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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
2017-11-01
Source PublicationCHEMICAL ENGINEERING JOURNAL
Volume327Pages:320-327
AbstractThe 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.
SubtypeArticle
KeywordGraphene Oxide Reduced Graphene Oxide Co(Ii) Fulvic Acid Extended X-ray Absorption Fine Structure
WOS HeadingsScience & Technology ; Technology
Funding OrganizationNatural Science Foundation of China(21577093 ; Natural Science Foundation of China(21577093 ; China Postdoctoral Science Foundation(2016M591140 ; China Postdoctoral Science Foundation(2016M591140 ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; 21207092) ; 21207092) ; 2013M531536) ; 2013M531536) ; Natural Science Foundation of China(21577093 ; Natural Science Foundation of China(21577093 ; China Postdoctoral Science Foundation(2016M591140 ; China Postdoctoral Science Foundation(2016M591140 ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; 21207092) ; 21207092) ; 2013M531536) ; 2013M531536)
DOI10.1016/j.cej.2017.06.100
WOS KeywordLAYERED 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
Indexed BySCI
Language英语
Funding OrganizationNatural Science Foundation of China(21577093 ; Natural Science Foundation of China(21577093 ; China Postdoctoral Science Foundation(2016M591140 ; China Postdoctoral Science Foundation(2016M591140 ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; 21207092) ; 21207092) ; 2013M531536) ; 2013M531536) ; Natural Science Foundation of China(21577093 ; Natural Science Foundation of China(21577093 ; China Postdoctoral Science Foundation(2016M591140 ; China Postdoctoral Science Foundation(2016M591140 ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; 21207092) ; 21207092) ; 2013M531536) ; 2013M531536)
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
WOS IDWOS:000408663800034
Citation statistics
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/33650
Collection中科院等离子体物理研究所
Affiliation1.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
Recommended Citation
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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