J. Mater. Chem. A - In-Situ Construction of Crystalline/Amorphous Interface in SnO2/Bi Nanobelts for Efficient CO2 Electroreduction
Hanjun Li, Guangtong Hai*, Zhenyu Wang, Xin Chen, Shuxing Bai, Nan Zhang*, Tianxi Liu*
J. Mater. Chem. A 2025, DOI: 10.1039/D5TA00024F
The in situ electrochemical construction of materials is crucial for accurately identifying active sites, elucidating reaction mechanisms, and strategically developing catalysts. Herein, crystalline/amorphous (C/A)-SnO2/Bi nanobelts (NBs) with abundant C/A interfaces were prepared via an in situ electrochemical dynamic reconstruction strategy using the C/A-SnO2/BiOCl NBs as pre-catalysts. Impressively, compared with crystalline/crystalline SnO2/Bi (C/C-SnO2/Bi) and SnO2, the C/A-SnO2/Bi NBs exhibited prominent activity and excellent long-term stability with a considerable faradaic efficiency (FE) for HCOOH (FEHCOOH) and an HCOOH yield of up to 96.4% and 0.1 mmol cm-2 h-1 at −1.3 V vs. reversible hydrogen electrode (RHE) during the electrochemical CO2 reduction reaction (CO2RR). Moreover, FEHCOOH reached 81.2% at 400 mA cm-2 in the flow cell. The C/A interfaces induced electron transportation and charge redistribution, which contributed to the intermediate adsorption and electron transfer during the CO2RR process. This work highlights the crucial role of pre-catalyst reconstruction and presents a novel approach for utilizing C/A interface engineering in the CO2RR.
Link: https://doi.org/10.1039/D5TA00024F
