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碳兴奋剂通过II型到S型模式转换调节电荷转移路径,以提高光催化性能

Jing Xu¹, Xueqi Zhang¹, Xudong Chen¹

¹School of Physics and Electronic Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, P. R. China.

Inorganic chemistry

|September 11, 2024

概括

碳兴奋剂将II型MoO2/C3N4异构连接转化为S型C-MoO2/C3N4,增强光催化进化和过氧化合成.

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
表面化学表面化学

背景情况:

设计S模式异质连接是高效光催化剂的关键,但控制电荷传输路径具有挑战性.
第二种类型的异构结构通常在分离光生成载体方面存在局限性.

研究的目的:

开发一种简单的碳注策略,将II型MoO2/C3N4转化为S型异质连接.
调查碳兴奋剂对界面电荷转移和光催化性能的影响.

主要方法:

对MoO2/C3N4异质连接进行碳化.
密度函数理论 (DFT) 的计算.
在现场X射线光电子光谱学 (XPS) 研究.

主要成果:

碳兴奋剂逆转了内部电场的方向,使II型到S型电场的过渡成为可能.
优化的S-方案C-MoO2/C3N4异质连接显示显著增强光催化活性.
实现了 16.2 mmol g-1 h-1 的 H2 演化速率和 877 μmol g-1 h-1 的 H2O2 生产速率.

结论:

碳兴奋剂是一种有效的策略,可以调整电荷传输路径并创建S模式异质连接.
增强的C-MoO2/C3N4异构连接显示了光催化H2进化和H2O2合成的高效率.
这种方法为光催化和光电子学提供了新的可能性.

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