Enhanced antibiotic removal through a dual-reaction-center Fenton-like process in 3D graphene based hydrogels

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

	Enhanced antibiotic removal through a dual-reaction-center Fenton-like process in 3D graphene based hydrogels
	Zhuang, Yuan ; Liu, Qiaozhi ; Kong, Yan ; Shen, Congcong ; Hao, Haotian ; Dionysiou, Dionysios D.; Shi, Baoyou
刊名	ENVIRONMENTAL SCIENCE-NANO
	2019-02-01
卷号	6 期号:2 页码:388-398
ISSN号	2051-8153
英文摘要	Considerable attention has been paid to water treatment using nanomaterials. In this study, ethylene glycol (EG) is used to control the formation of alpha-FeOOH/reduced graphene oxide (RGO) hydrogels in a facile way. The EG-promoted alpha-FeOOH/RGO hydrogels exhibit higher moisture content, more porous structure, lower agglomeration, larger swelling, higher specific area, more defects in graphene sheets, stronger Fe-O-C bonds, and higher roughness than those without modification. More importantly and interestingly, we found for the first time that the alpha-FeOOH/RGO hydrogels could generate reactive oxygen species (ROS) without the addition of H2O2, and this property is also enhanced in EG-promoted hydrogels due to (i) the increase in defects in graphene sheets leading to enhanced oxygen reduction reaction (ORR) and (ii) the strengthening of Fe-O-C bonds relating to dual reaction centers with stronger generation of (OH)-O-center dot. In tetracycline degradation from water, the increase in electron density disparity in the material and the promoted role of tetracycline as an electron donor are proved to be the main reasons for the enhanced tetracycline removal from aqueous solution. Results obtained through density functional theory (DFT) indicate that the electrons could be transferred from the N area in tetracycline to the Fe area in the material, based on which we found a special pi-pi interaction (between tetracycline and graphene) coupled with pi-Fe interactions (between graphene and alpha-FeOOH) as an efficient pollutant removal method. Our findings provide a simple strategy for the structure improvement of environmental nanomaterials and enrich their mechanism studies.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43451]
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.Univ Cincinnati, Environm Engn & Sci Program, Dept Chem & Environm Engn ChEE, Engn Res Ctr 705, Cincinnati, OH USA 2.Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Zhuang, Yuan,Liu, Qiaozhi,Kong, Yan,et al. Enhanced antibiotic removal through a dual-reaction-center Fenton-like process in 3D graphene based hydrogels[J]. ENVIRONMENTAL SCIENCE-NANO,2019,6(2):388-398.
APA	Zhuang, Yuan.,Liu, Qiaozhi.,Kong, Yan.,Shen, Congcong.,Hao, Haotian.,...&Shi, Baoyou.(2019).Enhanced antibiotic removal through a dual-reaction-center Fenton-like process in 3D graphene based hydrogels.ENVIRONMENTAL SCIENCE-NANO,6(2),388-398.
MLA	Zhuang, Yuan,et al."Enhanced antibiotic removal through a dual-reaction-center Fenton-like process in 3D graphene based hydrogels".ENVIRONMENTAL SCIENCE-NANO 6.2(2019):388-398.