Influence of surfactants on the fading of malachite green

• Authors: Adina Raducan , Alexandra Olteanu , Mihaela Puiu , Dumitru Oancea
• Languages of publication: EN

Abstracts

EN

The kinetics of the reaction between malachite green (MG) and sodium hydroxide (MG fading) was studied using a spectrophotometric method in the presence of two cationic surfactants, cetyl-benzyl-dimethyl-ammonium chloride (CBDAC) and hexadecyl-trimethylammonium bromide (HTAB) and one anionic surfactant, sodium dodecyl sulphate (SDS) at concentrations below and above critical micellar concentrations. The cationic surfactants have a catalytic effect, while the anionic surfactant has an inhibitory effect on the reaction. A kinetic model describing the influence of surfactant on reaction rate was developed. The results are discussed on the basis of electrostatic and hydrophobic interactions between the kinetic micelles and malachite green. [...]

Keywords

EN

Micellar catalysis; Malachite green fading; Kinetic micelles

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2008
• Volume: 6
• Issue: 1
• Pages: 89-92

Dates

published

1 - 3 - 2008

online

1 - 3 - 2008

Contributors

author

Adina Raducan

• Dept. of Physical Chemistry, Faculty of Chemistry, University of Bucharest, Bulevardul Regina Elisabeta 4-12, Bucharest, 030018, Romania

author

Alexandra Olteanu

• Dept. of Physical Chemistry, Faculty of Chemistry, University of Bucharest, Bulevardul Regina Elisabeta 4-12, Bucharest, 030018, Romania

author

Mihaela Puiu

• Dept. of Physical Chemistry, Faculty of Chemistry, University of Bucharest, Bulevardul Regina Elisabeta 4-12, Bucharest, 030018, Romania

author

Dumitru Oancea

• Dept. of Physical Chemistry, Faculty of Chemistry, University of Bucharest, Bulevardul Regina Elisabeta 4-12, Bucharest, 030018, Romania

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Identifiers

DOI

10.2478/s11532-007-0066-0