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	Molecular insights into the role of fulvic acid in cobalt sorption onto graphene oxide and reduced graphene oxide
	Chang, Kaikai1; Li, Xue2; Liao, Qing1; Hu, Baowei1; Hu, Jun3,4; Sheng, Guodong1; Linghu, Wensheng1; Huang, Yuying5; Asiri, Abdullah M.6; Alamry, Khalid A.6
刊名	CHEMICAL ENGINEERING JOURNAL
	2017-11-01
卷号	327页码:320-327
关键词	Graphene Oxide Reduced Graphene Oxide Co(Ii) Fulvic Acid Extended X-ray Absorption Fine Structure
DOI	10.1016/j.cej.2017.06.100
文献子类	Article
英文摘要	The role of fulvic acid (FA) in the sorption of Co(II) onto reduced graphene oxide (RGO) and graphene oxide (GO) were investigated using batch equilibrium method and extended X-ray absorption fine structure (EXAFS). The results showed that FA could be adsorbed on both RGO and GO via different interaction mechanisms, and thus exert different roles in Co(II) sorption. The sorption of FA on RGO was mainly controlled by p-p interaction, and the adsorbed FA introduced negative charges and O-bearing functional groups on RGO, facilitating Co(II) sorption due to electrostatic attraction and complexation. Meanwhile, the sorption of FA on GO was mainly governed by polar interactions, and the adsorbed FA can not only introduce new sites for enhanced Co(II) sorption, but also shield the surface of GO and occupy parts of sorption sites, which decreased Co(II) sorption. So, FA had little role in Co(II) sorption onto GO. EXAFS results suggest that O-bearing functional groups of RGO and GO were the main sorption sites for Co(II). Compared to GO, a portion of Co(II) precipitate on RGO surfaces at pH 8.78 due to fewer O-bearing functional groups. The introduction of FA provides lots of sorption sites on RGO, which makes Co(II) be adsorbed on RGO as RGO-FA-Co ternary surface complexes. The results of this work indicated that both RGO and GO exhibited great potential in pollution control applications, even in mixed organic and inorganic pollutants. (C) 2017 Elsevier B.V. All rights reserved.
WOS关键词	LAYERED DOUBLE HYDROXIDES ; ZERO-VALENT IRON ; NATURAL ORGANIC-MATTER ; HUMIC SUBSTANCE INTERACTION ; INCIDENCE XAFS SPECTROSCOPY ; ABSORPTION FINE-STRUCTURE ; ION POLLUTION MANAGEMENT ; HEAVY-METAL IONS ; AQUEOUS-SOLUTION ; ENHANCED SEQUESTRATION
WOS研究方向	Engineering
语种	英语
WOS记录号	WOS:000408663800034
资助机构	Natural Science Foundation of China(21577093 ; Natural Science Foundation of China(21577093 ; Natural Science Foundation of China(21577093 ; Natural Science Foundation of China(21577093 ; Natural Science Foundation of China(21577093 ; Natural Science Foundation of China(21577093 ; Natural Science Foundation of China(21577093 ; Natural Science Foundation of China(21577093 ; Natural Science Foundation of China(21577093 ; Natural Science Foundation of China(21577093 ; Natural Science Foundation of China(21577093 ; Natural Science Foundation of China(21577093 ; Natural Science Foundation of China(21577093 ; Natural Science Foundation of China(21577093 ; Natural Science Foundation of China(21577093 ; Natural Science Foundation of China(21577093 ; China Postdoctoral Science Foundation(2016M591140 ; China Postdoctoral Science Foundation(2016M591140 ; China Postdoctoral Science Foundation(2016M591140 ; China Postdoctoral Science Foundation(2016M591140 ; China Postdoctoral Science Foundation(2016M591140 ; 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内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/33650]
专题	合肥物质科学研究院_中科院等离子体物理研究所
作者单位	1.Shaoxing Univ, Coll Chem & Chem Engn, Shaoxing 312000, Zhejiang, Peoples R China 2.Shaoxing Univ, Coll Yuanpei, Shaoxing 312000, Zhejiang, Peoples R China 3.Dongguan Univ Technol, Sch Elect Engn, Dongguan 523808, Guangdong, Peoples R China 4.Chinese Acad Sci, Inst Plasma Phys, POB 1126, Hefei 230031, Anhui, Peoples R China 5.Chinese Acad Sci, SSRF, Shanghai 201204, Peoples R China 6.King Abdulaziz Univ, Fac Sci, Chem Dept, Jeddah 21589, Saudi Arabia
推荐引用方式 GB/T 7714	Chang, Kaikai,Li, Xue,Liao, Qing,et al. Molecular insights into the role of fulvic acid in cobalt sorption onto graphene oxide and reduced graphene oxide[J]. CHEMICAL ENGINEERING JOURNAL,2017,327:320-327.
APA	Chang, Kaikai.,Li, Xue.,Liao, Qing.,Hu, Baowei.,Hu, Jun.,...&Alamry, Khalid A..(2017).Molecular insights into the role of fulvic acid in cobalt sorption onto graphene oxide and reduced graphene oxide.CHEMICAL ENGINEERING JOURNAL,327,320-327.
MLA	Chang, Kaikai,et al."Molecular insights into the role of fulvic acid in cobalt sorption onto graphene oxide and reduced graphene oxide".CHEMICAL ENGINEERING JOURNAL 327(2017):320-327.

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