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Issue 18, 2020
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Engineering Mo/Mo2C/MoC hetero-interfaces for enhanced electrocatalytic nitrogen reduction

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Abstract

The development of efficient and cost-effective electrocatalysts is essential for the electrochemical reduction of N2 to produce NH3 under ambient conditions. Herein, various well-dispersed Mo-based nanoparticles are selectively synthesized to reveal the influences of the compositions and hetero-interfaces on the performance for the N2 reduction reaction (NRR). Systematic experiments discovered that compared with single-component Mo2C or Mo nanoparticles, the heterostructured binary MoC/Mo2C and ternary Mo/MoC/Mo2C nanoparticles exhibit significantly enhanced NRR performance by creating abundant hetero-interfaces. Moreover, theoretical calculations reveal that the integration of metallic Mo with MoC/Mo2C appreciably reduces the energy demand for NH3 desorption, contributing to the enhanced NRR process. As a result, a remarkable NH3 yield rate of up to 20.4 μg h−1 mg−1 and a FE up to 18.9% can be achieved. These findings suggest that engineering crystalline phases and hetero-interfaces represents a new avenue for advancing the electrocatalytic performance of a NRR catalyst.

Graphical abstract: Engineering Mo/Mo2C/MoC hetero-interfaces for enhanced electrocatalytic nitrogen reduction

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Supplementary files

Article information


Submitted
23 Mar 2020
Accepted
06 Apr 2020
First published
07 Apr 2020

J. Mater. Chem. A, 2020,8, 8920-8926
Article type
Paper

Engineering Mo/Mo2C/MoC hetero-interfaces for enhanced electrocatalytic nitrogen reduction

Y. Liu, X. Zhu, Q. Zhang, T. Tang, Y. Zhang, L. Gu, Y. Li, J. Bao, Z. Dai and J. Hu, J. Mater. Chem. A, 2020, 8, 8920
DOI: 10.1039/D0TA03290E

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