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Entropy 2015, 17(5), 2741-2748; doi:10.3390/e17052741

Synthesis and Surface Thermodynamic Functions of CaMoO4 Nanocakes

School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, China
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Authors to whom correspondence should be addressed.
Academic Editors: A. Perez-Madrid and Iván Santamaría-Holek
Received: 25 January 2015 / Revised: 13 April 2015 / Accepted: 16 April 2015 / Published: 30 April 2015
(This article belongs to the Special Issue Nanothermodynamics)
View Full-Text   |   Download PDF [475 KB, uploaded 30 April 2015]   |  

Abstract

CaMoO4 nanocakes with uniform size and morphology were prepared on a large scale via a room temperature reverse-microemulsion method. The products were characterized in detail by X-ray powder diffraction, field-emission scanning electron microscopy, transmission electron microscopy, and high-resolution transmission electron microscopy. By establishing the relations between the thermodynamic functions of nano-CaMoO4 and bulk-CaMoO4 reaction systems, the equations for calculating the surface thermodynamic functions of nano-CaMoO4 were derived. Then, combined with in-situ microcalorimetry, the molar surface enthalpy, molar surface Gibbs free energy, and molar surface entropy of the prepared CaMoO4 nanocakes at 298.15 K were successfully obtained as (19.674 ± 0.017) kJ·mol−1, (619.704 ± 0.016) J·mol−1, and (63.908 ± 0.057) J·mol−1·K−1, respectively. View Full-Text
Keywords: nanothermodynamics; CaMoO4; nanocake; molar surface enthalpy; molar surface Gibbs free energy; molar surface entropy nanothermodynamics; CaMoO4; nanocake; molar surface enthalpy; molar surface Gibbs free energy; molar surface entropy
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Li, X.; Fan, G.; Huang, Z. Synthesis and Surface Thermodynamic Functions of CaMoO4 Nanocakes. Entropy 2015, 17, 2741-2748.

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