Anchoring Au nanoparticles on Bi ultrathin nanosheets for use as an efficient heterogeneous catalyst for ambient-condition electrochemical ammonia synthesis

Literature Information

Publication Date 2020-07-01
DOI 10.1039/D0SE00764A
Impact Factor 6.367
Authors

You Xu, Tianlun Ren, Shanshan Yu, Kaili Ren, Mingzhen Wang, Ziqiang Wang, Xiaonian Li, Liang Wang, Hongjing Wang


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Abstract

The electrochemical nitrogen reduction reaction (NRR) represents an emerging alternative for realizing ammonia (NH3) synthesis from earth-abundant N2 under ambient conditions. In this work, we describe the fabrication of a two-component heterogeneous composite composed of Au nanoparticles anchored on Bi nanosheets (denoted as Au/Bi NSs) and demonstrate their efficient performance for NRR electrocatalysis. The Au/Bi NSs are readily obtained by in situ electrochemical conversion of the pre-synthesized composite precursors composed of Au nanoparticles anchored on BiOCl nanoplates. Benefitting from the synergistic effect of Bi and Au components, the resultant Au/Bi NSs exhibit efficient NRR electrocatalytic activity in N2-saturated 0.1 M HCl solution, achieving a NH3 yield rate of 20.39 μg h−1 mgcat.−1 and a faradaic efficiency of 15.53% at −0.3 V (vs. the reversible hydrogen electrode). This research may motivate further study of electrocatalytic N2-to-NH3 conversion and open up new opportunities for the synthesis of other heterogeneous catalysts.

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Source Journal

Sustainable Energy & Fuels

Sustainable Energy & Fuels
CiteScore: 0
Self-citation Rate: 0%
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