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Oxygen vacancy-rich MoO3−x nanobelts for photocatalytic N2 reduction to NH3 in pure water

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Abstract

Photocatalytic nitrogen fixation is a promising sustainable and green strategy for NH3 synthesis. The development of an efficient photocatalyst is the key to make this approach applicable. In this work, MoO3−x nanobelts are synthesized by a hydrothermal method, and they are firstly utilized as photocatalysts for N2 fixation without using sacrificial reagents and precious-metal co-catalysts at room temperature and atmospheric pressure. It is found that oxygen vacancies (OVS) are located on the (001) and (100) planes by STEM analysis. The surface OVS can chemisorb the N2 molecules by a side-on model on (001) while an end-on model on the (100) plane and elongate their bond length, playing a critical role in the photocatalytic N2 fixation activity. This result provides a new insight into developing efficient photocatalysts with original oxygen vacancies.

Graphical abstract: Oxygen vacancy-rich MoO3−x nanobelts for photocatalytic N2 reduction to NH3 in pure water

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Publication details

The article was received on 17 Nov 2018, accepted on 10 Jan 2019 and first published on 10 Jan 2019


Article type: Paper
DOI: 10.1039/C8CY02357C
Citation: Catal. Sci. Technol., 2019, Advance Article
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    Oxygen vacancy-rich MoO3−x nanobelts for photocatalytic N2 reduction to NH3 in pure water

    Y. Li, X. Chen, M. Zhang, Y. Zhu, W. Ren, Z. Mei, M. Gu and F. Pan, Catal. Sci. Technol., 2019, Advance Article , DOI: 10.1039/C8CY02357C

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