Abstract
Carbonyl-functionalized mesoporous silicas have been synthesized by co-condensation of tetraethoxysilane and varying contents of 3-(trimethoxysilyl)propyl methacrylate in acidic medium with the block copolymer Pluronic 123 as a structure directing agent. The functionalized materials were characterized by PXRD, TEM, SEM, IR, and N 2 adsorption-desorption at 77 K. Adsorption of phenol in aqueous solution on the materials has been investigated. The experimental results showed that carbonyl- functionalized mesoporous silicas possess strong adsorption ability for phenol with interaction of O-H...O = C hydrogen bond. The adsorption data are fitted to Langmuir Isotherms and a maximum adsorption capacity calculated from the Langmuir equation can reach 0.87 mmol of phenol/g. The effect of the pH on phenol adsorption has been studied.
| Original language | English |
|---|---|
| Pages (from-to) | 295-300 |
| Number of pages | 6 |
| Journal | Journal of Porous Materials |
| Volume | 19 |
| Issue number | 3 |
| DOIs | |
| State | Published - Jun 2012 |
Bibliographical note
Funding Information:Acknowledgments Financial support from the National Foundation for Science and Technology Development of Viet Nam (NAFOSTED, 104.03.06.09) is gratefully acknowledged.
Keywords
- Functionalization
- Mesoporous materials
- Methacrylate
- Phenol adsorption