The Interfacial Free Energy of Nematogen Droplets in an Isotropic Matrix: Determination of its Temperature Dependence from Coalescence Kinetics

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.

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Corrigendum to ‘Layering misalignment and negative temperature dependence of interfacial free energy of B2-liquid interfaces in a glass forming system’ [Acta Mater. 219 (2021) 117259]

Acta Materialia ◽

10.1016/j.actamat.2021.117525 ◽

2022 ◽

Vol 224 ◽

pp. 117525

Author(s):

Lei Wang ◽

Jeffrey J. Hoyt

Keyword(s):

Free Energy ◽

Temperature Dependence ◽

Negative Temperature ◽

Interfacial Free Energy ◽

Liquid Interfaces ◽

Glass Forming ◽

Acta Mater

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Temperature dependence of the crystal-liquid interfacial free energy and the endpoint of the melting line

The Journal of Chemical Physics ◽

10.1063/1.4837695 ◽

2013 ◽

Vol 139 (22) ◽

pp. 224703 ◽

Cited By ~ 16

Author(s):

Vladimir G. Baidakov ◽

Sergey P. Protsenko ◽

Azat O. Tipeev

Keyword(s):

Free Energy ◽

Temperature Dependence ◽

Interfacial Free Energy ◽

Melting Line

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Межфазная энергия на границе металлический кристалл--расплав

Физика твердого тела ◽

10.21883/ftt.2018.07.46108.010 ◽

2018 ◽

Vol 60 (7) ◽

pp. 1270 ◽

Cited By ~ 1

Author(s):

Л.П. Арефьева ◽

И.Г. Шебзухова

Keyword(s):

Experimental Data ◽

Free Energy ◽

Transition Metal ◽

Temperature Dependence ◽

Size Dependence ◽

Interfacial Free Energy ◽

Nanocrystal Size ◽

Metal Nanocrystals

AbstractThe technique for estimating the interfacial free energy of transition-metal nanocrystals and its anisotropy at the interface with their melts has been developed. The expression for the coordinate of the Gibbs’ interface, which takes into account the size dependence, has been derived. The interfacial free energy of crystal faces at the interface with the related melts of monomorphic 4d and 5d metals decreases nonlinearly with a decrease in the nanocrystal size and, at a certain size, disappears. At the nanocrystal radius of more than 10 nm, the interfacial free energy of the faces approaches that for a macrocrystal. The temperature dependence of the interfacial free energy at the crystal–melt interface is almost linear. The technique developed is shown to be in agreement with the known experimental data for mono- and polycrystals and applicable for estimating the orientational, temperature, and size dependences of the interfacial free energy at the interfaces of nano-, micro-, and macrocrystals with their melts.

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