Abstract
Considerable unique chemical properties of nanoparticles are related to their surface thermodynamic properties which mainly depend on their sizes. Herein, the theoretical relationships between partial molar surface thermodynamic properties as well as molar surface thermodynamic properties and size were derived, respectively. It was found that the ratio of molar surface thermodynamic properties to the corresponding partial molar surface thermodynamic properties for spherical nanoparticles is 3:2 during the dissolution process. In experiment, the standard dissolution equilibrium constants and the thermodynamic properties of nanovaterite with different sizes were obtained by determining the equilibrium conductivities in distilled water at different temperatures. Then, the surface thermodynamic properties were calculated, and the size dependence of the surface thermodynamic properties were discussed eventually. The results show that particle size has remarkable influence on the surface thermodynamic propertie...
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