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A novel ternary magnetic Fe3O4/g-C3N4/Carbon layer composite for ef ficient removal of Cr (VI): A combined approach using both batch experiments and theoretical calculation
Wang, Tao1,2; Zheng, Lewen3; Liu, Yonghong4; Tang, Wei1; Fang, Tao1,2; Xing, Baoshan5
Corresponding AuthorFang, Tao(fangt@ihb.ac.cn)
2020-08-15
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume730Pages:11
AbstractHeavy metal pollution has posed a potential hazard to the ecological environment and human health. Herein, a novel ternary magnetic adsorbent (Fe3O4/g-C3N4/Carbon layer, Carbon layer: hydrothermal products from sucrose) was synthesized through a simple hydrothermal carbonization (HTC) method for removal of hexavalent chromium (Cr (VI)) removal. The Carbon layer (CL) formed during the HTC of carbon precursors (sucrose) acted as a reducing agent. Also, it has abundant oxygen-containing groups on its surface. The Fe3O4/g-C3N4/CL had a high removal capacity for Cr (VI) (50.09 mg/g), and excellent regeneration and magnetic separation performance. Importantly, the Fe3O4/g-C3N4/CL could not only improve the adsorption ability for Cr (VI), but also strengthen the immobilization of Cr (III). Based on the comprehensive experiments and characterization, combined with DFT calculations, we proposed that, the first time, the removal of Cr (VI) was controlled by three consecutive processes: (1) ion exchange of Cr (VI) by hydroxyl groups, (2) reduction of Cr (VI) to Cr (III) by electron-donor (oxygen-containing) groups (EDGs), and (3) complexation of Cr (III) by amine groups. This study provides a new avenue for the removal of toxic oxygen anions and reveals an original removal mechanism of Fe3O4/g-C3N4/CLx (x = hydrothermal products from carbon precursors (glucose, ascorbic acid, cellulose)). (C) 2020 Elsevier B.V. All rights reserved.
KeywordMagnetic Fe3O4/g-C3N4/CL composite Cr (VI) adsorption Cr (III) immobilization Mechanism analysis DFT calculation
DOI10.1016/j.scitotenv.2020.138928
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Key R&D Program of China[2018YFD0900801] ; Major Science and Technology Program for Water Pollution Control and Treatment[2017ZX07603-003]
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000537446400020
WOS KeywordGRAPHITIC CARBON NITRIDE ; AQUEOUS-SOLUTIONS ; GRAPHENE OXIDE ; G-C3N4 NANOSHEETS ; CD(II) REMOVAL ; IN-SITU ; ADSORPTION ; CR(VI) ; FABRICATION ; ADSORBENT
PublisherELSEVIER
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/36704
Collection水环境工程研究中心_期刊论文
Corresponding AuthorFang, Tao
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, 7 Donghu South Rd, Wuhan 430072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Northwestern Polytech Univ, Sch Nat & Appl Sci, Xian 710129, Peoples R China
4.Huazhong Agr Univ, Coll Sci, Wuhan 430070, Peoples R China
5.Univ Massachusetts, Stockbridge Sch Agr, Amherst, MA 01003 USA
Recommended Citation
GB/T 7714
Wang, Tao,Zheng, Lewen,Liu, Yonghong,et al. A novel ternary magnetic Fe3O4/g-C3N4/Carbon layer composite for ef ficient removal of Cr (VI): A combined approach using both batch experiments and theoretical calculation[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,730:11.
APA Wang, Tao,Zheng, Lewen,Liu, Yonghong,Tang, Wei,Fang, Tao,&Xing, Baoshan.(2020).A novel ternary magnetic Fe3O4/g-C3N4/Carbon layer composite for ef ficient removal of Cr (VI): A combined approach using both batch experiments and theoretical calculation.SCIENCE OF THE TOTAL ENVIRONMENT,730,11.
MLA Wang, Tao,et al."A novel ternary magnetic Fe3O4/g-C3N4/Carbon layer composite for ef ficient removal of Cr (VI): A combined approach using both batch experiments and theoretical calculation".SCIENCE OF THE TOTAL ENVIRONMENT 730(2020):11.
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