锡
光催化
材料科学
纳米颗粒
化学工程
肖特基势垒
纳米技术
等离子体子
催化作用
化学
光电子学
有机化学
冶金
二极管
工程类
作者
Waqar Ahmad Qureshi,Xiaoyang Hong,Xudong He,Qinqin Liu,Dongdong Xu,Chanez Maouche,Zhongti Sun,Juan Yang
出处
期刊:Chemosphere
[Elsevier]
日期:2022-03-01
卷期号:291: 132987-132987
被引量:20
标识
DOI:10.1016/j.chemosphere.2021.132987
摘要
Employing a suitable cocatalyst is very important to improve photocatalytic H2 evolution activity. Herein, two plasmonic cocatalysts, Au nanoparticles and TiN nanoparticles were in-situ coupled over the g-C3N4 nanotube to form a ternary 0D/0D/1D Au/TiN/g-C3N4 composite via a successive thermal polycondensation and chemical reduction method. The g-C3N4 nanotube acted as a support for the growth of Au and TiN nanoparticles, leading to intimate contact between g-C3N4 nanotube with Au nanoparticles and TiN nanoparticles. As a result, multiple interfaces and dual-junctions of Au/g-C3N4 Schottky-junction and TiN/g-C3N4 ohmic-junction were constructed, which helped to promote the charged carriers' separation and enhanced the photocatalytic performance. Furthermore, loading plasmonic cocatalysts of Au nanoparticles and TiN nanoparticles can enhance the light absorption capacity. Consequently, the Au/TiN/g-C3N4 composite exhibited significantly enhanced photocatalytic H2 evolution activity (596 μmol g-1 h-1) compared to g-C3N4 or binary composites of Au/g-C3N4 and TiN/g-C3N4. This work highlights the significant role of cocatalysts in photocatalysis.
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