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Issue 10, 2018
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Self-modification of g-C3N4 with its quantum dots for enhanced photocatalytic activity

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Abstract

The photocatalytic activity of g-C3N4 was restricted by the fast charge recombination of photo-generated electrons and holes. In this work, a g-C3N4 metal-free composite modified with g-C3N4 quantum dots (CNQDs) (CNQDs/CN) was successfully prepared by a simple solvothermal method aiming to greatly promote the charge separation rate. The CNQDs/CN composite was confirmed by HRTEM and XPS measurements and exhibited outstanding photocatalytic activity in the degradation of organic pollutants represented by Rhodamine B. The enhanced photocatalytic performance of the CNQDs/CN composite can be ascribed to the effective charge separation and transfer across the interfaces between g-C3N4 and CNQDs, which benefits from the excellent photoelectrochemical properties as well as the prolonged lifetime of charge carriers. The self-modification strategy provides a rational and interesting design idea to fabricate highly efficient photocatalysts.

Graphical abstract: Self-modification of g-C3N4 with its quantum dots for enhanced photocatalytic activity

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Publication details

The article was received on 17 Feb 2018, accepted on 29 Mar 2018 and first published on 02 Apr 2018


Article type: Paper
DOI: 10.1039/C8CY00351C
Citation: Catal. Sci. Technol., 2018,8, 2617-2623
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    Self-modification of g-C3N4 with its quantum dots for enhanced photocatalytic activity

    L. Zhou, Y. Tian, J. Lei, L. Wang, Y. Liu and J. Zhang, Catal. Sci. Technol., 2018, 8, 2617
    DOI: 10.1039/C8CY00351C

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