Upconversion carbon quantum dots as visible light responsive component for efficient enhancement of photocatalytic performance

Ke, J.; Li, X.; Zhao, Q.; Liu, B.; Liu, Shaomin; Wang, Shaobin

doi:10.1016/j.jcis.2017.01.121

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Authors

Ke, J.

Li, X.

Zhao, Q.

Liu, B.

Liu, Shaomin

Wang, Shaobin

Date

2017

Type

Journal Article

Metadata

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Citation

Ke, J. and Li, X. and Zhao, Q. and Liu, B. and Liu, S. and Wang, S. 2017. Upconversion carbon quantum dots as visible light responsive component for efficient enhancement of photocatalytic performance. Journal of Colloid and Interface Science. 496: pp. 425-433.

Source Title

Journal of Colloid and Interface Science

DOI

10.1016/j.jcis.2017.01.121

ISSN

0021-9797

School

Department of Chemical Engineering

URI

http://hdl.handle.net/20.500.11937/50735

Collection

Curtin Research Publications

Abstract

It finds that CQDs synthesized by hydrothermal method possess obvious upconversion properties that could transfer low energy photons to high energy photons, resulting in enhanced visible light response and utilization. Herein, carbon quantum dots (CQDs) modified TiO2 photocatylysts were successfully prepared by a facile sol-gel method. Photophysical and surficial properties of the as-prepared composite photocatalyst were investigated in details. Furthermore, photocatalytic performance was tested by degrading methylene blue (MB) under visible light irradiation. The degradation efficiency of methylene blue (MB) is as high as 90% within 120 min, which is 3.6 times higher than that of pure TiO2.