TY - INPR N2 - Electrochemical carbon dioxide reduction reaction (ECO2RR) is a promising approach to synthesize fuels and value-added chemical feedstocks while reducing atmospheric CO2 levels. Here, high surface area cerium and sulfur-doped hierarchical bismuth oxide nanosheets (Ce@S-Bi2O3) are develpoed by a solvothermal method. The resulting Ce@S-Bi2O3 electrocatalyst shows a maximum formate Faradaic efficiency (FE) of 92.5% and a current density of 42.09 mA cm?2 at ?1.16 V versus RHE using a traditional H-cell system. Furthermore, using a three-chamber gas diffusion electrode (GDE) reactor, a maximum formate FE of 85% is achieved in a wide range of applied potentials (?0.86 to ?1.36 V vs RHE) using Ce@S-Bi2O3. The density functional theory (DFT) results show that doping of Ce and S in Bi2O3 enhances formate production by weakening the OH* and H* species. Moreover, DFT calculations reveal that *OCHO is a dominant pathway on Ce@S-Bi2O3 that leads to efficient formate production. This study opens up new avenues for designing metal and element-doped electrocatalysts to improve the catalytic activity and selectivity for ECO2RR. ID - discovery10197355 UR - http://dx.doi.org/10.1002/smll.202400913 EP - 12 Y1 - 2024/06/07/ SN - 1613-6810 TI - Surface Area-Enhanced Cerium and Sulfur-Modified Hierarchical Bismuth Oxide Nanosheets for Electrochemical Carbon Dioxide Reduction to Formate AV - restricted JF - Small PB - WILEY-V C H VERLAG GMBH A1 - Palanimuthu, Naveenkumar A1 - Subramaniam, Mohan Raj A1 - Austeria P, Muthu A1 - Sharma, Preetam Kumar A1 - Ramalingam, Vinoth A1 - Peramaiah, Karthik A1 - Ramakrishnan, Shanmugam A1 - Gu, Geun Ho A1 - Yu, Eileen Hao A1 - Yoo, Dong Jin KW - Bismuth oxide; density functional theory; electrochemical CO2 reduction; formate; surface area N1 - This version is the author accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions. ER -