Shape-dependent photocatalytic hydrogen evolution activity over a Pt nanoparticle coupled g-C3N4 photocatalyst

被引：248

作者：

Cao, Shaowen ^{[1
]}

Jiang, Jing ^{[1
]}

Zhu, Bicheng ^{[1
]}

Yu, Jiaguo ^{[1
,2
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, 122 Luoshi Rd, Wuhan 430070, Peoples R China

[2] King Abdulaziz Univ, Fac Sci, Jeddah 21589, Saudi Arabia

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2016年 / 18卷 / 28期

基金：

中国博士后科学基金;

关键词：

GRAPHITIC CARBON NITRIDE; PLATINUM NANOPARTICLES; NANOCRYSTALS; H-2-PRODUCTION; COCATALYSTS; SELECTIVITY; REDUCTION; COMPOSITE; CATALYSTS; SIZE;

D O I：

10.1039/c6cp02832b

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Cubic, octahedral and spherical platinum (Pt) nanoparticles (NPs) ex situ supported on a graphitic carbon nitride (g-C3N4) substrate are synthesized using a colloidal adsorption-deposition method for photocatalytic hydrogen evolution reactions. These Pt NPs of different shapes have similar sizes of around 10 nm but have different facets exposed. It is found that the visible-light-driven photocatalytic activities for the Pt/g-C3N4 hybrid photocatalysts follow the order as: cubic Pt/g-C3N4 < octahedral Pt/g-C3N4 < spherical Pt/g-C3N4, revealing the significant cocatalyst shape-sensitive photocatalytic activity in the Pt/g-C3N4 hybrids. This is mainly due to the different surface atomic structures of different exposed facets of Pt NPs, which lead to the disparity of active sites and adsorption energies in photocatalytic reactions.

引用

页码：19457 / 19463

页数：7

共 51 条

[1]

Enhanced visible light photocatalytic H2-production of g-C3N4/WS2 composite heterostructures [J].