NDLI: Effect of nanoparticle size on the thermal decomposition thermodynamics in theory and experiment

Content Provider	Springer Nature Link
Author	Li, Wenjiao Cui, Zixiang Duan, Huijuan Xue, Yongqiang
Copyright Year	2016
Abstract	Thermal decomposition reactions of nanoparticles are often concerned in the processes of preparation and application of nanomaterials. However, it is the nanoparticle size that leads to great difference in thermal decomposition thermodynamics between nanoparticles and corresponding bulk substances. In this paper, the decomposition model of a nanoparticle was established to investigate the theoretical size-dependent thermodynamics in nanoscale decomposition system, and the theoretical relations of the thermodynamic properties with particle size were, respectively, derived. In experiment, the decomposition thermodynamics of nanosized zinc carbonate particles was studied, and the influence regularities of particle size on thermodynamic quantities were obtained. The experimental results are in accordance with the corresponding theoretical thermodynamic relations. These results show that there is a striking effect of particle size on the decomposition thermodynamics. The thermodynamic properties decrease with the decrease of particle size, whereas the equilibrium constant and the molar heat capacity of reaction at constant volume increase; logarithm of the equilibrium constant, the heat capacity of reaction and the thermodynamic properties are linearly related to reciprocal of the particle diameter, respectively. In addition, the temperature coefficient of the heat capacity of reaction also has strong size dependence; that is, the temperature coefficient becomes smaller with the particle size decreasing.
Starting Page	1
Ending Page	12
Page Count	12
File Format	PDF
ISSN	09478396
Journal	Applied Physics A
Volume Number	122
Issue Number	2
e-ISSN	14320630
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-01-27
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Condensed Matter Physics Optical and Electronic Materials Nanotechnology Characterization and Evaluation of Materials Surfaces and Interfaces, Thin Films Operating Procedures, Materials Treatment
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Science

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