硫化银
拉曼光谱
单斜晶系
材料科学
硫化物
光谱学
银纳米粒子
拉曼散射
分析化学(期刊)
无机化学
纳米颗粒
结晶学
纳米技术
晶体结构
化学
冶金
有机化学
光学
物理
量子力学
作者
С. И. Садовников,Э. Г. Вовкотруб,А. А. Rempel
标识
DOI:10.1134/s0012501618060027
摘要
Nanostructured silver sulfide powder with an average particle size of about 45 nm, an acanthite α-Ag2S monoclinic structure (space group P21/c), and nonstoichiometric composition Ag1.93S has been synthesized by the chemical deposition method. The silver sulfide nanopowder has been studied by Raman spectroscopy. According to the Raman scattering data, heating the nanopowder with high-power laser radiation in air leads to photoinduced decomposition of the Ag1.93S nanopowder to give silver metal. The Raman spectrum of the silver sulfide nanopowder shows a series of bands in the low-frequency range from 90 to 260 cm–1 associated with vibrations of silver atoms, Ag–S bonds, and symmetric Ag–S–Ag longitudinal modes. Raman spectroscopy confirmed an acanthite monoclinic structure of synthesized silver sulfide nanopowder.
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