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Ceria-reduced graphene oxide nanocomposite as an efficient electrocatalyst toward artificial N2 conversion to NH3 under ambient conditions

Abstract

For over a century, NH3 synthesis via the Haber-Bosch process brings huge energy cost and high CO2 emission. Electrochemical N2 reduction reaction is an environmentally-benign alternative, which can be driven by renewable energy. In this work, CeO2 nanoparticles-reduced graphene oxide nanocomposite (CeO2-rGO) behaves as an efficient non-noble-metal N2 reduction reaction electrocatalyst with excellent selectivity. In 0.1 M Na2SO4, CeO2-rGO achieves a high Faradaic efficiency of 4.78% and a large NH3 yield of 16.98 µg h−1 mg−1cat. at –0.7 V vs. reversible hydrogen electrode. The catalytic mechanism was explored by density functional theory calculations.

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Publication details

The article was received on 10 Jul 2019, accepted on 12 Aug 2019 and first published on 13 Aug 2019


Article type: Communication
DOI: 10.1039/C9CC05309C
Chem. Commun., 2019, Accepted Manuscript

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    Ceria-reduced graphene oxide nanocomposite as an efficient electrocatalyst toward artificial N2 conversion to NH3 under ambient conditions

    H. Xie, Q. Geng, X. Li, T. Wang, Y. Luo, A. A. Alshehri, K. A. Alzahrani, B. Li, Z. M. Wang and J. mao, Chem. Commun., 2019, Accepted Manuscript , DOI: 10.1039/C9CC05309C

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