Preparation of MnO2-Al2O3 adsorbent with large specific surface area for fluoride removal

ISL OpenIR > 青海盐湖研究所知识仓储

	Preparation of MnO2-Al2O3 adsorbent with large specific surface area for fluoride removal
	Xu, Naicai 1,2,3; Liu, Zhong1 ; Bian, Shaoju1 ; Dong, Yaping1 ; Li, Wu1
	2016-08-01
发表期刊	PARTICUOLOGY
卷号	27 页码:66-71
关键词	Alumina Mno2-al2o3 Mesoporous Structure Structure Properties Adsorption
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.
语种	英语
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
推荐引用方式 GB/T 7714	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.