光催化
铂金
分解水
辐照
制氢
铂纳米粒子
材料科学
纳米线
X射线光电子能谱
光致发光
纳米颗粒
光催化分解水
氢
光电效应
光化学
接受者
化学工程
纳米技术
催化作用
化学
光电子学
有机化学
核物理学
工程类
物理
生物化学
凝聚态物理
作者
Mingming Wang,Jianjun Chen,Xin Liao,Zhaoxiang Liu,Judong Zhang,Li Gao,Ye Li
标识
DOI:10.1016/j.ijhydene.2014.07.068
摘要
Photocatalytic water splitting reaction of platinum nanoparticle-decorated SiC nanowire photocatalyst was investigated under the simulated sunlight irradiation. The Pt/SiC catalyst shows an enhanced photocatalytic activity for water splitting, and its average H2 evolution rate has been up to 4572 μL g−1 h−1. The average H2 production rate over the Pt/SiC catalyst is 88% higher than that of SiC nanowires without Pt nanoparticle-decoration. The XPS spectra exhibit that the surrounding electrons of C atoms can be rapidly transferred to Si and Pt active sites for water splitting. The photoluminescence spectra show that the platinum acts as an acceptor of photoelectrons to effectively restrain the electron–hole pair recombination of SiC nanowires. The novel Pt/SiC has great potential of being a low-cost, environmentally friendly solar-hydrogen production photocatalyst.
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