Year: 2024
Type: article
Abstract: The purpose of this work is to study the possibility of synthesizing nanocomposites of the Ag-Ni system through the joint chemical reduction of silver and nickel ions in the presence of a stabilizer. Solutions containing certain amounts of silver and nickel ions were prepared from the corresponding nitrates of silver and nickel. A solution of hydrazine hydrate was used as a reducing agent. Gelatin and sodium dodecyl sulfate (DSN) are used to stabilize the particles in the solution. With the combined chemical reduction of silver and nickel ions in the presence of gelatin or sodium dodecyl sulfate, regardless of the composition of the reaction medium, a nanocomposite consisting of nanodispersed silver and nickel particles is formed. The phase composition and dispersion of nanocomposites synthesized in the presence of various stabilizers have been studied by X-ray phase analysis and electron microscopy. The dispersion of nanocomposites depends on the type of stabilizer. The phase composition of the products of joint reduction of silver and nickel is influenced by the nature of the stabilizer. The XRD results of a sample synthesized in the presence of gelatin show that this product consists of three phases: metallic silver, nickel and nickel hydroxide. In the second sample, where the stabilizer is SDS, there are also lines characteristic of metallic silver and nickel, as well as low-intensity lines related to nickel hydroxide. The dispersity of nanocomposites depends on the type of stabilizer. It is established that the most highly dispersed nanocomposites are formed in a gelatin medium.
Authors: Zh.K. Zhasnakunov, Ch.T. Bekturova
Institution: Kyrgyz State National University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W7159784332