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A perovskite La2Ti2O7 nanosheet as an efficient electrocatalyst for artificial N2 fixation to NH3 in acidic media

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Abstract

The synthesis of NH3 heavily relies on the Haber–Bosch process suffering from a large amount of CO2 emission and energy consumption. Possessing eco-friendly and sustainable characteristics, electrochemical reduction is considered as a promising candidate for artificial N2 fixation under ambient conditions, but efficient electrocatalysts are crucial for the N2 reduction reaction (NRR). In this communication, we report that perovskite La2Ti2O7 nanosheets behave as an efficient NRR electrocatalyst with excellent selectivity under ambient conditions. In 0.1 M HCl, this catalyst achieves a high NH3 yield rate of 25.15 μg h−1 mgcat.−1 with a faradaic efficiency of 4.55% at −0.55 V vs. a reversible hydrogen electrode. Notably, it also shows high electrochemical stability.

Graphical abstract: A perovskite La2Ti2O7 nanosheet as an efficient electrocatalyst for artificial N2 fixation to NH3 in acidic media

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Publication details

The article was received on 25 Mar 2019, accepted on 09 May 2019 and first published on 09 May 2019


Article type: Communication
DOI: 10.1039/C9CC02310K
Chem. Commun., 2019, Advance Article

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    A perovskite La2Ti2O7 nanosheet as an efficient electrocatalyst for artificial N2 fixation to NH3 in acidic media

    J. Yu, C. Li, B. Li, X. Zhu, R. Zhang, L. Ji, D. Tang, A. M. Asiri, X. Sun, Q. Li, S. Liu and Y. Luo, Chem. Commun., 2019, Advance Article , DOI: 10.1039/C9CC02310K

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