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Surface Oxygen Injection in Tin Disulfide Nanosheets for Efficient CO2 Electroreduction to Formate and Syngas by Tao Chen; Tong Liu; Tao Ding; Beibei Pang; Lan Wang; Xiaokang Liu; Xinyi Shen; Sicong Wang; Dan Wu; Dong Liu; Linlin Cao; Qiquan Luo; Wei Zhang; Wenkun Zhu; Tao Yao is a Engineering article available to read on EtoBox.
What is Surface Oxygen Injection in Tin Disulfide Nanosheets for Efficient CO2 Electroreduction to Formate and Syngas about?
## Abstract Surface chemistry modification represents a promising strategy to tailor the adsorption and activation of reaction intermediates for enhancing activity. Herein, we designed a surface oxygen-injection strategy to tune the electronic structure of SnS~2~ nanosheets, which showed effectively enhanced electrocatalytic activity and selectivity of CO~2~ reduction to formate and syngas (CO and H~2~). The oxygen-injection SnS~2~ nanosheets exhibit a remarkable Faradaic efficiency of 91.6% for carbonaceous products with a current density of 24.1 mA cm^−2^ at −0.9 V vs RHE, including 83.2% for formate production and 16.5% for syngas with the CO/H~2~ ratio of 1:1. By operando X-ray absorption spectroscopy, we unravel the in situ surface oxygen doping into the matrix during reaction, thereby optimizing the Sn local electronic states. Operando synchrotron radiation infrared spectroscopy along with theoretical calculations further reveals that the surface oxygen doping facilitated the CO~2~ activation and enhanced the affinity for HCOO\* species. This result demonstrates the potential strategy of surface oxygen injection for the rational design of advanced catalysts for CO~2~ electror
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- Author
- Tao Chen; Tong Liu; Tao Ding; Beibei Pang; Lan Wang; Xiaokang Liu; Xinyi Shen; Sicong Wang; Dan Wu; Dong Liu; Linlin Cao; Qiquan Luo; Wei Zhang; Wenkun Zhu; Tao Yao
- Publisher
- Springer Science and Business Media LLC
- Published
- 2021
- Language
- EN
- Field
- Engineering (Physical Sciences)