嵌入式CuS/TiO2双功能光催化剂,用于同步生产和胺转化
Jianan Liu1, Xuemeng Sun1, Yuying Fan1
1Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|October 24, 2023
概括
这项研究提出了一种新的CuS/TiO2 Z方案异构连接,用于增强光催化生产和胺氧化. 该材料表现出优越的双功能活性,没有贵金属.
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
- 异质连接工程 异质连接工程
背景情况:
- 对于生产和选择性氧化而言,双功能的光催化是具有挑战性的.
- Z模式异质连接提供了一种改善光催化剂活性的策略.
- 在没有贵金属的情况下开发高效的光催化剂至关重要.
研究的目的:
- 为了构建一个p-n类型的直接Z模式异质连接CuS/TiO2.2.
- 为了研究CuS/TiO2异质连接中的载体转移机制.
- 评估CuS/TiO2对进化和胺氧化的双功能光催化性能.
主要方法:
- 使用MOF衍生的TiO2.2,合成CuS/TiO2异质连接.
- 通过Mott-Schottky分析在光刺激下测量载体密度.
- 对H2进化和N-基基胺 (NBB) 生产的光催化活性的评估.
主要成果:
- CuS/TiO2异质连接表现出由载体度差异驱动的直接Z模式电子转移模式.
- CuS/TiO2 显示出显著增强的 H2 演化活性 (17.1-29.5 倍高于单个成分).
- 显著提高了N-基基胺 (NBB) 的产量 (14.3-47.4倍高于单个成分).
结论:
- 构建的CuS/TiO2 p-n类型的直接Z模式异质连接有效地增强了双功能光催化活性.
- 在CuS/TiO2中高效的电荷分离和转移,在生产和选择性氧化中都带来了卓越的性能.
- 开发的材料显示了作为一种不含贵金属的光催化剂的承诺,用于可持续的化学合成.
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