Sorption of Hydrophobic Molecules by Organic/Inorganic Mesostructures

Hanna, Khalil; Beurroies, Isabelle; Denoyel, Renaud; Desplantier‐Giscard, Delphine; Galarneau, Anne; Renzo, Francesco Di

doi:10.1006/jcis.2002.8484

Cited by 56 publications

(32 citation statements)

References 23 publications

(23 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The different silica adsorbents (purely siliceous) and catalysts (materials containing Al in the framework) used in this work were prepared in the presence of either hexadecyl trimethyl ammonium cations (2.3 and 2.5 MCM-41) in some cases accompanied by a swelling agent as hexadecyl dimethyl amine (3.7, 4.4 and 4.6 MCM-41) or trimethylbenzene [14] (8.4 and 9.3 MCM-41).…”

Section: Methodsmentioning

confidence: 99%

Heterogeneous catalysis and confinement effects

Pariente

Trens

Fajula

et al. 2006

Applied Catalysis A: General

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 99%

Heterogeneous catalysis and confinement effects

Pariente

Trens

Fajula

et al. 2006

Applied Catalysis A: General

View full text Add to dashboard Cite

“…So, micron-sized inorganic materials combining with surfactants are considered as effective adsorbents to extract organic contaminants from aqueous solutions [14][15][16][17][18][19][20][21].…”

Section: Role Of C N Tab In Tio 2 /C N Tab Nanoskeleton On Adsorptionmentioning

confidence: 99%

“…In recent years, organic/inorganic hybrid porous materials such as organic molecules-grafted mesoporous materials have attracted attention as effective adsorbents for removal of organic contaminants from water [5][6][7][8][9][10][11][12][13]. In addition, several reports describe that mesoporous silica materials (MCM-41) containing surfactant template also act as effective adsorbents for the removal of organic contaminants from aqueous solutions [14][15][16][17][18][19][20][21]. In the organic/inorganic hybrid adsorbents, inorganic parts act as adsorption substrate and provide large surface area.…”

Section: Introductionmentioning

confidence: 99%

Titania/C TAB Nanoskeleton as adsorbent and photocatalyst for removal of alkylphenols dissolved in water

Sakai

Loves

Okada

et al. 2013

Journal of Hazardous Materials

View full text Add to dashboard Cite

We report here on the removal of alkylphenols (phenol, 4-n-propylphenol, 4-nheptylphenol and 4-nonylphenol) dissolved in water using the composite particles of nanocrystalline titania and alkyltrimethylammonium bromide (C n H 2n+1 N(CH 3 ) 3 Br, C n TAB; n = 12, 14, 16 and 18) (named as TiO 2 /C n TAB Nanoskeleton) as adsorbents and photocatalysts. In particular, the adsorption of alkylphenols onto TiO 2 /C n TAB Nanoskeleton in water was investigated in terms of hydrophobic interaction between alkylphenols and C n TAB, surface area, pore structure and crystal size of TiO 2 /C n TAB Nanoskeleton.We revealed that C n TAB incorporated in the TiO 2 /C n TAB Nanoskeleton promotes the adsorption of alkylphenols onto TiO 2 /C n TAB Nanoskeleton due to the hydrophobic interaction between alkylphenols and C n TAB.On the other hand, the surface area, pore structure and crystal size of TiO 2 /C n TAB Nanoskeleton did not affect the adsorption of alkylphenols onto TiO 2 /C n TAB Nanoskeleton. We also found that the alkylphenols dissolved in water were completely removed by the combination of adsorption and photocatalytic degradation by the TiO 2 /C n TAB Nanoskeleton under UV irradiation. These results prove that the TiO 2 /C n TAB Nanoskeleton acts as in tandem an adsorbent and a photocatalyst for removal of alkylphenols dissolved in water.

show abstract

“…MB is a basic dye and has basic characteristics and therefore is expected to interact strongly with the anionic head groups of the surfactants (RCOO − ). In the contrary, RB and RY contain anionic clusters and are not expected to interact with the anionic head groups of the surfactants where the number of these clusters may explain the differences between RB and RY adsorption capacities (Hanna et al, 2002). Upon modification, microemulsions may also fill the pores of the calcined diatomite; as a result, dye molecules may dissolve in the hydrophobic core of the surfactants (Fig.…”

Section: Mechanism Of Adsorptionmentioning

confidence: 96%

Enhanced Dye Adsorption by Microemulsion-Modified Calcined Diatomite (μE-CD)

Khraisheh

Alg-Houti²

2005

Adsorption

View full text Add to dashboard Cite

This study attempted to improve the adsorption performance of calcined diatomite for the removal of colour from wastewaters through modification with microemulsions. The surface area, pH ZPC , Fourier transform infrared (FTIR) of calcined diatomite and µE-CD were studied. It is found that an increase in the BET surface area, pH ZPC and total pore volume after modification was obtained. A decrease in average pore volume was observed after modification. This suggests that the pore opening deceased to be in the micro-and meso-pore region hence the adsorption capacity for the modified adsorbent will be enhanced by reducing the escaping of dye molecules. The influence of concentration, pH and particle size on the adsorption capacities of methylene blue (MB), hydrolysed reactive black (RB) and hydrolysed reactive yellow (RY) was investigated. It was concluded from FTIR and pH analysis that the predominant mechanism of RY molecules onto µE-CD is by an electrostatic attraction between the carboxylate anion and the dye. In the case of MB and RB, the adsorption mechanism could be a combination of different mechanisms such as electrostatic attraction, capturing by microemulsion micelles in the pores of the calcined diatomite or the hydrophobic attraction. The adsorption capacities were higher than unmodified calcined diatomite. In the case of adsorption of MB molecules, a high adsorption capacity onto µE-CD was obtained.

show abstract

Sorption of Hydrophobic Molecules by Organic/Inorganic Mesostructures

Cited by 56 publications

References 23 publications

Heterogeneous catalysis and confinement effects

Heterogeneous catalysis and confinement effects

Titania/C TAB Nanoskeleton as adsorbent and photocatalyst for removal of alkylphenols dissolved in water

Enhanced Dye Adsorption by Microemulsion-Modified Calcined Diatomite (μE-CD)

Contact Info

Product

Resources

About