Facile preparation of a TiO2 quantum dot/graphitic carbon nitride heterojunction with highly efficient photocatalytic activity.

Title Facile preparation of a TiO2 quantum dot/graphitic carbon nitride heterojunction with highly efficient photocatalytic activity.
Authors X. Wang; S. Jiang; X. Huo; R. Xia; E. Muhire; M. Gao
Journal Nanotechnology
DOI 10.1088/1361-6528/aab1be
Abstract

In this article, mechanical grinding, an effortless and super-effective synthetic strategy, is used to successfully synthesize a TiO2 quantum dot (TiOQD)/graphitic carbon nitride (g-CN) heterostructure. X-ray photoelectron spectroscopy results together with transmission electron microscopy reveal the formation of the TiOQD/g-CN heterostructure with strong interfacial interaction. Because of the advantages of this characteristic, the prepared heterostructure exhibits excellent properties for photocatalytic wastewater treatment. Notably, the optimum photocatalytic activity of the TiOQD/g-CN heterostructure is nearly 3.4 times higher than that of the g-CN nanosheets used for the photodegradation of rhodamine B pollutant. In addition, the stability and possible degradation mechanism of the TiOQD/g-CN heterojunction are studied in detail. This method may stimulate an effective approach to synthesizing QD-sensitized semiconductor materials and facilitate their application in environmental protection.

Citation X. Wang; S. Jiang; X. Huo; R. Xia; E. Muhire; M. Gao.Facile preparation of a TiO2 quantum dot/graphitic carbon nitride heterojunction with highly efficient photocatalytic activity.. Nanotechnology. 2018;29(20):205702. doi:10.1088/1361-6528/aab1be

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Nitrogen

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