Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 288, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2021.119979
Keywords
Sn-In alloy; Tin oxide; CO2 reduction; Operando XANES; Operando Raman spectroscopy
Funding
- National Natural Science Foundation of China [U2032151, 21773224]
- National Key R&D Program of China [2018YFB1502600]
- Fundamental Research Funds for Central Universities (SCUT) [2019ZD22]
Ask authors/readers for more resources
This study demonstrates the synthesis of stable Sn-In alloy nanoparticles for efficient formate production in electrochemical CO2 reduction. Operando X-ray absorption and Raman spectroscopy confirm the stability of the In-doped tin oxide shell under CO2R conditions.
SnO2 has been recognized as excellent catalyst towards formate production from electrochemical CO2 reduction (CO2R). However, it is a great challenge to prepare SnO2 that is stable under the working condition of CO2R and the active center of the SnO2-based catalyst towards CO2R has been illusive. In this work, Sn-In alloy nanoparticles display an InSn4 intermetallic core and an amorphous In-doped tin oxide shell and a CO2-to-formate faradaic efficiency of 94% and a current density of 236 mA cm(-2) was achieved at 0.98 V. Operando X-ray absorption and Raman spectroscopy reveal that the In-doped tin oxide shell remains stable under CO2R condition. Density functional theory calculations indicate that the In-doped tin oxide results in the formation of oxygen vacancy, stabilized tin oxide shell and exergonic pathway for CO2-to-formate, which might account for the high performance of the catalysts towards CO2R.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available