ChemInform Abstract: THE PONT OF ZERO CHARGE, DIFFERENTIAL CAPACITY OF THE ELECTRICAL DOUBLE LAYER AND INTERFACIAL FREE ENERGY AT TIN DIOXIDE-AQUEOUS SOLUTION INTERFACE

1978 ◽  
Vol 9 (18) ◽  
Author(s):  
K. C. RAY ◽  
S. KHAN
Keyword(s):  
Aqueous Solution ◽  
Free Energy ◽  
Double Layer ◽  
Electrical Double Layer ◽  
Tin Dioxide ◽  
Interfacial Free Energy ◽  
Differential Capacity ◽  
Solution Interface ◽  
Zero Charge

scholarly journals Determination of the Point of Zero Charge pH of Borosilicate Glass Surface Using Capillary Imbibition Method

2017 ◽  
Vol 9 (3) ◽  
pp. 67 ◽  
Author(s):  
Mumuni Amadu ◽  
Adango Miadonye
Keyword(s):  
Aqueous Solution ◽  
Free Energy ◽  
Borosilicate Glass ◽  
Present Method ◽  
Interfacial Free Energy ◽  
Point Of Zero Charge ◽  
Oxide Surface ◽  
Colloid Chemistry ◽  
Zero Charge

The point of zero charge pH of an oxide surface is a fundamental surface chemistry property or solids or metal oxides that determine the nature of interaction at the solid-aqueous solution interface. In colloid chemistry this physical parameter controls the evolution of the electric double layer as well as adsorption and desorption processes.In colloid chemistry a number of methods have been used for the determination of the point of zero charge pH of an oxide surface. This ranges from titrimetric to radiation chemistry approach that deals with scanning electron microscopy.In this study, the direct effect of aqueous solution acidity on the solid-liquid interfacial free energy and the consequence of this effect on spontaneous imbibition of aqueous solution into borosilicate glass have been exploited for the determination of the point of zero charge pH of this type of glass. What is new in this method is that while the traditional titration method relies on neutralization of surface charges, the present method relies on interfacial free energy changes due to aqueous solution pH changes and the effect of this on the wettability of borosilcate glass surface. Result of point of zero charge pH obtained from the present method has been compared with those obtained using traditional methods. The comparison shows close agreements and this proves the technique used in the present work as a novel method for the determination of the point of zero charge pH of oxide surfaces.

Electrical Double Layer Formation on Glassy Carbon in Aqueous Solution

2021 ◽  
pp. 138416
Author(s):  
Sofia B. Davey ◽  
Amanda P. Cameron ◽  
Kenneth G. Latham ◽  
Scott W. Donne
Keyword(s):  
Aqueous Solution ◽  
Double Layer ◽  
Glassy Carbon ◽  
Electrical Double Layer ◽  
Layer Formation

Overcharging and charge reversal in the electrical double layer around the point of zero charge

2010 ◽  
Vol 132 (5) ◽  
pp. 054903 ◽  
Author(s):  
G. Iván Guerrero-García ◽  
Enrique González-Tovar ◽  
Martín Chávez-Páez ◽  
Marcelo Lozada-Cassou
Keyword(s):  
Double Layer ◽  
Electrical Double Layer ◽  
Point Of Zero Charge ◽  
Charge Reversal ◽  
Zero Charge
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