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Preparation of MnO2-Al2O3 adsorbent with large specific surface area for fluoride removal
Xu, Naicai1,2,3; Liu, Zhong1; Bian, Shaoju1; Dong, Yaping1; Li, Wu1
2016-08-01
发表期刊PARTICUOLOGY
卷号27页码:66-71
文章类型Article
摘要MnO2-Al2O3 (MOAO) binary nanocomposite with a 1:3 MnO2 to Al2O3 molar ratio was synthesized by impregnation technique using mesoporous alumina (MA) precursor. The MOAO product consisted of MA and amorphous MnO2. The manganese valence in MOAO was +4, indicative of MnO2 being coated on the surface of MA during the impregnation process. MOAO had a large specific surface area (385.266 m(2)/g) and wormhole-like mesoporous structure. The average pore size, which could be precisely controlled over the range of 3.4-4.1 nm. The optimum removal of fluoride was obtained when the initial pH was in the range of 4-10. The defluorination efficiency of MOAO was far superior to that of MA when the initial fluoride concentration exceeded 40 mg/L. The large surface area and bimodal porous structure of MOAO after coating MnO2 may be responsible for the high removal efficiency in the defluorination process. (C) 2016 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
关键词Alumina Mno2-al2o3 Mesoporous Structure Structure Properties Adsorption
WOS标题词Science & Technology ; Technology
关键词[WOS]ACTIVATED ALUMINA ; AQUEOUS-SOLUTION ; DRINKING-WATER ; WASTE-WATER ; ADSORPTION ; DEFLUORIDATION ; SORBENT ; IONS
收录类别SCI
语种英语
WOS研究方向Engineering ; Materials Science
WOS类目Engineering, Chemical ; Materials Science, Multidisciplinary
WOS记录号WOS:000378959000007
引用统计
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/6331
专题青海盐湖研究所知识仓储
盐湖资源综合利用工程技术中心
盐湖资源与化学实验室
作者单位1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Peoples R China
2.Qinghai Normal Univ, Dept Chem, Xining 810008, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Xu, Naicai,Liu, Zhong,Bian, Shaoju,et al. Preparation of MnO2-Al2O3 adsorbent with large specific surface area for fluoride removal[J]. PARTICUOLOGY,2016,27:66-71.
APA Xu, Naicai,Liu, Zhong,Bian, Shaoju,Dong, Yaping,&Li, Wu.(2016).Preparation of MnO2-Al2O3 adsorbent with large specific surface area for fluoride removal.PARTICUOLOGY,27,66-71.
MLA Xu, Naicai,et al."Preparation of MnO2-Al2O3 adsorbent with large specific surface area for fluoride removal".PARTICUOLOGY 27(2016):66-71.
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