CeOx/TiO2-yFy nanocomposite: An efficient electron and oxygen tuning mechanism for photocatalytic inactivation of water-bloom algae

doi:10.1016/j.ceramint.2018.06.164

	CeOx/TiO2-yFy nanocomposite: An efficient electron and oxygen tuning mechanism for photocatalytic inactivation of water-bloom algae
	Wang, Xin 1,2; Song, Jingke 3; Su, Chenliang 1; Wang, Zhongchang 2; Wang, Xuejiang 3
刊名	Ceramics International
	2018
卷号	44 期号:16 页码:19151-19159
ISSN号	02728842
DOI	10.1016/j.ceramint.2018.06.164
英文摘要	Eutrophication raises a widespread problem for rivers and lakes all over the world, which serves as a seedbed for uncontrollable growth of harmful algae. Here, we prepare CeOx/TiO2-yFy nanocomposites by a facile sol-gel method to offer an efficient solution for inactivation of harmful algae such as Microcystis aeruginosa with visible light irradiation. The results show that the nanocomposites hold ideal CeOx coupling and F doping forms when the calcination temperature is 550 °C (CeOx/TiO2-yFy-550). The CeOx/TiO2-yFy-550 nanocomposite exhibits a higher light absorption capacity and lower recombination efficiency for photogenerated carriers in comparison to the CeOx/TiO2-yFy nanocomposite. Moreover, it exhibits an excellent photocatalytic inactivation efficiency of 100% following 4 h irradiation. We also find that the photosynthetic efficiency of algal cells reduces in the inactivation process, and the electron transport process in the photosynthetic system is inhibited, which are ascribed to the formation of hydroxyl radicals (·OH) and superoxide radical (·O2-). Such an efficient photocatalytic inactivation performance for the CeOx/TiO2-yFy-550 can be attributed to the outstanding contribution of ·O2- resulting from the electron and oxygen tuning by CeOx coupling and F doping. © 2018
出版者	Elsevier Ltd
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25349]
专题	中国科学院上海硅酸盐研究所
作者单位	1.SZU-NUS Collaborative Innovation Center for Optoelectronics Science and Technology, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen; 518060, China; 2.International Iberian Nanotechnology Laboratory (INL), Avenida Mestre Jose Veiga, Braga; 4715-330, Portugal; 3.College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai Institute of Pollution Control and Ecological Security, Shanghai; 200092, China
推荐引用方式 GB/T 7714	Wang, Xin,Song, Jingke,Su, Chenliang,et al. CeOx/TiO2-yFy nanocomposite: An efficient electron and oxygen tuning mechanism for photocatalytic inactivation of water-bloom algae[J]. Ceramics International,2018,44(16):19151-19159.
APA	Wang, Xin,Song, Jingke,Su, Chenliang,Wang, Zhongchang,&Wang, Xuejiang.(2018).CeOx/TiO2-yFy nanocomposite: An efficient electron and oxygen tuning mechanism for photocatalytic inactivation of water-bloom algae.Ceramics International,44(16),19151-19159.
MLA	Wang, Xin,et al."CeOx/TiO2-yFy nanocomposite: An efficient electron and oxygen tuning mechanism for photocatalytic inactivation of water-bloom algae".Ceramics International 44.16(2018):19151-19159.