INOR 539 |
| Titania microspheres and nanoparticles and silica nanospheres were synthesized using an inexpensive ultrasonic generator (household humidifier; ultrasonic spray pyrolysis). Morphology and pore size of titania microspheres were controlled by the silica to Ti(IV) ratio and silica particle size. Fine tuning the precursor ratio affords sub-50 nm titania nanoparticles as well. In terms of silica nanospheres, morphology was controlled by the silica to organic monomer ratio. These nanomaterials are porous or hollow and in certain cases magnetically responsive. They are also rapidly taken up into the cytoplasm of mammalian cells and nearly noncytoxicity. Small molecules like Rhodamine and DHED (dehydroevodiamine HCl; Alzheimer's disease therapeutic) can be delivered along with them. Characterizations were done by SEM, (S)TEM, optical/confocal microscopy, XRD, XPS, EDS, SAED, zeta potential, and BET.
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Nanoscience: Synthesis
9:00 AM-12:00 PM, Tuesday, 12 September 2006 Moscone Center -- Room 309, Oral
Division of Inorganic Chemistry |
