在强酸中选择性二氧化碳电还原为液体燃料的Bi─O活性站点的诱导电子结构调制
Wei Chen1, Rongzhen Chen1, Yuhang Jiang1
1Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai, 200237, China.
Small (Weinheim an der Bergstrasse, Germany)
|December 14, 2023
概括
添加双催化剂在酸性溶液中有效地将二氧化碳 (CO2) 转化为酸,克服性介质的挑战. 这一进步大大提高了二氧化碳利用率和酸生产效率.
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:
- 中性/性溶液中的碳酸盐形成阻碍了二氧化碳电解效率.
- 双金属催化剂在性/中性介质中显示出对二氧化碳与甲酸 (HCOOH) 选择性的前景.
- 在酸性介质中实现高HCOOH选择性仍然是一个重大挑战.
研究的目的:
- 开发一种有效的催化剂,用于酸性二氧化碳的电解.
- 在酸性环境中增强CO2到酸 (HCOOH) 的选择性和单通转换效率 (SPCE).
- 调查印兴奋剂在改变催化剂结构和活性中的作用.
主要方法:
- (In) 化生物2O2CO3.3.的热水合成
- 在现场的电还原到In-Bi/BiOx纳米片.
- 电化学二氧化碳还原反应 (CO2RR) 试验.
- 在现场拉曼和X射线光电子光谱 (XPS) 分析.
主要成果:
- 优化的内化Bi2O2CO3衍生催化剂在200mA cm-2.2时达到96%的最大HCOOH法拉代效率 (FE).
- 在酸性环境中生产HCOOH的SPCE达到36.6%,显著超过性环境中的催化剂.
- 在兴奋剂中调节了Bi的电子结构,促进了活性Bi-O纳米片的形成.
结论:
- 兴奋剂是一种有效的策略,可以在酸性介质中增强CO2RR催化活性.
- In-Bi/BiOx纳米板催化剂在HCOOH生产方面表现出卓越的性能.
- 这项工作通过酸性电还原为高效的二氧化碳利用提供了途径.
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