Journal of Surface Science and Technology

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Adsorption of Congored in Cationic Langmuir- Blodgett Films : Spectroscopic Investigations


Affiliations
1 Department of Physics, Tripura University, Suryamaninagar-799 022, Tripura, India
     

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The present paper reports the incorporation of an anionic water soluble dye congo red (CR) in the cationic octadecylamine (ODA) Langmuir-Blodgett (LB) films. ATR-FTIR spectroscopy confirms the presence of CR molecules in the adsorbed LB films. The adsorption kinetics of the CR molecules onto ODA LB films have been demonstrated by UV-Vis absorption spectroscopy. Comparison of fitted curve of the reaction kinetics to that of the observed one reveals that the reaction kinetics between CR and ODA LB films is of first order kinetic process.

Keywords

Langmuir-Blodgett, Layer-By-Layer, ATR-FTIR, SEM, Reaction Kinetics.
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  • Adsorption of Congored in Cationic Langmuir- Blodgett Films : Spectroscopic Investigations

Abstract Views: 334  |  PDF Views: 1

Authors

S. A. Hussain
Department of Physics, Tripura University, Suryamaninagar-799 022, Tripura, India
J. Bhattacharjee
Department of Physics, Tripura University, Suryamaninagar-799 022, Tripura, India
S. Chakraborty
Department of Physics, Tripura University, Suryamaninagar-799 022, Tripura, India
D. Bhattacharjee
Department of Physics, Tripura University, Suryamaninagar-799 022, Tripura, India

Abstract


The present paper reports the incorporation of an anionic water soluble dye congo red (CR) in the cationic octadecylamine (ODA) Langmuir-Blodgett (LB) films. ATR-FTIR spectroscopy confirms the presence of CR molecules in the adsorbed LB films. The adsorption kinetics of the CR molecules onto ODA LB films have been demonstrated by UV-Vis absorption spectroscopy. Comparison of fitted curve of the reaction kinetics to that of the observed one reveals that the reaction kinetics between CR and ODA LB films is of first order kinetic process.

Keywords


Langmuir-Blodgett, Layer-By-Layer, ATR-FTIR, SEM, Reaction Kinetics.