Zhang Yu, Cao Shihai, Liang Chu, Shen Jiaming, Chen Yeqing, Feng Yanchao, Chen Huan, Liu Rui, Jiang Fang
Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China.
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China.
J Colloid Interface Sci. 2021 Jul;593:335-344. doi: 10.1016/j.jcis.2021.02.106. Epub 2021 Mar 9.
The Haber-Bosch N fixation method suffers from the power-consuming and harsh conditions. In contrast, the electrochemical conversion of N (NRR) at room temperature and atmospheric pressure is considered a promising alternative route. In this study, we synthesized Sb-modified with BiFeO (BFSO/BFO) by using one-step hydrothermal treatment. The BFSO/BFO catalyst has higher selectivity to NRR than BiFeO (BFO) under the same applied voltage. Such large interfacial interaction area plays a critical role in transfer electron and enhances the density of current. The resulting BFSO/BFO heterojunction showed significant electrocatalytic activity under controllable voltage, which exhibited favorable average ammonia (NH) yield as high as 2.62 μg·h·cm at -0.2 V versus RHE. Moreover, the stability of the BFSO/BFO composite was evaluated for six cycles and the results were desirable. This study provides a new insight into the design of composite catalysts using BFO, which has high activity and selectivity toward NRR.
