Visible light-driven photocatalytic degradation of organic pollutantsviacarbon quantum dots/TiO2

doi:10.1039/d1nj02387j

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	Visible light-driven photocatalytic degradation of organic pollutantsviacarbon quantum dots/TiO2
	Wang, Kunjie 1,2; Liang, Lei 2; Zheng, Yi 2; Li, Hongxia 2; Niu, Xiaohui 2; Zhang, Deyi 2; Fan, Haiyan 3
刊名	New Journal of Chemistry
	2021-09-21
卷号	45 期号:35 页码:16168-16178
关键词	Carbon Carbon Quantum Dots Carrier mobility Degradation Efficiency Luminescence of inorganic solids Morphology Nanocrystals Oxide minerals Photocatalytic activity Photocurrents Rhodamine B Semiconductor quantum dots Titanium dioxide Hydrothermal treatments Photo catalytic degradation Photocatalytic efficiency Photocatalytic property Photogenerated charge carriers Separation efficiency Up-conversion luminescence Visible-light-driven
ISSN号	11440546
DOI	10.1039/d1nj02387j
英文摘要	Using olive leaves as the carbon source, carbon quantum dots (CQDs) with up-conversion luminescence were preparedviaa reflux method. Through a hydrothermal treatment, CQDs were loaded on the surface of TiO2to form a CQDs/TiO2composite that exhibited photocatalytic properties. The morphology, size and composition of the as-prepared composite were characterized using XRD, SEM, TEM and XPS. Excited at the wavelength range from 560 nm to 740 nm, CQDs exhibited a significant multi-photon-based up-conversion luminescence property. This property of CQDs endowed CQDs/TiO2composites with great photocatalytic efficiency. The performance of CQDs/TiO2composites was tested in the degradation of tetracycline (TC) and rhodamine B (RhB). Irradiated under visible light for 10 min and 70 min, the degradation rates of 5% CQDs/TiO2reached 81% and 92% for TC and RhB, respectively. Photocurrent and PL tests indicated that the loading of CQDs significantly improved the separation efficiency of TiO2-photogenerated charge carriers. Taking advantage of the up-conversion luminescence property of CQDs, the harvesting efficiency of visible light by CQDs/TiO2composites was greatly enhanced. © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2021.
WOS研究方向	Chemistry
语种	英语
出版者	Royal Society of Chemistry
WOS记录号	WOS:000686744400001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/151079]
专题	石油化工学院
作者单位	1.School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou; 730050, China; 3.Chemistry Department, Nazarbayev University, Astana; 010000, Kazakhstan
推荐引用方式 GB/T 7714	Wang, Kunjie,Liang, Lei,Zheng, Yi,et al. Visible light-driven photocatalytic degradation of organic pollutantsviacarbon quantum dots/TiO2[J]. New Journal of Chemistry,2021,45(35):16168-16178.
APA	Wang, Kunjie.,Liang, Lei.,Zheng, Yi.,Li, Hongxia.,Niu, Xiaohui.,...&Fan, Haiyan.(2021).Visible light-driven photocatalytic degradation of organic pollutantsviacarbon quantum dots/TiO2.New Journal of Chemistry,45(35),16168-16178.
MLA	Wang, Kunjie,et al."Visible light-driven photocatalytic degradation of organic pollutantsviacarbon quantum dots/TiO2".New Journal of Chemistry 45.35(2021):16168-16178.