Simultaneous facilitation of CO₂adsorption and proton feeding in Bi/Bi₂O₃heterostructure nanosheets for enhanced electroreduction of CO₂to formate in a wide potential window

Abstract

Bi-based materials have emerged as highly efficient catalysts for the electroreduction of CO2 (ERC). However, their practical application is limited by their complex preparation procedures, poor CO2 adsorption, rate-limiting proton...

CuSnBi Catalyst Grown on Copper Foam by Co-Electrodeposition for Efficient Electrochemical Reduction of CO2 to Formate

“…Previous studies have shown that SnO x has a stronger adsorption capacity for *OCHO intermediates than Sn 0 , which promotes formate formation [12,14,20,40]. The Bi-O structure in the Bi composites is more favorable for the selective reduction of CO 2 to formate [8,17,18,41,42]. For example, Wang et al [43] conducted in situ Fourier transform infrared spectroscopy to reveal that metal oxides (SnO 2 and Bi 2 O 3 ) in the catalysts enhanced the adsorption of CO 2 and continuously facilitated the transformation of *OCHO intermediates.…”

Status and challenges for CO2 electroreduction to CH4: advanced catalysts and enhanced strategies

“…63 Moreover, the different components in heterostructures can cause synergistic effects, thus adjusting the adsorption and conversion of critical intermediates and improving the performance. To date, the activity of CO 2 electroreduction into HCOOH (In/In 2 O 3− x , 63 Bi/Bi 2 O 3 64 and Sn/SnO 2 65 ), CO (Cu 2 O/CuO 66 and Ni/Ni 3 ZnC 0.7 67 ) and C 2+ products (Cu 2 O@CuBTC 68 and Cu 2 O/CeO 2 69 ) has been dramatically enhanced via heterostructure construction. Therefore, exploring efficient heterostructures and revealing the underlying reaction mechanism is highly desirable.…”