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

• 来源期刊: 科学通报(英文版)
• 学科: 化学
• 年，卷（期）: 2012,（18）
• 页码范围: 2265-2268,2335-2336
• 页数: 1页
• 分类号: O643.32
• 语种: 中文

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.