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Size-dependent of Melting Thermodynamic Properties of Selenium Nanowires in Theory and Experiment

Abstract

The melting thermodynamic properties of nanomaterials depend on the particle size and present great differences compared with the bulk counterparts. However, the current researches into melting thermodynamics are solely confined to nanoparticles, and it remains unclear about the size effect on the melting thermodynamic of nanowires. Herein, a core-shell model was proposed and the universal relations of size-dependent melting thermodynamic properties were derived to explain unique melting behaviors of nanowires. Experimentally, Se nanowires with different diameters were prepared by a precursor conversion method, and the melting thermodynamic properties were determined by differential scanning calorimetry. Both theoretical and experimental results demonstrate that the melting temperature, the melting enthalpy and the melting entropy decrease with the diameter decreasing, and all these physical quantities linearly vary with the inverse diameter. Furthermore, using the quantitative size-dependent thermodynamic theory of nanowires, we can explain and predict the melting behaviors in the preparations and applications of other nanowires.

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Publication details

The article was received on 30 Aug 2018, accepted on 28 Nov 2018 and first published on 28 Nov 2018


Article type: Paper
DOI: 10.1039/C8CE01466C
Citation: CrystEngComm, 2018, Accepted Manuscript
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    Size-dependent of Melting Thermodynamic Properties of Selenium Nanowires in Theory and Experiment

    J. Zhang, Q. Fu, Z. Cui and Y. Xue, CrystEngComm, 2018, Accepted Manuscript , DOI: 10.1039/C8CE01466C

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