wang Ying Lu YangGuang Li ShiMing Wang EnBo Wang 

机构地区：[1]NE Normal Univ, Dept Chem, Minist Educ, Key Lab Polyoxometalate Sci, Changchun 130024, Peoples R China

出　　处：《Chinese Science Bulletin》2012年第18期2265-2268,共4页

基　　金：supported by the National Natural Science Foundation of China(91027002);the Special Fund from the Central Collegiate Basic Scientific Research Bursary;the Postdoctoral Station Foundation of Ministry of Education(20060200002);the Testing Foundation of Northeast Normal University(NENU);the Program for Chang jiang Scholars and Innovative Research Team in University

摘　　要：The visible light photocatalytic H 2 evolution activities of a series of transition-metal substituted Keggin-structure heteropoly blues K 6 SiW 11 O 39 M(H 2 O)·nH 2 O (M=Co,Ni,Cu and Zn) were systematically studied with Pt nanoparticles as co-catalyst.The H 2 evolution rates were 150,98,65 and 48 mol h-1g-1 for SiW 11 Cu,SiW 11 Ni,SiW 11 Co and SiW 11 Zn,respectively,meaning that the order of photocatalytic activity of these heteropoly blues from transition-metal substituted polyoxometalates was:SiW 11 Cu > SiW 11 Ni > SiW 11 Co > SiW 11 Zn.The catalysts could be efficiently reused for at least 5 cycles.The visible light photocatalytic H2 evolution activities of a series of transition-metal substituted Keggin-structure heteropoly blues K6SiW11O39M（H20）＇nH20 （M = Co, Ni, Cu and Zn） were systematically studied with Pt nanoparticles as co-catalyst. The H2 evolution rates were 150, 98, 65 and 48 μol h-lg 1 for SiWllCu, SiWHNi, SiWHCo and SiWHZn, respectively, meaning that the order of photocatalytic activity of these heteropoly blues from transition-metal substituted polyoxometalates was： SiW11Cu 〉 SiW11Ni 〉 SiWHCo 〉 SiW11Zn. The catalysts could be efficiently reused for at least 5 cycles.

关 键 词：KEGGIN结构 光催化活性 过渡金属 进化速率 杂多蓝 可见光 氢气 多金属氧酸盐 

分 类 号：O643.32[理学—物理化学]