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Issue 26, 2020
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Vertically aligned 2D carbon doped boron nitride nanofilms for photoelectrochemical water oxidation

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Abstract

Metal-free photocatalysis has evoked broad research interest in green energy applications. Herein, two-dimensional (2D) carbon-doped BN (C-BN) nanosheets are vertically aligned on a conductive substrate by low-temperature plasma enhanced chemical vapor deposition (PE-CVD) and are demonstrated to be a photoelectrocatalytic device for water oxidation under sunlight irradiation. By virtue of this geometry, the unique 2D material presents advantages for the catalytic reaction. In addition, adjusting the carbon concentration can facilely control the structure and optoelectronic properties of the C-BN nanosheets to improve light harvesting in the solar spectrum. As a result, the photocurrent density exhibits a 60-fold enhancement over that of the C-BN films achieved by traditional deposition of C-BN powder. Experimental and theoretical studies of band structures are performed and the results are in agreement with each other. This 2D C-BN nanofilm based device could stimulate interest in advanced applications in many fields such as catalysis, sensors, transistors and others.

Graphical abstract: Vertically aligned 2D carbon doped boron nitride nanofilms for photoelectrochemical water oxidation

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Supplementary files

Article information


Submitted
02 May 2020
Accepted
18 Jun 2020
First published
18 Jun 2020

J. Mater. Chem. A, 2020,8, 13059-13064
Article type
Paper

Vertically aligned 2D carbon doped boron nitride nanofilms for photoelectrochemical water oxidation

Y. Fang, I. S. Merenkov, X. Li, J. Xu, S. Lin, M. L. Kosinova and X. Wang, J. Mater. Chem. A, 2020, 8, 13059
DOI: 10.1039/D0TA04593D

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