Efficient electrocatalytic CO2 conversion into formate with AlxBiyOz nanorods in a wide potential window. Issue 23 (26th October 2021)

• Record Type: Journal Article
• Authors: Kuang, Zhaoyu; Peng, Chunlei; Li, Chengjin; Yao, Heliang; Zhou, Xiaoxia; Chen, Hangrong
• Is Part Of: Catalysis science & technology. Volume 11:Issue 23(2021)
• Page Start: 7704
• Page End: 7711
• Publication Date: 2021-10-26
• Subjects: Catalysis -- Periodicals; 541.395
• DOI: 10.1039/d1cy01635k
• Languages: English
• ISSNs: 2044-4753

Abstract

Abstract : Novel kinds of Al x Bi y O z nanorods have been developed for the CO2 RR for the first time, which show high selectivity to formate under a wide potential window and exhibit a maximum faradaic efficiency to formate of 97.5% at −1.19 V vs. RHE. Abstract : Electrocatalytic CO2 conversion into value-added fuels to form a sustainable recycling system is desirable but is still confronted with a problem about the lack of highly active electrocatalysts. Herein, novel Al x Bi y O z nanorods were synthesized by a facile hydrothermal method for the electrochemical CO2 reduction reaction (CO2 RR). The obtained sample exhibits high electrocatalytic activity for CO2 conversion with a faradaic efficiency (FE) of above 90% to formate under a wide potential window from −0.79 V to −1.29 V vs. RHE. Particularly, a FE to formate of up to 97.5% can be achieved at −1.19 V vs. RHE. Furthermore, it shows great stability during the 10 h electrolysis at −0.79 V vs. RHE. It is believed that the introduction of Al species could modulate the electronic configuration of Bi2 O3, together with the enlarged surface area and exposed (2 0 1) crystal plane contributing to the enhanced adsorption and activation capability of CO2, which could mainly account for the high CO2 RR performance.