Effects of surface properties and solvent pH values on the adsorption/desorption abilities of mesoporous SBA-15 to Methylene blue molecules

Liu, Hui, Li, Hongliang, Wang, Mengxue, Sang, Jingjing and Zhao, Xiu Song (2012). Effects of surface properties and solvent pH values on the adsorption/desorption abilities of mesoporous SBA-15 to Methylene blue molecules. In: Advances in Environmental Science and Engineering, Pts 1-6. 1st International Conference on Energy and Environmental Protection (ICEEP 2012), Hohhot Peoples R China, (352-355). Jun 23-24, 2012. doi:10.4028/www.scientific.net/AMR.518-523.352


Author Liu, Hui
Li, Hongliang
Wang, Mengxue
Sang, Jingjing
Zhao, Xiu Song
Title of paper Effects of surface properties and solvent pH values on the adsorption/desorption abilities of mesoporous SBA-15 to Methylene blue molecules
Conference name 1st International Conference on Energy and Environmental Protection (ICEEP 2012)
Conference location Hohhot Peoples R China
Conference dates Jun 23-24, 2012
Proceedings title Advances in Environmental Science and Engineering, Pts 1-6   Check publisher's open access policy
Place of Publication Pfaffikon Switzerland
Publisher Scientific.Net
Publication Year 2012
Sub-type Fully published paper
DOI 10.4028/www.scientific.net/AMR.518-523.352
Open Access Status
ISBN 978-3-03785-416-7
ISSN 1022-6680
1662-8985
Volume 518-523
Start page 352
End page 355
Total pages 4
Language eng
Abstract/Summary Methylene blue (MB) was used as model molecule to investigate the effects of surface properties and solvent pH values on the adsorption and desorption (or release) behaviors of mesoporous SBA-15 materials. It was found that the treatment of SBA-15 with a pH 7.8 aqueous solution can enhance the adsorption rate and capacity in comparison with the pristine SBA-15. The effect of pH values on MB releasing from the weak base treated SBA-15 and the pristine one have been studied and been compared in pH values range from 0.5 to 7.0. Both of them showed a maximum releasing rate at about pH 2 and all of the treated SBA-15 samples showed a higher releasing quantity than the pristine ones. The influence mechanisms of base treatment on the adsorption ability and that of pH values on the releasing properties of SBA-15 samples have been analyzed and been discussed based on the composition, the morphology, the surface area and pore size distribution and adsorption/desorption measurements.
Keyword Mesoporous Silica
Sba-15
Adsorption
Release
pH effect
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Conference Paper
Collection: School of Chemical Engineering Publications
 
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