title: Facile one-pot fabrication of hollow porous silica nanoparticles.
abstract: A method for the fabrication of hollow silica nanospheres, a facile one-pot hydrothermal route, is described. Heating of an aqueous solution of water glass and D-glucose to 180 °C for 24 h affords-as indicated by transmission electron microscopy-a nanospherical composite consisting of a silica shell sheathing a carbonaceous core. Subsequent removal of the carbonaceous interior through oxidation in air produces hollow silica structures. Variation of the concentration of the two jointly dissolved chemicals enables a variation of the thickness of the silica shell. The hollow silica particles were characterized by means of SEM, TEM, XRD, IR spectroscopy, thermogravimetrical analysis (TGA), and sorption measurements.
authors: Ceramics Department, National Research Centre, P.O. 12622, Dokki, Cairo (Egypt), Fax: (+20) 02-333-70931; Fachbereich Chemie und Wissenschaftliches Zentrum für Materialwissenschaften, Philipps-Universität, 35032 Marburg (Germany). hmaa_77@yahoo.com.
authors: Haitham Mohammad
authors: HM
authors: Abdelaal
authors: Mahmoud Farag
authors: MF
authors: Zawrah
authors: Bernd
authors: B
authors: Harbrecht
keywords: glucose; hydrothermal synthesis; nanoparticles; silica; transmission electron microscopy