Poly(vinylpyrrolidone) stabilized aluminum nanoparticles obtained by the reaction of SiCl4 with LiAlH4

Abstract

Isolation and stabilization of Al nanoparticles has been possible by the room temperature reaction between SiCl₄ and LiAlH₄ in the presence of poly(vinylpyrrolidone) (PVP) under sonication. The present investigation explained that the Al from LiAlH₄ produced Al nanoparticles while SiCl₄ was converted to hydrosilanes. The formation of Al nanoparticles from this reaction was established by thorough characterization using PXRD patterns, ²⁷Al MAS-NMR spectra and HRTEM micrographs. The isolation of Al nanoparticles from this reaction clearly explained the products formed in this reaction.