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Fe, Mo–N/C Hollow Porous Nitrogen-Doped Carbon Nanorods as an Effective Electrocatalyst for N2 Reduction Reaction

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journal contribution
posted on 14.10.2020, 15:10 by Wen Ye, Yongsheng Yang, Muhammad Arif, Shiyu Yang, Xiaoyu Fang, Muhammad Asim Mushtaq, Xuebo Chen, Dongpeng Yan
The development of highly active, non-noble metal-based materials for electrocatalytic nitrogen reduction reaction (NRR) under environmental conditions is still a challenge. Herein, we have designed novel Fe, Mo–N/C hollow porous nitrogen-doped carbon nanorods as an effective catalyst for N2 fixation by means of the pyrolysis–acid etching process. A high ammonia (NH3) formation rate (1.52 × 10–6 mol h–1 cm–2) and Faradaic efficiency (FE, 14.2%) at −0.1 V versus RHE are obtained for NRR in 0.1 M Na2SO4 solution. Fe–Nχ and Mo–Nχ units simultaneously serve as catalytic sites for promoting ammonia synthesis, and the concentration of pyridinic N is also essential for the enhanced ammonia production and FE. Therefore, this study accomplishes superior electrocatalytic performance of the Fe, Mo–N/C hollow nanorods toward NRR in ammonia synthesis application.