Influence of polymer-surfactant interactions on the reactivity of the Co(III)-Fe(II) redox couple

Journal of Colloid and Interface Science
Tapas MajumdarAmbikesh Mahapatra

Abstract

In continuation of our recent study on the inner sphere electron transfer reduction of the cobalt(III) complex, [Co(III)(NH(3))(5)N(3)]Cl(2) by Mohr's salt (Fe(II)), we have investigated the effect of neutral polymer (poly(ethylene glycol) with relative molecular mass 200, PEG 200)-surfactant (both cationic and non-ionic) mixture on the kinetics of the same reaction using spectrophotometric and conductometric techniques at 298 K. Both the cationic and non-ionic surfactants have undergone interaction with polymer. Experimental consequences reveal that the catalytic effect imposed by the polymer-surfactant complexes causes significant change of the kinetic activities of the reaction. The gradual enhancement and retardation of the rate have been found with gradual addition of PEG 200 and cationic surfactant respectively. An attempt has been taken to rationalize the experimental findings with proper correlation of the reported literature.

References

May 1, 1999·Journal of Colloid and Interface Science·D Zanette, V L Frescura
Nov 18, 2005·Journal of Colloid and Interface Science·Alexander PatistDinesh O Shah
Nov 17, 2006·Langmuir : the ACS Journal of Surfaces and Colloids·Tanushree ChakrabortySoumen Ghosh
Feb 22, 2007·The Journal of Physical Chemistry. B·Tanushree ChakrabortySoumen Ghosh
Mar 22, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Alok ChakrabartyNitin Chattopadhyay

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Citations

Jun 15, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Bappaditya NaskarSatya P Moulik

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