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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Published inJournal of colloid and interface science Vol. 496; pp. 425 - 433
Main Authors Ke, Jun, Li, Xinyong, Zhao, Qidong, Liu, Baojun, Liu, Shaomin, Wang, Shaobin
Format Journal Article
LanguageEnglish
Published United States Elsevier Inc 15.06.2017
Subjects
Carbon materials
carbon quantum dots
energy
hot water treatment
irradiation
methylene blue
Photocatalysis
photocatalysts
photons
Quantum dots
sol-gel processing
titanium dioxide
Upconversion
Upconversion
Quantum dots
Carbon materials
Photocatalysis
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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.
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ISSN:0021-9797
1095-7103
1095-7103
DOI:10.1016/j.jcis.2017.01.121