Comparison of adsorptive features between silver ion and silver nanoparticles on nanoporous materials

被引:13
作者
Sim, Jae Hoon [1 ]
Umh, Ha Nee [1 ]
Shin, Hyeon Ho [1 ]
Sung, Hwa Kyung [1 ]
Oh, Seung Yeon [1 ]
Lee, Byung-Cheun [2 ]
Rengaraj, Selvaraj [3 ]
Kim, Younghun [1 ]
机构
[1] Kwangwoon Univ, Dept Chem Engn, Seoul 139701, South Korea
[2] Natl Inst Environm Res, Inchon 404708, South Korea
[3] Sultan Qaboos Univ, Dept Chem, Muscat 123, Oman
基金
新加坡国家研究基金会;
关键词
Porous materials; Removal of silver; Silver nanoparticles; Silver ion; Adsorption; MESOPOROUS ALUMINA; TEMPLATING METHOD; AQUEOUS-SOLUTION; WASTE-WATER; REMOVAL; RELEASE; ADSORBENTS; PARTICLES; CHEMISTRY; KINETICS;
D O I
10.1016/j.jiec.2013.11.019
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The removal of Ag+ or AgNPs released from nano-products or effluent of WTP is important to reduce the potential risk of AgNPs. In this work, we prepared bimodal nanoporous silica (BNS) to compare the removal efficiency of Ag+ and AgNP with unimodal nanoporous silica (NS). To determine the adsorption capacity of Ag+ and AgNPs on NS and BNS, isotherm and kinetics studies was carried out at different concentrations. The results showed BNS with a bimodal nanoporous structure and a large external surface showed a higher uptake capacity and faster adsorption rate. (C) 2013 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:2864 / 2869
页数:6
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