Size and Shape-Dependent Solubility of CuO Nanostructures

被引：22
|
作者：
Leitner, Jindrich [1 ]
Sedmidubsky, David [2 ]
Jankovsky, Ondrej [2 ]
机构：
[1] Univ Chem & Technol, Fac Chem Technol, Dept Solid State Engn, Tech 5, Prague 16628 6, Czech Republic
[2] Univ Chem & Technol, Fac Chem Technol, Dept Inorgan Chem, Tech 5, Prague 16628 6, Czech Republic
来源：
MATERIALS | 2019年 / 12卷 / 20期
关键词：
CuO; nanoparticles; solubility; thermodynamics; Ostwald-Freundlich equation; METAL-OXIDE NANOPARTICLES; COPPER-OXIDE; THERMODYNAMIC PROPERTIES; ZNO NANOPARTICLES; PHASE-EQUILIBRIA; AQUEOUS-SOLUTION; IN-VITRO; TOXICITY; DISSOLUTION; PARTICLES;
D O I：
10.3390/ma12203355
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：
In our theoretical study, the enhanced solubility of CuO nanoparticles in water saturated by air is predicted based on a simple thermodynamic model. CuO is considered in the form of nanoparticles with various shapes. The interfacial energy of a solid CuO/dilute aqueous solution interface was assessed by applying the average CuO surface energy and contact angle of a sessile drop of water. The equilibrium CuO solubility was calculated using Gibbs energy minimization technique. For the smallest spherical nanoparticles considered in this work (r = 2 nm), the solubility is significantly higher than the solubility of bulk material. In the case of cylindrical nanoparticles, the solubility increase is even more considerable. The CuO spherical nanoparticles solubility was also calculated using the Ostwald-Freundlich equation which is known to overestimate the solubility as discussed in this contribution.
引用
收藏
页数：10
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