Size, shape and temperature dependent surface energy of binary alloy nanoparticles

被引：30

作者：

Jabbareh, Mohammad Amin ^{[1
]}

机构：

[1] Hakim Sabzevari Univ, Fac Engn, Dept Mat Engn, POB 9617976487, Sabzevar, Iran

来源：

APPLIED SURFACE SCIENCE | 2017年 / 426卷

关键词：

Surface energy; Alloy nanoparticle; Size effect; Shape effect; PHASE-DIAGRAM; STABILITY; TENSION; MODEL;

D O I：

10.1016/j.apsusc.2017.07.242

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Surface energy has an important role in determining the properties of nanoparticles. Even though, extensive research has been done on the surface energy of pure nanoparticles, the surface energy of alloy nanoparticles has not been considered enough. In this work, based on the liquid drop model for surface energy of pure nanoparticles and Butler's equation, a model for size dependent surface energy of alloy nanoparticles has been developed. In addition to size and concentration, the model can describe the effects of shape and temperature on surface energy of alloy nanoparticles. Cu - Ag and Cu - Au systems have been studied as two examples and the results have been compared with other theoretical models and available simulated data. Reasonable agreements between the results were observed. The results show that the decreasing particle size decreases surface energy of alloy nanoparticles but decreasing temperature and shape factor increases the value of surface energy. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：1094 / 1099

页数：6

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