Surface oxidized two-dimensional antimonene nanosheets for electrochemical ammonia synthesis under ambient conditions

Munkhjargal Bat-Erdene; Guangrui Xu; Munkhbayar Batmunkh; Abdulaziz S. R. Bati; Jessica J. White; Md J. Nine; Dusan Losic; Yu Chen; Yun Wang; Tianyi Ma; Joseph G. Shapter

doi:10.1039/C9TA13485A

Surface oxidized two-dimensional antimonene nanosheets for electrochemical ammonia synthesis under ambient conditions†

Munkhjargal Bat-Erdene,

‡^a Guangrui Xu,‡^bc Munkhbayar Batmunkh,

^ad Abdulaziz S. R. Bati,

^a Jessica J. White,^d Md J. Nine,

^e Dusan Losic,

^e Yu Chen,

^c Yun Wang,

^d Tianyi Ma

^b and Joseph G. Shapter

*^a

Author affiliations

* Corresponding authors

^a Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland 4072, Australia
E-mail: j.shapter@uq.edu.au

^b Discipline of Chemistry, School of Environmental and Life Sciences, The University of Newcastle (UON), Callaghan, New South Wales 2308, Australia

^c Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), Shaanxi Key Laboratory for Advanced Energy Devices, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710062, PR China

^d Centre for Clean Environment and Energy, School of Environment and Science, Griffith University, Gold Coast, Queensland 4222, Australia

^e School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia

Abstract

Two-dimensional (2D) antimonene nanosheets are prepared using a combination of ball milling and sonication-based liquid exfoliation and are used as an efficient electrocatalyst for the nitrogen reduction reaction (NRR). In 0.1 M KOH, a high NH₃ yield of 180.4 μg h⁻¹ mg_CAT⁻¹ and faradaic efficiency (FE) of 11.6% are achieved using our antimonene nanosheets. Theoretical calculations suggest that the oxidized species of antimonene act as the active catalytic sites for the NRR process. This work opens up a new avenue towards the development of 2D electrocatalysts for clean energy.

This article is part of the themed collections: Journal of Materials Chemistry A HOT Papers and 2020 Journal of Materials Chemistry A most popular articles

Journal of Materials Chemistry A

Surface oxidized two-dimensional antimonene nanosheets for electrochemical ammonia synthesis under ambient conditions†

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Surface oxidized two-dimensional antimonene nanosheets for electrochemical ammonia synthesis under ambient conditions

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