Термодинамічний підхід до опису властивостей наночастинок та наносистем

• Дата: 2019
• Автори: Lobanov, V. V., Terebinska, M. I., Tkachuk, O. I.
• Формат: Стаття
• Мова: Російська
• Опубліковано: Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine 2019
• Теми: наночастинки; наносистемі; хімічний підхід; над молекула; хімічний потенціал; довжина хвилі де Бройля; мицелоутворення; агрегація; нанотермодинаміка; діаграма стану; лінія солідуса; лінія ліквидуса
• Онлайн доступ: https://surfacezbir.com.ua/index.php/surface/article/view/664
• Назва журналу: Surface

Conditions for the applicability of basic concepts of equilibrium and non-equilibrium thermodynamics to the description of nanoparticles and systems built of them are discussed in this review. Coherent interpretation of a nanoparticle as a chemical object allows one to classify both crystalline and amorphous nanoparticles of solids as well as their aggregates of the same nature and increasing size as homologous series; on the other hand, nanoparticles of the same composition but different size are classified as isomers. Such an interpretation is based on the concept of the chemical potential of nanoparticles which takes external energetic conditions into account automatically, while the internal energetic effect is considered in terms of the phase approach. Application of the chemical approach to describe the properties of micelles allowed one to provide an extended interpretation of the minimum-surface free-energy principle at a given volume of a solid. In the framework of chemical notions, application of the concepts of the nanothermodynamics allows one to determine the properties of small-sized nanoparticles and describe their behavior as nanosystems grow. Passing from phase diagrams of bulk materials to those of nanosystems requires a substantial revision of customary notions like “solubility”, “solidus”, “liqvidus”, “solubility diagram”, “nanophase diagram”, etc.