Adsorption kinetics of methyl violet onto TiO2 nanoparticles with different phases

Sh Jafari; S. Azizian; B. Jaleh

doi:10.1016/j.colsurfa.2011.05.030

Adsorption kinetics of methyl violet onto TiO₂ nanoparticles with different phases

Sh Jafari, S. Azizian^*, B. Jaleh

^*Corresponding author for this work

Not published at VTT

Bu-Ali Sina University

Research output: Contribution to journal › Article › Scientific › peer-review

38 Citations (Scopus)

Abstract

TiO₂ nanoparticles with different phase composition (anatase and rutile) were prepared from TiO₂P25 Degussa by heat treatment and were characterized with XRD and TEM methods. It was found that both the particle size and rutile to anatase phase ratio increases with temperature. The adsorption of methyl violet from aqueous solution onto the prepared TiO₂ nanoparticles with different was studied from kinetic point of view. The effect of phase composition on the adsorption kinetic was analyzed. The amount of adsorbed methyl violet reaches to its maximum vale within 100min. It was found that the adsorption onto TiO₂ with mixed phases of anatase and rutile is reversible while onto pure rutile phase is irreversible.

Original language	English
Pages (from-to)	618-623
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	384
Issue number	1-3
DOIs	https://doi.org/10.1016/j.colsurfa.2011.05.030
Publication status	Published - 5 Jul 2011
MoE publication type	A1 Journal article-refereed

Keywords

Adsorption
Desorption
Kinetics
Methyl violet
Nanoparticle

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10.1016/j.colsurfa.2011.05.030

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abstract = "TiO2 nanoparticles with different phase composition (anatase and rutile) were prepared from TiO2P25 Degussa by heat treatment and were characterized with XRD and TEM methods. It was found that both the particle size and rutile to anatase phase ratio increases with temperature. The adsorption of methyl violet from aqueous solution onto the prepared TiO2 nanoparticles with different was studied from kinetic point of view. The effect of phase composition on the adsorption kinetic was analyzed. The amount of adsorbed methyl violet reaches to its maximum vale within 100min. It was found that the adsorption onto TiO2 with mixed phases of anatase and rutile is reversible while onto pure rutile phase is irreversible.",

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AU - Jafari, Sh

AU - Azizian, S.

AU - Jaleh, B.

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Y1 - 2011/7/5

N2 - TiO2 nanoparticles with different phase composition (anatase and rutile) were prepared from TiO2P25 Degussa by heat treatment and were characterized with XRD and TEM methods. It was found that both the particle size and rutile to anatase phase ratio increases with temperature. The adsorption of methyl violet from aqueous solution onto the prepared TiO2 nanoparticles with different was studied from kinetic point of view. The effect of phase composition on the adsorption kinetic was analyzed. The amount of adsorbed methyl violet reaches to its maximum vale within 100min. It was found that the adsorption onto TiO2 with mixed phases of anatase and rutile is reversible while onto pure rutile phase is irreversible.

AB - TiO2 nanoparticles with different phase composition (anatase and rutile) were prepared from TiO2P25 Degussa by heat treatment and were characterized with XRD and TEM methods. It was found that both the particle size and rutile to anatase phase ratio increases with temperature. The adsorption of methyl violet from aqueous solution onto the prepared TiO2 nanoparticles with different was studied from kinetic point of view. The effect of phase composition on the adsorption kinetic was analyzed. The amount of adsorbed methyl violet reaches to its maximum vale within 100min. It was found that the adsorption onto TiO2 with mixed phases of anatase and rutile is reversible while onto pure rutile phase is irreversible.

KW - Adsorption

KW - Desorption

KW - Kinetics

KW - Methyl violet

KW - Nanoparticle

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JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

IS - 1-3

ER -

Adsorption kinetics of methyl violet onto TiO₂ nanoparticles with different phases

Abstract

Keywords

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