由N,B原子调节的铜集群用于增强的CO2电还原以形成N,B原子
Yuying Zhao1, Shengchun Hu2, Qixin Yuan3
1Key Lab. of Biomass Energy and Material, Jiangsu Province; National Engineering Lab for Biomass Chemical Utilization; Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing 210042, China; Shandong Provincial Key Laboratory of Biomass Gasification Technology, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China; School of Chemical Sciences, The University of Auckland, Auckland 1010, New Zealand.
Journal of colloid and interface science
|September 10, 2024
概括
这项研究引入了一种新型的催化剂,用于使用可再生能源发电将二氧化碳 (CO2) 转化为酸盐. 增强的铜基催化剂在二氧化碳利用方面表现出高效率和稳定性.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
背景情况:
- 电化学二氧化碳转化为可再生能源储能和二氧化碳利用提供了一条途径.
- 基于铜的催化剂通常会产生二氧化碳,从而限制了酸盐的生产.
- 开发选择性催化剂对于高效的二氧化碳利用至关重要.
研究的目的:
- 开发一种高度选择性的催化剂,用于电化学二氧化碳减排以形成.
- 调查B,N共碳和Zn2+在提高催化剂性能方面的作用.
- 了解改善格式选择性背后的机制.
主要方法:
- 使用Zn2+离子制造与B,N联合合碳 (Cu/BN-C) 集成的Cu集群.
- 二氧化碳还原反应的电化学表征.
- 密度函数理论 (DFT) 计算以阐明催化机制.
主要成果:
- /BN-C催化剂实现了高达70%的法拉第效率 (FE),用于成型生产.
- 部分电流密度 (j格式) 超过20.8 mA cm-2 在-1.0 V 与 RHE.
- 在12小时内保持了高性能,超过了其他催化剂.
结论:
- 在多孔碳矩阵中的Cu集群和N,B原子之间的协同效应增强了电荷转移和形式选择性.
- 催化剂显示出有效将二氧化碳转化为有价值物质的巨大潜力.
- DFT计算证实了HCOO*中间体的优先吸附,有利于形形成.
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