title: Polyvinylpyrrolidone-assisted ultrasonic synthesis of SnO nanosheets and their use as conformal templates for tin dioxide nanostructures.
abstract: Single crystalline SnO nanosheets with exposed {001} facets have been prepared by an ultrasonic aqueous synthesis in the presence of polyvinylpyrrolidone, which hinders the spontaneous formation of the truncated bipyramidal SnO microcrystals and exfoliate them into layer-by-layer hierarchical structures and further into separate SnO nanosheets. The SnO nanosheets have been used as conformal sacrificial templates converted into polycrystalline SnO(2), as well as layered SnO/SnO(2) nanostructures, by calcination in air. The concept of fabrication of two-dimensional tin oxide nanostructures demonstrated here may be relevant for the crystal design of layered materials, in general.
authors: Department of Physics and Materials Science, City University of Hong Kong, Hong Kong S.A.R.
authors: Hongkang
authors: H
authors: Wang
authors: Yu
authors: Y
authors: Wang
authors: Jun
authors: J
authors: Xu
authors: Haihua
authors: H
authors: Yang
authors: Chun-Sing
authors: CS
authors: Lee
authors: Andrey L
authors: AL
authors: Rogach
mesh_terms: D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D010316:Particle Size; D011205:Povidone / Q000737:chemistry*; D013499:Surface Properties; D017971:Tin Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D014465:Ultrasonics
chemical_list: D017971:Tin Compounds; D011205:Povidone; C045358:stannic oxide