Effect of P123 on the microstructure and photocatalytic activity of rGO/mesoporous TiO2 films

	Effect of P123 on the microstructure and photocatalytic activity of rGO/mesoporous TiO2 films
	Li, Cui-Xia; Kang, Wei-Chao; Ren, Yi-Bo; Yang, Zhi-Zhong; Shi, Xiao; Li, Wen-Sheng
刊名	Zhongguo Huanjing Kexue/China Environmental Science
	2019-09-20
卷号	39 期号:9 页码:3754-3760
关键词	Adsorption Crystal structure Degradation Graphene Irradiation Morphology Multilayer films Multilayers Oxide films Oxide minerals Photocatalysis Photocatalytic activity Polyethylene oxides Polypropylene oxides Polypropylenes Pore size Pore structure Reduced Graphene Oxide Scanning electron microscopy Sols Specific surface area Substrates Titanium dioxide Ultraviolet radiation Alternant films Large specific surface areas Oxyteracycline Oxytetracyclines (OTC) Photo catalytic degradation Photocatalytic degradation mechanism Photocatalytic performance Ultraviolet irradiations
ISSN号	10006923
英文摘要	In this study, self-made GO dispersion liquid and TiO2 precursor sol with a certain amount of the triblock copolymer, (polyethylene oxide, PEO)20-(polypropylene oxide, PPO)70-(PEO)20 (P123) were used as raw materials. The reduced graphene oxide/mesoporous TiO2 (rGO/m-TiO2) multilayer films were prepared on glass substrates by alternating dipping-coating combined with heat treatment and ultraviolet lamp irradiation reduction method. The multilayer film was characterized by X-ray diffraction (XRD), Raman spectroscopy (Raman), scanning electron microscopy (SEM), and specific surface area (BET) analysis. The effects of the amount of templating agent P123 on the crystal structure, specific surface area, morphology, pore size distribution, adsorption performance, and photocatalytic performance of the multilayer film were investigated. The photocatalytic degradation of oxytetracycline (OTC) by multilayer film multilayer film was evaluated under ultraviolet light and sunlight. The photocatalytic degradation mechanism was studied under ultraviolet light. The results showed that the crystal structure of TiO2 does not change after adding P123. The optimized pore structure and large specific surface area can be obtained by the introduction of appropriate P123, which are conducive to the adsorption capacity and the photocatalytic activity. The adsorption efficiency of rGO/TiO2 (5wt%P123) film on OTC reached 51.2% for 60min, and the degradation rate of ultraviolet irradiation reached 90.9% for 135 min.The degradation rate reached 91.5% after 50min of sunlight exposure. During the degradation of OTC, hydroxyl radical (OH) plays a major role in photocatalysis, and hydroxylation and secondary hydroxyl oxidation are the main reaction paths. © 2019, Editorial Board of China Environmental Science. All right reserved.
语种	中文
出版者	Chinese Society for Environmental Sciences
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113875]
专题	材料科学与工程学院
作者单位	Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Li, Cui-Xia,Kang, Wei-Chao,Ren, Yi-Bo,et al. Effect of P123 on the microstructure and photocatalytic activity of rGO/mesoporous TiO2 films[J]. Zhongguo Huanjing Kexue/China Environmental Science,2019,39(9):3754-3760.
APA	Li, Cui-Xia,Kang, Wei-Chao,Ren, Yi-Bo,Yang, Zhi-Zhong,Shi, Xiao,&Li, Wen-Sheng.(2019).Effect of P123 on the microstructure and photocatalytic activity of rGO/mesoporous TiO2 films.Zhongguo Huanjing Kexue/China Environmental Science,39(9),3754-3760.
MLA	Li, Cui-Xia,et al."Effect of P123 on the microstructure and photocatalytic activity of rGO/mesoporous TiO2 films".Zhongguo Huanjing Kexue/China Environmental Science 39.9(2019):3754-3760.