源自金属有机框架的Sn(101)用于高效电催化还原CO

Sn(101) Derived from Metal-Organic Frameworks for Efficient Electrocatalytic Reduction of CO.

作者信息

Wu Jian-Xiang, Zhu Xiao-Rong, Liang Ting, Zhang Xiang-Da, Hou Shu-Zhen, Xu Ming, Li Ya-Fei, Gu Zhi-Yuan

机构信息

Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, Jiangsu 210023, P. R. China.

Orthopaedic Institute, Medical College, Soochow University, Suzhou, Jiangsu 215006, P. R. China.

出版信息

Inorg Chem. 2021 Jul 5;60(13):9653-9659. doi: 10.1021/acs.inorgchem.1c00946. Epub 2021 Jun 16.

DOI:10.1021/acs.inorgchem.1c00946

PMID:34133150

Abstract

The synthesis of a specific Sn plane as an efficient electrocatalyst for CO electrochemical reduction to generate fuels and chemicals is still a huge challenge. Density functional theory (DFT) calculations first reveal that the Sn(101) crystal plane is more advantageous for CO electroreduction. A metal-organic framework (MOF) precursor Sn-MOF has been carbonized and then etched to successfully fabricate Sn(101)/SnO/C composites with good control of the carbonization time and the concentration of hydrochloric acid. The Sn(101) crystal plane of the catalyst could enhance the faradaic efficiency of formate to as high as 93.3% and catalytic stability up to 20 h. The promotion of the selectivity and activity by Sn(101) advances new possibilities for the rational design of high-activity Sn catalysts derived from MOFs.

摘要

合成一种特定的锡平面作为将CO电化学还原以生成燃料和化学品的高效电催化剂仍然是一个巨大的挑战。密度泛函理论（DFT）计算首先表明，Sn(101)晶面对于CO电还原更具优势。一种金属有机框架（MOF）前驱体Sn-MOF经过碳化然后蚀刻，成功制备出了Sn(101)/SnO/C复合材料，同时很好地控制了碳化时间和盐酸浓度。该催化剂的Sn(101)晶面可将甲酸盐的法拉第效率提高至高达93.3%，催化稳定性长达20小时。Sn(101)对选择性和活性的促进为合理设计源自MOF的高活性Sn催化剂带来了新的可能性。