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In Situ Decoration of Znx Cd1-x S with FeP for Efficient Photocatalytic Generation of Hydrogen under Irradiation with Visible Light.
ChemPlusChem ( IF 3.4 ) Pub Date : 2018-09-01 , DOI: 10.1002/cplu.201800316
Xianglin Zhu 1 , Sijia Yu 1 , Xuezhong Gong 1 , Can Xue 1
Affiliation  

FeP as a noble-metal-free catalyst has been successfully decorated onto the Znx Cd1-x S photocatalyst surface through an in situ phosphating process. In particular, the 2 % FeP/Zn0.5 Cd0.5 S-P sample showed the best hydrogen generation activity of 24.45 mmol h-1  g-1 which is over 130 times higher than that of pure Zn0.5 Cd0.5 S and nearly 1.3 times higher than that of the 1 % Pt-loaded Zn0.5 Cd0.5 S-P sample. The apparent quantum yield (AQY) of the 2 % FeP/Zn0.5 Cd0.5 S-P was estimated to be over 10 % at wavelengths up to 470 nm. The fluorescence spectra and electrochemical measurement results suggest that the decorated FeP not only reduces the overpotential for H2 evolution but also promotes the separation of the photogenerated charge carriers through formation of a heterojunction with Zn0.5 Cd0.5 S, which eventually leads to the superior activity of the FeP/Zn0.5 Cd0.5 S-P photocatalyst for visible-light-driven hydrogen generation.

中文翻译:

用FeP原位装饰Znx Cd1-x S,在可见光照射下高效光催化产氢。

FeP作为一种不含贵金属的催化剂已通过原位磷化工艺成功地装饰在Znx Cd1-x S光催化剂表面上。特别是,2%FeP / Zn0.5 Cd0.5 SP样品显示出最佳的氢气产生活性,为24.45 mmol h-1 g-1,比​​纯Zn0.5 Cd0.5 S高130倍以上,几乎是比1%的Pt负载的Zn0.5 Cd0.5 SP样品高1.3倍。2%FeP / Zn0.5 Cd0.5 SP的表观量子产率(AQY)在波长高达470 nm时估计超过10%。荧光光谱和电化学测量结果表明,修饰的FeP不仅减少了H2释放的过电势,而且还通过与Zn0.5 Cd0.5 S形成异质结,促进了光生电荷载流子的分离,
更新日期:2018-09-03
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