Open AccessSynthesis of the S/AgBr nano/micropowder in DMSO-water system
Author(s) -
Natalya Khan
Publication year - 2022
Publication title -
habaršy - a̋l-farabi atyndag̣y k̦azak̦ memlekettik ụlttyk̦ universiteti. himiâ seriâsy/chemical bulletin of kazakh national university
Language(s) - English
Resource type - Journals
eISSN - 2312-7554
pISSN - 1563-0331
DOI - 10.15328/cb1254
Subject(s) - scanning electron microscope , raman spectroscopy , sulfur , halide , particle size , analytical chemistry (journal) , distilled water , drop (telecommunication) , phase (matter) , nano , chemistry , materials science , mineralogy , inorganic chemistry , chromatography , optics , organic chemistry , telecommunications , physics , computer science , composite material
A new synthesis method of S/AgBr nano/micropowder based on sulfur and silver halide was developed. The nano/micropowder was obtained in the DMSO-water system, in two stages. Initially, sulfur was dissolved in DMSO at 120°C. The resulting solution was cooled to room temperature and separated from sulfur by filtration. Then, pre-prepared water solutions of AgNO3 and NaBr were introduced drop by drop into a sulfur solution in DMSO, at room temperature. The phase composition and structure of the precipitated powdery sediment were studied by X-ray diffraction analysis (XRD) and Raman spectroscopy. Scanning electron microscopy (SEM) was used to study the morphology and particle size. XRD showed the presence of the crystalline phase of AgBr, while the Raman spectra were characterized by the presence of sulfur and AgBr peaks. The SEM results showed that the S/AgBr is represented by oval, spherical and triangular particles of a homogeneous structure; the particle size was in the range from 300 to 800 nm.