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

[Display omitted] 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...

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Bibliographic Details
Published in:Journal of colloid and interface science 2017-06, Vol.496, p.425-433
Main Authors: Ke, Jun, Li, Xinyong, Zhao, Qidong, Liu, Baojun, Liu, Shaomin, Wang, Shaobin
Format: Article
Language:English
Subjects:
Carbon materials
Photocatalysis
Quantum dots
Upconversion
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Summary:[Display omitted] 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 120min, which is 3.6 times higher than that of pure TiO2.
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2017.01.121