title: Upconversion carbon quantum dots as visible light responsive component for efficient enhancement of photocatalytic performance.
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 TiO2photocatylysts 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.
authors.affiliation: State Key Laboratory of Fine Chemical, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China; School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430072, China; Department of Chemical Engineering, Curtin University, Perth, GPO Box U1987, WA 6845, Australia.
authors.forename: Jun
authors.initials: J
authors.lastname: Ke
authors.affiliation: State Key Laboratory of Fine Chemical, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China; Department of Chemical Engineering, Curtin University, Perth, GPO Box U1987, WA 6845, Australia. Electronic address: xyli@dlut.edu.cn.
authors.forename: Xinyong
authors.initials: X
authors.lastname: Li
authors.affiliation: State Key Laboratory of Fine Chemical, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
authors.forename: Qidong
authors.initials: Q
authors.lastname: Zhao
authors.affiliation: State Key Laboratory of Fine Chemical, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
authors.forename: Baojun
authors.initials: B
authors.lastname: Liu
authors.affiliation: Department of Chemical Engineering, Curtin University, Perth, GPO Box U1987, WA 6845, Australia.
authors.forename: Shaomin
authors.initials: S
authors.lastname: Liu
authors.affiliation: Department of Chemical Engineering, Curtin University, Perth, GPO Box U1987, WA 6845, Australia. Electronic address: shaobin.wang@curtin.edu.au.
authors.forename: Shaobin
authors.initials: S
authors.lastname: Wang
keywords: Carbon materials; Photocatalysis; Quantum dots; Upconversion