Yang Guanghui, Song Jiale, Li Xinmiao, Deng Kai, Yu Hongjie, Xu You, Wang Hongjing, Wang Ziqiang, Wang Liang
Zhejiang University of Technology, No. 18 Chaowang Road, Hangzhou, 310014, CHINA.
Zhejiang University of Technology, No. 18 Chaowang Road, Hangzhou, Hangzhou, 310014, CHINA.
Nanotechnology. 2024 Dec 5. doi: 10.1088/1361-6528/ad9aad.
Electrocatalytic nitrogen reduction reaction (NRR) is a prospective tactics for ammonia synthesis. However, the development of highly active NRR electrocatalysts is still challenging owing to the difficult activation of nitrogen and competitive hydrogen evolution reaction (HER). Here, we synthesized boron-doped AuRh mesoporous nanotubes (B-AuRh MNTs) via dual-template method coupled with boron doping. The mesoporous nanotube structure has high specific surface area and excellent surface permeability. Thereby, the B-AuRh MNTs exhibit NH3 yield of 13.3 μg h-1 mg-1cat and Faraday efficiency of 22.5% under 0.1 M Na2SO4. The doping of boron with weak hydrogen adsorption can generate electronic effect, thus stimulating the activation of N2 molecules and effectively inhibiting HER. This study proposes a universal method for the preparation of boron-doped Pd-based catalysts, which is beneficial to improve the NRR performance.
.
电催化氮还原反应（NRR）是一种有前景的合成氨策略。然而，由于氮的活化困难以及竞争性析氢反应（HER），开发高活性的NRR电催化剂仍然具有挑战性。在此，我们通过双模板法结合硼掺杂合成了硼掺杂的金铑介孔纳米管（B-AuRh MNTs）。介孔纳米管结构具有高比表面积和优异的表面渗透性。因此，在0.1 M Na2SO4条件下，B-AuRh MNTs的NH3产率为13.3 μg h-1 mg-1cat，法拉第效率为22.5%。具有弱氢吸附的硼掺杂可以产生电子效应，从而促进N2分子的活化并有效抑制HER。本研究提出了一种制备硼掺杂钯基催化剂的通用方法，这有利于提高NRR性能。
