Size effect on thermodynamic properties of CaMoO4 micro/nano materials and reaction systems |
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| Institution: | 1. Department of Physics, Arab American University, Jenin, Palestine;2. Department of Telecommunication Engineering, Arab American University, Jenin, Palestine;3. Faculty of Engineering, Atilim University, 06836 Ankara, Turkey;4. Metallurgical and Materials Engineering Dept., Marmara University, 34722 Istanbul, Turkey;1. Facultad de Ingeniería, Universidad Nacional de La Plata, Buenos Aires, Argentina;2. Centro de Investigaciones Ópticas de La Plata, CONICET-CIC, La Plata, Buenos Aires, Argentina;1. Centre for Advanced 2D Materials, National University of Singapore, Singapore 117546, Singapore;2. Center for Ion Beam Applications, Department of Physics, National University of Singapore, Singapore 117542, Singapore;3. Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), Innovis 08-03, 2 Fusionopolisway, Singapore 138634, Singapore;4. SUNAG Laboratory, Institute of Physics, Sachivalaya Marg, Bhubaneswar 751005, India;5. Department of Physics, National University of Singapore, Singapore 117542, Singapore;1. Ivan Franko National University of Lviv, Lviv, Ukraine;2. Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany;3. Lviv Polytechnic National University, Lviv, Ukraine;4. Institute for Scintillation Materials, Kharkiv, Ukraine;5. Institute of Nuclear Physics, Moscow State University, Moscow, Russia |
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| Abstract: | CaMoO4 micro/nano hollow spheres with three different sizes were prepared via a reverse-microemulsion route at room temperature. Through designing a novel thermochemical cycle, the relationship between thermodynamic properties of nano CaMoO4 and bulk CaMoO4 was built. Combined with in situ microcalorimetry, change regularities for the thermodynamic properties of the prepared CaMoO4 micro/nano materials and reaction systems were obtained. The results reveal that size effect has significant influence on thermodynamic properties of micro/nano materials and reaction systems. Along with the size decreasing, the standard molar enthalpy, standard molar Gibbs free energy and standard molar entropy of reaction of micro/nano reaction systems decreased, but the standard molar enthalpy of formation, standard molar Gibbs free energy of formation and standard molar entropy of micro/nano materials increased. |
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