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  4. 中科院固体物理研究所
Fabrication of hierarchical iron-containing MnO2 hollow microspheres assembled by thickness-tunable nanosheets for efficient phosphate removal

文献类型：期刊论文

作者Ge, Xiao1,2; Song, Xiangyang1; Ma, Yue1; Zhou, Hongjian1; Wang, Guozhong1; Zhang, Haimin1; Zhang, Yunxia1; Zhao, Huijun1,3; Wong, Po Keung4
刊名JOURNAL OF MATERIALS CHEMISTRY A
出版日期2016
卷号4期号:38页码:14814-14826
DOI10.1039/c6ta05386f
文献子类Article
英文摘要The eutrophication of water bodies caused by the excessive release of phosphorus is becoming a serious world-wide environmental problem. To address this issue, the exploitation of three-dimensional (3D) hierarchical architectures will be an effective strategy for sequestrating phosphate and preventing the occurrence of eutrophication. In this study, 3D flower-like hierarchical iron containing MnO2 hollow microspheres have been successfully fabricated via a facile one-step template-free route for the efficient removal of phosphate. Field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) studies show that the microspheres obtained consist of numerous intertwining nanosheets. Strikingly, the thickness of these nanosheets can be elaborately modulated ranging from 30 to 2 nm via varying Fe/Mn ratios, accordingly resulting in variation in the resultant phosphate adsorption performance. The uptake of phosphate onto these hierarchical microspheres shows that the obtained hierarchical iron containing MnO2 hollow microspheres possess markedly enhanced phosphate removal performance over undoped counterparts regardless of the removal rate or efficiency; meanwhile, the enhanced effect becomes more obvious with increasing iron amount due to the larger specific surface area and abundant active sites. In particular, the hierarchical MnO2 microspheres with 15 at% Fe incorporation are capable of removing completely low concentration phosphate (below 10 ppm) at a dosage of 0.5 g L-1. In addition, the as-obtained materials exhibit high sorption selectivity toward phosphate over other coexisting ions or dissolved organic matter (DOC) at high levels, which can be ascribed to the unique hierarchical structures and strong interaction between Mn/Fe sites and phosphate, as confirmed by Fourier-transform infrared (FT-IR) and X-ray photoelectron spectroscopy (XPS) analyses. Furthermore, the regenerated materials can be repeatedly used for five cycles without obvious degradation of performance, suggesting the sustainability of the adsorbents. By virtue of the high removal efficiency, fast adsorption kinetics, preferable sorption selectivity, as well as satisfactory recyclability, the obtained hierarchical iron containing MnO2 hollow microspheres will be promising in eliminating the phosphate pollution from eutrophic waters.
WOS关键词ONE-STEP SYNTHESIS ; ZIRCONIUM-OXIDE ; ADSORPTIVE REMOVAL ; HIGH-PERFORMANCE ; AQUEOUS-SOLUTION ; WATER-TREATMENT ; DRINKING-WATER ; PHOSPHORUS ; SPHERES ; NANOPARTICLES
WOS研究方向Chemistry ; Energy & Fuels ; Materials Science
语种英语
WOS记录号WOS:000385360300035
资助机构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 the Chinese Academy of Sciences ; CAS/SAFEA International Partnership Program for Creative Research Teams of the Chinese Academy of Sciences ; CAS/SAFEA International Partnership Program for Creative Research Teams of the Chinese Academy of Sciences ; CAS/SAFEA International Partnership Program for Creative Research Teams of the Chinese Academy of Sciences ; CAS/SAFEA International Partnership Program for Creative Research Teams of the Chinese Academy of Sciences ; CAS/SAFEA International Partnership Program for Creative Research Teams of the Chinese Academy of Sciences ; CAS/SAFEA International Partnership Program for Creative Research Teams of the Chinese Academy of Sciences ; CAS/SAFEA International Partnership Program for Creative Research Teams of the Chinese Academy of Sciences ; Hefei Science Center CAS(2015HSC-UE004) ; Hefei Science Center CAS(2015HSC-UE004) ; Hefei Science Center CAS(2015HSC-UE004) ; Hefei Science Center CAS(2015HSC-UE004) ; Hefei Science Center CAS(2015HSC-UE004) ; Hefei Science Center CAS(2015HSC-UE004) ; Hefei Science Center CAS(2015HSC-UE004) ; Hefei Science Center CAS(2015HSC-UE004) ; 51572263 ; 51572263 ; 51572263 ; 51572263 ; 51572263 ; 51572263 ; 51572263 ; 51572263 ; 51472246) ; 51472246) ; 51472246) ; 51472246) ; 51472246) ; 51472246) ; 51472246) ; 51472246) ; 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 the Chinese Academy of Sciences ; CAS/SAFEA International Partnership Program for Creative Research Teams of the Chinese Academy of Sciences ; CAS/SAFEA International Partnership Program for Creative Research Teams of the Chinese Academy of Sciences ; CAS/SAFEA International Partnership Program for Creative Research Teams of the Chinese Academy of Sciences ; CAS/SAFEA International Partnership Program for Creative Research Teams of the Chinese Academy of Sciences ; CAS/SAFEA International Partnership Program for Creative Research Teams of the Chinese Academy of Sciences ; CAS/SAFEA International Partnership Program for Creative Research Teams of the Chinese Academy of Sciences ; CAS/SAFEA International Partnership Program for Creative Research Teams of the Chinese Academy of Sciences ; Hefei Science Center CAS(2015HSC-UE004) ; Hefei Science Center CAS(2015HSC-UE004) ; Hefei Science Center CAS(2015HSC-UE004) ; Hefei Science Center CAS(2015HSC-UE004) ; Hefei Science Center CAS(2015HSC-UE004) ; Hefei Science Center CAS(2015HSC-UE004) ; Hefei Science Center CAS(2015HSC-UE004) ; Hefei Science Center CAS(2015HSC-UE004) ; 51572263 ; 51572263 ; 51572263 ; 51572263 ; 51572263 ; 51572263 ; 51572263 ; 51572263 ; 51472246) ; 51472246) ; 51472246) ; 51472246) ; 51472246) ; 51472246) ; 51472246) ; 51472246)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/22072]  
专题合肥物质科学研究院_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, Key Lab Mat Phys,Ctr Environm & Energy Nanomat, 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, Southport, Qld 4222, Australia
4.Chinese Univ Hong Kong, Sch Life Sci, Shatin, Hong Kong, Peoples R China
推荐引用方式
GB/T 7714		 Ge, Xiao,Song, Xiangyang,Ma, Yue,et al. Fabrication of hierarchical iron-containing MnO2 hollow microspheres assembled by thickness-tunable nanosheets for efficient phosphate removal[J]. JOURNAL OF MATERIALS CHEMISTRY A,2016,4(38):14814-14826.
APA Ge, Xiao.,Song, Xiangyang.,Ma, Yue.,Zhou, Hongjian.,Wang, Guozhong.,...&Wong, Po Keung.(2016).Fabrication of hierarchical iron-containing MnO2 hollow microspheres assembled by thickness-tunable nanosheets for efficient phosphate removal.JOURNAL OF MATERIALS CHEMISTRY A,4(38),14814-14826.
MLA Ge, Xiao,et al."Fabrication of hierarchical iron-containing MnO2 hollow microspheres assembled by thickness-tunable nanosheets for efficient phosphate removal".JOURNAL OF MATERIALS CHEMISTRY A 4.38(2016):14814-14826.

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来源：合肥物质科学研究院

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