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Issue 73, 2018
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C-doping into h-BN at low annealing temperature by alkaline earth metal borate for photoredox activity

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Abstract

BCN (boron carbon nitride) nanosheets are promising photocatalyst materials for solar fuel production by visible light-driven water splitting and CO2 reduction due to their tunable band gap and unique properties. C-doping into h-BN by thermal annealing makes possible the preparation of BCN nanosheets with photocatalytic activity under visible light irradiation, but it generally requires a very high temperature (>1250 °C) from the thermodynamic viewpoint. Here, we report a new method to prepare BCN nanosheets with visible light-photocatalytic activity at lower annealing temperature (1000 °C) than equilibrium by adding alkaline earth metal compounds. BCN nanosheets formed in borate melt show a clear layered structure, tunable bandgap and photocatalytic activity for water splitting and CO2 reduction under visible light illumination. This provides a direction for doping other elements into h-BN at low annealing temperature by alkaline earth metal borates.

Graphical abstract: C-doping into h-BN at low annealing temperature by alkaline earth metal borate for photoredox activity

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Supplementary files

Article information


Submitted
12 Sep 2018
Accepted
21 Nov 2018
First published
18 Dec 2018

This article is Open Access

RSC Adv., 2018,8, 42109-42115
Article type
Paper

C-doping into h-BN at low annealing temperature by alkaline earth metal borate for photoredox activity

M. Ri, K. Choe, K. Kim, Y. Gao and Z. Tang, RSC Adv., 2018, 8, 42109
DOI: 10.1039/C8RA07583B

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    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
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    [Original citation] - Published by The Royal Society of Chemistry.

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