Issue 38, 2014

Hybridization of brookite TiO2 with g-C3N4: a visible-light-driven photocatalyst for As3+ oxidation, MO degradation and water splitting for hydrogen evolution

Abstract

This work gives a first report on the effective visible-light-driven photocatalyst of brookite TiO2 (br-TiO2) hybridized with g-C3N4. This hybrid was prepared via a facile calcination in air. When irradiated under visible light, all br-TiO2/g-C3N4 hybrids showed an activity superior to the component g-C3N4 or br-TiO2 in methyl orange (MO) degradation. The optimum photocatalytic activity of the hybrid br-TiO2/g-C3N4 is higher than those of other types of TiO2 (anatase and rutile) when hybridized with g-C3N4. Furthermore, the optimized hybrid, br-TiO2/g-C3N4 (35 wt%), was successfully applied to toxic As3+ oxidation and water splitting for hydrogen generation under visible light. All these results clearly demonstrate that the hybridization of br-TiO2 with g-C3N4 is highly promising for photocatalytic uses, which are barely accessible in previous literature. This abnormal observation is ascribed to the effective separation of the photo-generated carriers on the surfaces between the closely contacted br-TiO2 and g-C3N4.

Graphical abstract: Hybridization of brookite TiO2 with g-C3N4: a visible-light-driven photocatalyst for As3+ oxidation, MO degradation and water splitting for hydrogen evolution

Supplementary files

Article information

Article type
Paper
Submitted
26 Apr 2014
Accepted
08 Jul 2014
First published
10 Jul 2014

J. Mater. Chem. A, 2014,2, 15774-15780

Author version available

Hybridization of brookite TiO2 with g-C3N4: a visible-light-driven photocatalyst for As3+ oxidation, MO degradation and water splitting for hydrogen evolution

Y. Zang, L. Li, Y. Xu, Y. Zuo and G. Li, J. Mater. Chem. A, 2014, 2, 15774 DOI: 10.1039/C4TA02082K

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