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室温条件下,采用反相微乳液法制备了一系列不同粒度的八面体纳米CdMoO4,并对其组成、结构及形貌进行了表征.基于纳米CdMoO4与块体CdMoO4热力学性质的本质差异,结合化学热力学基本理论与热动力学原理,导出了获取纳米CdMoO4表面热力学性质的关系式;在此基础上,利用原位微量热技术成功获得了所制备的不同粒度八面体纳米CdMoO4的表面热力学函数,如比表面Gibbs自由能、比表面焓和比表面熵.本文为获取纳米材料表面热力学函数提供了一种有效而普适的新方法.
At room temperature, a series of octahedral nano-CdMoO4 with different particle sizes were prepared by reverse microemulsion method, and its composition, structure and morphology were characterized.According to the essential difference of the thermodynamic properties of nano-CdMoO4 and bulk CdMoO4, Based on the basic theory of thermodynamics and thermodynamics principle, the relationship between the surface thermodynamic properties of nanometer CdMoO4 and the surface thermodynamic properties of nanometer CdMoO4 has been derived. On the basis of this, the surface thermodynamic functions of nanocrystalline CdMoO4 with different particle sizes have been successfully obtained by in situ microcalorimetry Specific surface Gibbs free energy, specific surface enthalpy and specific surface entropy.This paper provides an effective and universal new method for obtaining the surface thermodynamic function of nanomaterials.