Nanoengineering of iron oxide and iron oxide/silica hollow spheres by sequential layering combined with a sol-gel process.
Fe2O3 and Fe2O3/SiO2 hollow spheres with tailored dimensions and compositions were created by consecutively coating polystyrene (PS) latices either with Fe3+ alternately adsorbed with Nafion or combining a sol-gel process based on the hydrolysis of tetraethoxysilane (TEOS), and subsequently removing the cores upon pyrolysis.
Dai
Zhifei
Z
Department of Life Science Engineering, Harbin Institute of Technology, Harbin 150001, China. zhifeidai@yahoo.com
Meiser
Felix
F
Möhwald
Helmuth
H
D001672:Biocompatible Materials / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry*; D005465:Fluorocarbon Polymers / Q000737:chemistry; D005782:Gels / Q000737:chemistry; D006868:Hydrolysis; D017745:Incineration; D008855:Microscopy, Electron, Scanning; D008863:Microspheres; D036103:Nanotechnology; D011137:Polystyrenes / Q000737:chemistry; D012821:Silanes / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties
D001672:Biocompatible Materials; D005290:Ferric Compounds; D005465:Fluorocarbon Polymers; D005782:Gels; D011137:Polystyrenes; D012821:Silanes; C000499:ferric oxide; C040402:perfluorosulfonic acid; C040733:tetraethoxysilane; D012822:Silicon Dioxide