Properties of the mixed adsorption layer: neutral detergent-tetramethylthiourea at interface electrode/solution

Jolanta NIESZPOREK; Dorota SIENKO; Dorota GUGALA-FEKNER

Article Details

Properties of the mixed adsorption layer: neutral detergent-tetramethylthiourea at interface electrode/solution

Authors:

Jolanta NIESZPOREK | Dorota SIENKO | Dorota GUGALA-FEKNER

Publisher:

TUBITAK

Journal:

Turkish Journal of Chemistry 2012 Vol.36 Issue 6, pp.841-851

Document Type:

Article

Publication Date:

5/2012

Document Language:

Turkish

Document ID (Org No.):

2000727520

Frequency:

Bimonthly

eISSN:

1303-6130

pISSN:

1300-0527

Abstract:

 

The mixed adsorption layers of tetramethylthiourea and a  neutral detergent formed at the electrode surface in 1 M NaClO4 are  described in this paper.  The systems were characterized by the  measurement of differential capacity, zero charge potential, and  surface tension at the same potential.  The data were analyzed to  obtain the surface pressure and relative surface excess of  tetramethylthiourea as a function of electrode charge and bulk  concentration of the studied compounds.  The values of the lateral  interaction parameters, obtained in the presence and in the absence of  decanoyl-N-methylglucamide (C17H35NO6), change differently  depending on the isotherm used, but D G° values were  clearly smaller in the presence of C17H35NO6.  Electrostatic  parameters of the inner layer were assigned.  A compensation for the  inhibition and accelerating effect was obtained for the bulk  concentrations ratio cTMTU:cdetergent \approx 13.3.  For  cTMTU > 0.01 M the acceleration of Zn2+ electroreduction  appeared.

 

The mixed adsorption layers of tetramethylthiourea and a  neutral detergent formed at the electrode surface in 1 M NaClO4 are  described in this paper.  The systems were characterized by the  measurement of differential capacity, zero charge potential, and  surface tension at the same potential.  The data were analyzed to  obtain the surface pressure and relative surface excess of  tetramethylthiourea as a function of electrode charge and bulk  concentration of the studied compounds.  The values of the lateral  interaction parameters, obtained in the presence and in the absence of  decanoyl-N-methylglucamide (C17H35NO6), change differently  depending on the isotherm used, but D G° values were  clearly smaller in the presence of C17H35NO6.  Electrostatic  parameters of the inner layer were assigned.  A compensation for the  inhibition and accelerating effect was obtained for the bulk  concentrations ratio cTMTU:cdetergent \approx 13.3.  For  cTMTU > 0.01 M the acceleration of Zn2+ electroreduction  appeared.

Article Details

Properties of the mixed adsorption layer: neutral detergent-tetramethylthiourea at interface electrode/solution

Authors: Jolanta NIESZPOREK | Dorota SIENKO | Dorota GUGALA-FEKNER

Publisher: TUBITAK

Journal: Turkish Journal of Chemistry 2012 Vol.36 Issue 6, pp.841-851

Document Type: Article

Publication Date: 5/2012

Document Language: Turkish

Document ID (Org No.): 2000727520

Frequency: Bimonthly

eISSN: 1303-6130

pISSN: 1300-0527

Issues

Authors:

Jolanta NIESZPOREK | Dorota SIENKO | Dorota GUGALA-FEKNER

Publisher:

TUBITAK

Journal:

Turkish Journal of Chemistry 2012 Vol.36 Issue 6, pp.841-851

Document Type:

Article

Publication Date:

5/2012

Document Language:

Turkish

Document ID (Org No.):

2000727520

Frequency:

Bimonthly

eISSN:

1303-6130

pISSN:

1300-0527