Visible light-driven photocatalytic degradation of organic pollutants via carbon quantum dots/TiO2

doi:10.1039/d1nj02387j

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Visible light-driven photocatalytic degradation of organic pollutants via carbon 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
ISSN号	1144-0546
DOI	10.1039/d1nj02387j
英文摘要	Using olive leaves as the carbon source, carbon quantum dots (CQDs) with up-conversion luminescence were prepared via a reflux method. Through a hydrothermal treatment, CQDs were loaded on the surface of TiO2 to form a CQDs/TiO2 composite 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/TiO2 composites with great photocatalytic efficiency. The performance of CQDs/TiO2 composites 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/TiO2 reached 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/TiO2 composites was greatly enhanced.
WOS研究方向	Chemistry
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000686744400001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148932]
专题	石油化工学院
作者单位	1.Lanzhou Univ Technol, Sch Petrochem Technol, Lanzhou 730050, Peoples R China; 2.Key Lab Low Carbon Energy & Chem Engn Gansu Prov, Lanzhou 730050, Peoples R China; 3.Nazarbayev Univ, Chem Dept, 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 pollutants via carbon 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 pollutants via carbon quantum dots/TiO2.NEW JOURNAL OF CHEMISTRY,45(35),16168-16178.
MLA	Wang, Kunjie,et al."Visible light-driven photocatalytic degradation of organic pollutants via carbon quantum dots/TiO2".NEW JOURNAL OF CHEMISTRY 45.35(2021):16168-16178.