一个强大的n-n异质连接:CuN和BN促进环境电催化降解为氨
Jiameng Liu1, Linghao He1, Shuangrun Zhao1
1College of Material and Chemical Engineering, Institute of New Energy Science and Technology, Zhengzhou University of Light Industry, Zhengzhou, 450001, China.
Small (Weinheim an der Bergstrasse, Germany)
|June 15, 2023
概括
使用导电金属有机框架 (MOF) 和六角化 (h-BN) 开发了一种新的电催化剂Cu3(HITP) 2@h-BN,用于电催化还原反应 (eNRR). 这种催化剂显示出增强的氨产量和法拉第效率.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 催化剂是一种催化剂.
背景情况:
- 电催化降解反应 (eNRR) 对于可持续的氨合成至关重要.
- 开发效率高,稳定的电催化剂对eNRR仍然是一个重大挑战.
- 金属有机框架 (MOF) 为催化应用提供可调节的结构.
研究的目的:
- 为了合成和描述一种新型的n-n型异质连接电催化剂,用于NNRR.
- 为了研究Cu-N和B-N在异质连接中的双重活性位点的协同效应.
- 为了阐明由设计的电催化剂催化氨生产的机制.
主要方法:
- 在六角化 (h-BN) 纳米片上,导电MOF [Cu3(HITP) 2的现场生长.
- 对ENRR的电催化性能评估,包括氨产量率和法拉第效率.
- 在现场FT-IR光谱和密度函数理论 (DFT) 计算以研究反应机制.
主要成果:
- 合成的Cu3 ((HITP) 2@h-BN表现出卓越的eNRR性能.
- 实现了146.2μg h-1 mgcat-1的氨生产率和42.5%的法拉第效率.
- 该n-n异质连接结构促进了电荷转移,并优化了活性位点.
结论:
- Cu3 ((HITP) 2@h-BN异质连接是 eNRR 的一个有前途的电催化剂.
- 双重活性位点的协同效应和异质结结构是提高性能的关键.
- 这项工作为设计使用导电MOF的先进电催化剂提供了新的策略.
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