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Facile One‐Pot Fabrication of Hollow Porous Silica Nanoparticles
Author(s) -
Abdelaal Haitham Mohammad,
Zawrah Mahmoud Farag,
Harbrecht Bernd
Publication year - 2014
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201303656
Subject(s) - fabrication , hydrothermal circulation , porosity , chemical engineering , sorption , transmission electron microscopy , aqueous solution , scanning electron microscope , materials science , composite number , nanoparticle , nanotechnology , composite material , chemistry , adsorption , organic chemistry , medicine , alternative medicine , pathology , engineering
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.