Synthesis, characterization and phenol adsorption of carbonyl- functionalized mesoporous silicas

Phuong Tran Thi Thu, Hang Tran Dieu, Hung Nguyen Phi, Nga Nguyen Thi Viet, Sung Jin Kim, Vien Vo

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

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 languageEnglish
Pages (from-to)295-300
Number of pages6
JournalJournal of Porous Materials
Volume19
Issue number3
DOIs
StatePublished - Jun 2012

Keywords

  • Functionalization
  • Mesoporous materials
  • Methacrylate
  • Phenol adsorption

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