YIC-IR  > 中科院海岸带环境过程与生态修复重点实验室  > 期刊论文
其他题名: Preparation and evaluation of shell-core structured Fe3 O4/MnO2 magnetic adsorbent for Pb ( Ⅱ ) removal from aqueous solutions
作者: 张晓蕾 ; 陈静 ; 韩京龙 ; 张高生
刊名: 环境科学学报
ISSN号: 0253-2468
出版日期: 2013
卷号: 33, 期号:10, 页码:2730-2736
关键词: 壳-核结构 ; Fe3O4/MnO2 ; 磁性吸附剂 ; ; 吸附
学科分类: 环境污染化学
产权排序: 烟台大学环境与材料工程学院;中国科学院烟台海岸带研究所;中国科学院海岸带环境过程重点实验室;山东省海岸带环境过程重点实验室;
通讯作者: 张高生
作者部门: 中国科学院海岸带环境过程与生态修复重点实验室
中文摘要: 采用共沉淀法制备了具有壳-核结构的磁性吸附剂Fe3O4/MnO2,对其性质进行了系统表征,并对其铅吸附行为进行了初步研究.透射电镜(TEM)结果表明,Fe3O4/MnO2为大小不规则的纳米级细小颗粒.X-射线衍射仪(XRD)表征结果表明,Fe3O4/MnO2具有尖晶石的结构.振动样品磁强计(VSM)测得比饱和磁化强度为54.7 A·m2·kg-1,吸附剂磁性较强,易于磁分离;BET比表面积为76.5 m2·g-1.吸附试验结果表明,Fe3O4/MnO2对铅具有良好的去除效果(特别是在低平衡浓度情况下),最大吸附量为142.0 mg·g-1(pH=5.0);Langmuir等温线能更好地拟合Fe...
英文摘要: An adsorbent with Fe3O4 as magnetic core and MnO2 as shell was prepared by co-precipitation process. The adsorbent was characterized using multiple techniques and its performance for Pb(II) removal from aqueous solution was investigated. The TEM image indicated thai the shape of nanosized Fe3 O4/MnO2 particles was irregular. X-ray powder diffraction (XRD) analysis showed that the magnetic phase in Fe3 O4/MnO2 was spinel magnetite. The adsorbent has a highly specific saturation magnetization of 54.7 A· m2· kg ^- 1 and a specific surface area of 76.5 m2· g ^- 1. The results of batch sorption experiments suggested that the Fe3 O4/MnO2 magnetic adsorbent was effective for Pb (II) removal from water, particularly at low equilibrium concentration. The isotherm data was well fitted by Langmuir model (R2 = 0. 852) with a maximal Pb adsorption capacity of 142.0 mg· g^- 1 at pH 5.0, The adsorption of Pb(II) was very fast and over 80% of the equilibrium sorption capacity was achieved within 30 rain. The pseudo-second order model (R2 =0. 959) was more suitable to describe adsorption kinetic data. The Pb(II) adsorption increased with increasing values of solution pH and was not significantly affected by the change of ionic strength.
收录类别: CSCD
语种: 中文
Citation statistics:
内容类型: 期刊论文
Appears in Collections:中科院海岸带环境过程与生态修复重点实验室_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
壳-核结构Fe_3O_4MnO_2磁性吸附剂的制备、表征及铅吸附去除研究.pdf(877KB)----开放获取--View Download

Recommended Citation:
张晓蕾,陈静,韩京龙,等. 壳-核结构Fe_3O_4/MnO_2磁性吸附剂的制备、表征及铅吸附去除研究[J]. 环境科学学报,2013,33(10):2730-2736.
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[张晓蕾]'s Articles
[陈静]'s Articles
[韩京龙]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[张晓蕾]‘s Articles
[陈静]‘s Articles
[韩京龙]‘s Articles
Related Copyright Policies
Social Bookmarking
Add to CiteULike Add to Connotea Add to Add to Digg Add to Reddit
文件名: 壳-核结构Fe_3O_4MnO_2磁性吸附剂的制备、表征及铅吸附去除研究.pdf
格式: Adobe PDF
所有评论 (0)
内 容:
Email:  *
验证码:   刷新
标 题:
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.



Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院烟台海岸带研究所 - Feedback
Powered by CSpace