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

被引：168
|
作者：
Ke, Jun [1 ,2 ,3 ]
Li, Xinyong [1 ,3 ]
Zhao, Qidong [1 ]
Liu, Baojun [1 ]
Liu, Shaomin [3 ]
Wang, Shaobin [3 ]
机构：
[1] Dalian Univ Technol, Sch Environm Sci & Technol, State Key Lab Fine Chem, Key Lab Ind Ecol & Environm Engn MOE, Dalian 116024, Peoples R China
[2] Wuhan Inst Technol, Sch Chem & Environm Engn, Wuhan 430072, Peoples R China
[3] Curtin Univ, Dept Chem Engn, GPO Box U1987, Perth, WA 6845, Australia
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2017年 / 496卷
关键词：
Carbon materials; Quantum dots; Upconversion; Photocatalysis; DOPED TIO2 PHOTOCATALYST; GRAPHENE OXIDE; HIGHLY EFFICIENT; NANOTUBE ARRAYS; CHARGE-TRANSFER; FLUORESCENCE; COMPOSITES; GREEN; NANOPARTICLES; RESONANCE;
D O I：
10.1016/j.jcis.2017.01.121
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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.(C) 2017 Published by Elsevier Inc.
引用
收藏
页码：425 / 433
页数：9
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