| 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 Author | Fang, Tao(fangt@ihb.ac.cn) |
| 2020-08-15 | |
| Source Publication | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| ISSN | 0048-9697 |
| Volume | 730Pages:11 |
| Abstract | Heavy 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. |
| Keyword | Magnetic Fe3O4/g-C3N4/CL composite Cr (VI) adsorption Cr (III) immobilization Mechanism analysis DFT calculation |
| DOI | 10.1016/j.scitotenv.2020.138928 |
| Funding Organization | 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 ; 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 By | SCI ; SCI |
| Language | 英语 |
| Funding Project | National Key R&D Program of China[2018YFD0900801] ; Major Science and Technology Program for Water Pollution Control and Treatment[2017ZX07603-003] |
| WOS Research Area | Environmental Sciences & Ecology |
| WOS Subject | Environmental Sciences |
| WOS ID | WOS:000537446400020 |
| WOS Keyword | GRAPHITIC CARBON NITRIDE ; AQUEOUS-SOLUTIONS ; GRAPHENE OXIDE ; G-C3N4 NANOSHEETS ; CD(II) REMOVAL ; IN-SITU ; ADSORPTION ; CR(VI) ; FABRICATION ; ADSORBENT |
| Publisher | ELSEVIER |
| Funding Organization | 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 ; 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 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ihb.ac.cn/handle/342005/36704 |
| Collection | 水环境工程研究中心_期刊论文 |
| Corresponding Author | Fang, Tao |
| Affiliation | 1.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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