Adsorption kinetics of methyl violet onto TiO2 nanoparticles with different phases

Sh Jafari, Saeid Azizian, Babak Jaleh

Research output: Contribution to journalArticleScientificpeer-review

Abstract

TiO2 nanoparticles with different phase composition (anatase and rutile) were prepared from TiO(2)P25 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 100 min. It was found that the adsorption onto TiO2 with mixed phases of anatase and rutile is reversible while onto pure rutile phase is irreversible. (C) 2011 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)618-623
Number of pages6
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume384
Issue number1-3
DOIs
Publication statusPublished - 5 Jul 2011
MoE publication typeA1 Journal article-refereed

Keywords

  • Adsorption
  • Desorption
  • Kinetics
  • TiO2
  • Nanoparticle
  • Methyl violet
  • TITANIUM-DIOXIDE
  • ACTIVATED CARBON
  • DYES
  • REMOVAL
  • TEMPERATURE
  • EQUILIBRIUM
  • MECHANISM
  • SORPTION
  • PERLITE
  • SURFACE

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