Organic dye adsorption on mesoporous hybrid gels

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

Adsorption of two organic dyes (alizarin red S and phenol red) on mesoporous silica and hybrid gels is investigated. The mesoporous gels are derived from tetraethoxysilane (TEOS), methyltriethoxysilane (MTES), vinyltriethoxysilane (VTES), propyltriethoxysilane (PTES), and phenyltriethoxysilane (PhTES). The experimental results demonstrate that the adsorption capacity of the hybrid gels is much higher than that of the pure silica gel and increases as the gel surface becomes more hydrophobic. This suggests that the organic dye adsorption is governed mainly by the hydrophobic interaction between the organic dyes and the gel surface. Langmuir and Toth isotherm models are also tested against the experimental isotherm data.

Original languageEnglish
Pages (from-to)277-282
Number of pages6
JournalChemical Engineering Journal
Volume102
Issue number3
DOIs
Publication statusPublished - 2004 Sep 15

Fingerprint

dye
Coloring Agents
Gels
Dyes
gel
adsorption
Adsorption
Isotherms
Alizarin
Phenolsulfonphthalein
isotherm
silica
Silica Gel
Silica gel
Silicon Dioxide
Phenols
Silica
phenol
Polymers

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

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title = "Organic dye adsorption on mesoporous hybrid gels",
abstract = "Adsorption of two organic dyes (alizarin red S and phenol red) on mesoporous silica and hybrid gels is investigated. The mesoporous gels are derived from tetraethoxysilane (TEOS), methyltriethoxysilane (MTES), vinyltriethoxysilane (VTES), propyltriethoxysilane (PTES), and phenyltriethoxysilane (PhTES). The experimental results demonstrate that the adsorption capacity of the hybrid gels is much higher than that of the pure silica gel and increases as the gel surface becomes more hydrophobic. This suggests that the organic dye adsorption is governed mainly by the hydrophobic interaction between the organic dyes and the gel surface. Langmuir and Toth isotherm models are also tested against the experimental isotherm data.",
author = "Zhijian Wu and Hyeonwoo Joo and Ahn, {Ik Sung} and Seungjoo Haam and Jung-Hyun Kim and Kangtaek Lee",
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Organic dye adsorption on mesoporous hybrid gels. / Wu, Zhijian; Joo, Hyeonwoo; Ahn, Ik Sung; Haam, Seungjoo; Kim, Jung-Hyun; Lee, Kangtaek.

In: Chemical Engineering Journal, Vol. 102, No. 3, 15.09.2004, p. 277-282.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Organic dye adsorption on mesoporous hybrid gels

AU - Wu, Zhijian

AU - Joo, Hyeonwoo

AU - Ahn, Ik Sung

AU - Haam, Seungjoo

AU - Kim, Jung-Hyun

AU - Lee, Kangtaek

PY - 2004/9/15

Y1 - 2004/9/15

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AB - Adsorption of two organic dyes (alizarin red S and phenol red) on mesoporous silica and hybrid gels is investigated. The mesoporous gels are derived from tetraethoxysilane (TEOS), methyltriethoxysilane (MTES), vinyltriethoxysilane (VTES), propyltriethoxysilane (PTES), and phenyltriethoxysilane (PhTES). The experimental results demonstrate that the adsorption capacity of the hybrid gels is much higher than that of the pure silica gel and increases as the gel surface becomes more hydrophobic. This suggests that the organic dye adsorption is governed mainly by the hydrophobic interaction between the organic dyes and the gel surface. Langmuir and Toth isotherm models are also tested against the experimental isotherm data.

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