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Issue 26, 2020
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The in-built bionic “MoFe cofactor” in Fe-doped two-dimensional MoTe2 nanosheets for boosting the photocatalytic nitrogen reduction performance

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Abstract

In biological nitrogen fixation systems, the MoFe cofactor of nitrogenase plays a crucial role in enhancing the activation of dinitrogen to drive the nitrogen reduction reaction. However, the development of effective bionic inorganic photocatalysts still remains a great challenge and the photocatalytic system of both Mo- and Fe-based semiconductors for nitrogen reduction is rarely studied. In this work, a novel photocatalytic nitrogen reduction bionic system based on Fe-doped two-dimensional MoTe2 nanosheets has been proposed. The bionic “MoFe cofactor” formed by introducing iron into MoTe2 can effectively facilitate the transport and separation of photo-generated charge carriers by one-electron and two-electron redox reactions and 15 times longer photocarrier lifetime. As a result, the photocatalytic nitrogen reduction activity of Fe-doped MoTe2 is obviously boosted, which is about 11-fold higher in comparison to that of pure MoTe2. The presented work provides an effective route to design novel bionic Mo–Fe inorganic two-dimensional semiconductor photocatalysts for nitrogen reduction.

Graphical abstract: The in-built bionic “MoFe cofactor” in Fe-doped two-dimensional MoTe2 nanosheets for boosting the photocatalytic nitrogen reduction performance

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Supplementary files

Article information


Submitted
21 Apr 2020
Accepted
28 May 2020
First published
28 May 2020

J. Mater. Chem. A, 2020,8, 13038-13048
Article type
Paper

The in-built bionic “MoFe cofactor” in Fe-doped two-dimensional MoTe2 nanosheets for boosting the photocatalytic nitrogen reduction performance

H. Li, S. Gu, Z. Sun, F. Guo, Y. Xie, B. Tao, X. He, W. Zhang and H. Chang, J. Mater. Chem. A, 2020, 8, 13038
DOI: 10.1039/D0TA04251J

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