构建Ni2P-NiS装饰TiO2的双催化剂,以促进光催化H2的进化
1School of Chemical Engineering/Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi' an 710069, P. R. China.
Langmuir : the ACS journal of surfaces and colloids
|November 10, 2023
概括
在TiO2纳米片上使用Ni2P-NiS的双催化剂显著提高了光催化的产生. 这种协同方法增强了电荷分离和水吸附,以有效地产生H2.
科学领域:
- 材料科学 材料科学 材料科学
- 光催化作用的光催化
- 可再生能源可再生能源是可再生能源.
背景情况:
- 催化剂优化了光催化过程中的载体分离.
- 双催化剂为增强光催化 (H2) 生产提供了协同效益.
- 研究双催化剂效应对于推进H2生产技术至关重要.
研究的目的:
- 为了制造双催化剂Ni2P-NiS修饰的TiO2纳米片.
- 研究Ni2P-NiS作为光催化H2生产的双共催化剂的协同作用.
- 阐明增强H2生产背后的机制.
主要方法:
- 用于制造Ni2P-NiS/TiO2纳米片的溶剂蒸发方法.
- 材料属性的表征,包括光吸收和水接触角度.
- 用于测量H2生产速度的光催化活性测试.
主要成果:
- Ni2P-NiS/TiO2表现出增强的光吸收和降低的水接触角度.
- 双催化剂降低了H2进化过量的潜力,并增加了电化学活性表面积.
- 15%的Ni2P-NiS/TiO2实现了4891.6μmol·g-1·h-1的H2生产率,显著超过单个催化剂和纯TiO2.
结论:
- Ni2P-NiS双催化剂的协同效应显著增强了光催化H2的产生.
- 在Ni2P-NiS/TiO2接口上的Schottky屏障效应促进了电荷的分离和转移.
- 这项研究提出了一个有前途的战略,用于开发高效的双催化剂半导体系统,用于生成H2.
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