Faceted TiO2 photocatalytic degradation of anthraquinone in aquatic solution under solar irradiation

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Faceted TiO2 photocatalytic degradation of anthraquinone in aquatic solution under solar irradiation
	Ye, Tingming ; Qi, Weixiao ; An, Xiaoqiang ; Liu, Huijuan ; Qu, Jiuhui
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2019-10-20
卷号	688 页码:592-599
关键词	Facet-dependent TiO2 Anthraquinone photodegradation Water matrix Mechanism
ISSN号	0048-9697
英文摘要	Anthraquinone (AQ), a common oxygenated polycyclic aromatic hydrocarbon (PAH) in the water environment, often occurs with higher concentrations than its parent anthracene as it is the dominant intermediate from anthracene during both wastewater treatment and transformation in natural waters. During the elimination of PAHs and their intermediates, the water matrix often induces positive or negative effects. In this paper, photocatalytic degradation of AQ in the presence of inorganic ions (NO3-, HCO3-, Fe3+) and organic matter (humic acid) was studied with {101} and {010}-TiO2 as sunlight-driven photocatalysts. Meanwhile, the effect of dissolved oxygen (DO) on photocatalytic degradation of AQ was evaluated. The results showed that NO3- had a slight suppressing effect, while HCO3- and Fe3+ promoted the photocatalytic activity due to formation of new oxidizers (CO3 center dot(-) and H2O2). Interestingly, HA could envelope {101}-TiO2 to inhibit photodegradation; however, it had almost no effect on {010}-TiO2 due to the different surface structures and properties. High dissolved oxygen content in water could markedly promote the photodegradation of AQ. This was consistent with the results of scavenging experiments, which demonstrated that center dot O-2(-) and h(+) played more important roles than center dot OH did. A small amount of benzene was detected as an intermediate product of AQ by LC-QTOF-MS analysis. Hopefully, this work can contribute to the understanding of the potential of water remediation by faceted photocatalysts. (C) 2019 Elsevier B.V. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43460]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
作者单位	1.Tsinghua Univ, Ctr Water & Ecol, State Key Joint Lab Environm Simulat & Pollut Con, Sch Environm, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Ye, Tingming,Qi, Weixiao,An, Xiaoqiang,et al. Faceted TiO2 photocatalytic degradation of anthraquinone in aquatic solution under solar irradiation[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,688:592-599.
APA	Ye, Tingming,Qi, Weixiao,An, Xiaoqiang,Liu, Huijuan,&Qu, Jiuhui.(2019).Faceted TiO2 photocatalytic degradation of anthraquinone in aquatic solution under solar irradiation.SCIENCE OF THE TOTAL ENVIRONMENT,688,592-599.
MLA	Ye, Tingming,et al."Faceted TiO2 photocatalytic degradation of anthraquinone in aquatic solution under solar irradiation".SCIENCE OF THE TOTAL ENVIRONMENT 688(2019):592-599.