The Preparation and Adsorption Properties of Li+-Imprinted Hybrid Gels

DOI

10.2991/mmeceb-15.2016.86How to use a DOI?

Keywords

Li+-imprinting; Hybrid gel; Adsorption; Ion exchange

Abstract

Several different Li+-imprinted gels were prepared by different precursors. And the gels were characterized by textual properties and point of zero charges (PZCs). The adsorption of Li+ from their aqueous solutions by the gels was investigated. The surface areas of the gels were found to range from 60 to 633 m2/g depending on the gel composition. In general, most of the gels are microporous with a pore size smaller than 2 nm. The gels have PZCs ranging from 1.25 to 3.20 after acidification with HCl solution. The adsorption amount of Li+ was affected by the composition of different gels significantly. Different gels present different adsorption amount with the gel derived from aminopropyltriethoxysilane (APTES) and tetraethoxysilane (TEOS) having the highest adsorption amount of 0.25 mmol/g. Ion exchange should be an important mechanism for the adsorption with the size of lithium ions exactly fits the cavity of the gel adsorbents.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Xiushen Ye
AU  - Chaoming Quan
AU  - Shichun Zhang
AU  - Li Sun
AU  - Haining Liu
AU  - Zhijian Wu
PY  - 2015/12
DA  - 2015/12
TI  - The Preparation and Adsorption Properties of Li+-Imprinted Hybrid Gels
BT  - Proceedings of the 2015 2nd International Conference on Machinery, Materials Engineering, Chemical Engineering and Biotechnology
PB  - Atlantis Press
SP  - 435
EP  - 440
SN  - 2352-5401
UR  - https://doi.org/10.2991/mmeceb-15.2016.86
DO  - 10.2991/mmeceb-15.2016.86
ID  - Ye2015/12
ER  -