GREEN SYNTHESIS OF SILVER NANOPARTICLES AND THEIR SPECTRAL PROPERTIES

• Дата: 2022
• Автори та афіліації: Оleksandra Berezhnytska — V.I.Vernadsky Institute of General and Inorganic Chemistry of NAS of Ukraine; Oleksandr Rohovtsov — V.I.Vernadsky Institute of General and Inorganic Chemistry of NAS of Ukraine; Olena Chyhyrynets — National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute»; Denys Snihur — InterChem, Odessa I. I. Mechnikov National University
• Ключові слова: keywords
• Автори: Berezhnytska , Оleksandra, Rohovtsov , Oleksandr, Chyhyrynets , Olena, Snihur, Denys
• Формат: Стаття
• Мова: Англійська
• Опубліковано: V.I.Vernadsky Institute of General and Inorganic Chemistry 2022
• Онлайн доступ: https://ucj.org.ua/index.php/journal/article/view/481
• Назва журналу: Ukrainian Chemistry Journal

Spherical silver nanoparticles were synthesized by the chemical condensation method using aloe vera or chamomile extracts as a reducing agent. Depending on the type of extracts and its concentration, the size of AgNpcs varied from 7 to 50 nm by simply adjusting the ratio of the starting reagents. These extracts show reducing properties due to the presence of carbonyl compounds in their composition, in particular organic acids. It is shown that regu­lation of concentrations and synthesis conditions allows control of particle size. A change in the synthesis conditions affects the position of the surface plasmon resonance band, and therefore the optical properties of the studied systems. It has been proven that the synthesized silver nanoparticles do not require additional stabilization. Agglomeration processes occur only with a significant increase in concentration and heating time.