Tuning the functional groups of a graphene oxide membrane by center dot OH contributes to the nearly complete prevention of membrane fouling

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院环境生物技术重点实验室

	Tuning the functional groups of a graphene oxide membrane by center dot OH contributes to the nearly complete prevention of membrane fouling
	Han, Jing-Long ; Zhang, Depeng ; Jiang, Wanrun ; Tao, Yu ; Liu, Mei-Jun ; Haider, Muhammad Rizwan ; Ren, Rui-Yun ; Wang, Hong-Cheng ; Jiang, Wen-Li ; Ding, Yang-Cheng
刊名	JOURNAL OF MEMBRANE SCIENCE
	2019-04-15
卷号	576 页码:190-197
关键词	Graphene oxide membrane Membrane fouling Hydroxyl groups Hydroxyl radicals Adhesion force
ISSN号	0376-7388
英文摘要	Graphene oxide(GO) membrane has the potential to become the next generation of water purification membrane, which could help to ease water crisis in many counties. However, organic membrane fouling is still difficult to avoid. In this study, we used a trace of center dot OH to mitigate fouling by tuning surface functional groups of GO membrane and altering fouling layer. X-ray photoelectron spectroscopy (XPS) analysis indicated that center dot OH changed the epoxide-dominated GO surface to a hydroxyl-dominated surface. The adhesion force between the GO membrane and organic microspheres decreased from 0.37 +/- 0.16 mN/m to 0.08 +/- 0.14 mN/m after functionalization by center dot OH. Quantum mechanical simulations showed that the interaction energy of the hydroxyl-dominated GO surface with a modified alginic acid monomer was 4.07 eV, which was lower than that (5.68 eV) between the epoxide-dominated GO surface and the modified alginic acid monomer. A thicker water molecule layer formed on the hydroxyl-dominated GO surface than on the epoxide-dominated GO surface through hydrogen bonding, thus repelling organic foulants. Combined with the oxidative effect of center dot OH, the current method achieved the nearly complete prevention of membrane fouling. This result could provide us a new perspective for the fouling-free membrane-based water purification process.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43408]
专题	生态环境研究中心_中国科学院环境生物技术重点实验室
作者单位	1.Imperial Coll London, Dept Chem Engn, South Kensington Campus, London SW7 2AZ, England 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 4.Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Heilongjiang, Peoples R China 5.Jilin Univ, Inst Atom & Mol Phys, Changchun 130012, Jilin, Peoples R China
推荐引用方式 GB/T 7714	Han, Jing-Long,Zhang, Depeng,Jiang, Wanrun,et al. Tuning the functional groups of a graphene oxide membrane by center dot OH contributes to the nearly complete prevention of membrane fouling[J]. JOURNAL OF MEMBRANE SCIENCE,2019,576:190-197.
APA	Han, Jing-Long.,Zhang, Depeng.,Jiang, Wanrun.,Tao, Yu.,Liu, Mei-Jun.,...&Wang, Ai-Jie.(2019).Tuning the functional groups of a graphene oxide membrane by center dot OH contributes to the nearly complete prevention of membrane fouling.JOURNAL OF MEMBRANE SCIENCE,576,190-197.
MLA	Han, Jing-Long,et al."Tuning the functional groups of a graphene oxide membrane by center dot OH contributes to the nearly complete prevention of membrane fouling".JOURNAL OF MEMBRANE SCIENCE 576(2019):190-197.