Institutional Repository of Chinese Acad Sci, Inst Solid State Phys， Hefei 230031, Anhui, Peoples R China
| Hierarchical iron containing gamma-MnO2 hollow microspheres: A facile one-step synthesis and effective removal of As(III) via oxidation and adsorption | |
Ge, Xiao1,2; Liu, Juntao1; Song, Xiangyang1; Wang, Guozhong1 ; Zhang, Haimin1; Zhang, Yunxia1; Zhao, Huijun1,3
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| 2016-10-01 | |
| 发表期刊 | CHEMICAL ENGINEERING JOURNAL
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| 摘要 | The hierarchical flower-like iron containing gamma-MnO2 hollow microspheres assembled by ultrathin nanosheets have been successfully fabricated via a facile one-step co-precipitation route in the absence of additional templates or surfactants. Structural characterization show that iron element is uniformly incorporated into gamma-MnO2 framework, and no segregated iron oxide appears. The resulting iron containing MnO2 hollow microspheres exhibit a noticeable enhanced performance for As(III) removal compared to that of the undoped counterparts, accompanied by 102.84 mg/g of the saturated removal capacity towards As(III). The excellent performance for the arsenic removal may be attributed to the unique structural characteristics of highly accessible surface and fully exposed active sites inherited from the hierarchical iron containing gamma-MnO2 samples. The co-existence of oxidation and adsorption is another key factor for the improvement of As(III) removal efficiency, in which manganese dioxide is mainly responsible for oxidizing As(III) to As(V) and ferrous species may serve to the adsorption of the generated As(V), as evidenced by X-ray photoelectron spectroscopy (XPS) analysis. Importantly, the composites exhibit an excellent regenerative ability over three cycles without a significant decrease in its removal efficiency towards As(III). Furthermore, the relatively large micrometer-scale particles can be easily separated by filtration, accompanied by fewer secondary contaminants risks than nanoparticles. Therefore, the fabricated hierarchical Fe-containing gamma-MnO2 hollow spheres in the present study will be an excellent candidate for the arsenic transformation and removal from the contaminated water based on the synergistic effects of effective oxidizing and adsorptive performance, good regeneration together with the convenient separation. (C) 2016 Elsevier B.V. All rights reserved. |
| 文章类型 | Article |
| 关键词 | Hierarchical Iron Containing Gamma-mno2 As(Iii) Removal Oxidation Adsorption |
| WOS标题词 | Science & Technology ; Technology |
| DOI | 10.1016/j.cej.2016.05.005 |
| 关键词[WOS] | BINARY OXIDE ADSORBENT ; ZERO-VALENT IRON ; ARSENIC REMOVAL ; AQUEOUS-SOLUTIONS ; CONTROLLABLE SYNTHESIS ; HYDROGEN-PEROXIDE ; MESOPOROUS MNO2 ; BIMETAL OXIDES ; FE ; NANOPARTICLES |
| 收录类别 | SCI |
| 语种 | 英语 |
| 项目资助者 | National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Natural Science Foundation of China(51272255 ; National Natural Science Foundation of China(51272255 ; National Natural Science Foundation of China(51272255 ; National Natural Science Foundation of China(51272255 ; National Natural Science Foundation of China(51272255 ; National Natural Science Foundation of China(51272255 ; National Natural Science Foundation of China(51272255 ; National Natural Science Foundation of China(51272255 ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; 51572263 ; 51572263 ; 51572263 ; 51572263 ; 51572263 ; 51572263 ; 51572263 ; 51572263 ; 51472246) ; 51472246) ; 51472246) ; 51472246) ; 51472246) ; 51472246) ; 51472246) ; 51472246) |
| WOS研究方向 | Engineering |
| WOS类目 | Engineering, Environmental ; Engineering, Chemical |
| WOS记录号 | WOS:000378470700017 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.hfcas.ac.cn:8080/handle/334002/22088 |
| 专题 | 中科院固体物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, Ctr Environm & Energy Nanomat,Key Lab Mat Phys, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.Griffith Univ, Ctr Clean Environm & Energy, Gold Coast Campus, Nathan, Qld 4222, Australia |
| 推荐引用方式 GB/T 7714 | Ge, Xiao,Liu, Juntao,Song, Xiangyang,et al. Hierarchical iron containing gamma-MnO2 hollow microspheres: A facile one-step synthesis and effective removal of As(III) via oxidation and adsorption[J]. CHEMICAL ENGINEERING JOURNAL,2016,301(无):139-148. |
| APA | Ge, Xiao.,Liu, Juntao.,Song, Xiangyang.,Wang, Guozhong.,Zhang, Haimin.,...&Zhao, Huijun.(2016).Hierarchical iron containing gamma-MnO2 hollow microspheres: A facile one-step synthesis and effective removal of As(III) via oxidation and adsorption.CHEMICAL ENGINEERING JOURNAL,301(无),139-148. |
| MLA | Ge, Xiao,et al."Hierarchical iron containing gamma-MnO2 hollow microspheres: A facile one-step synthesis and effective removal of As(III) via oxidation and adsorption".CHEMICAL ENGINEERING JOURNAL 301.无(2016):139-148. |
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