Multi-faceted titanium glycolate and titania structures from room-temperature polyol process.
Multi-faceted microstructures of titanium glycolate have been produced by room-temperature polyol process in which titanium alkoxide and polymethylene glycol were mixed rigorously and then the mixture was aged to settle down as white precipitate. Depending on types of titanium alkoxides and polymethylene glycols, stirring time, and composition, a variety of polygonal microrods were generated. Unlike unidentified structures produced from polyol process at elevated temperature, the titanium glycolate products obtained at room temperature revealed well-defined rod-like or plate-like structures with polygonal cross sections. Then, as-prepared titanium glycolate microstructures were transformed into higher refractive index titania of anatase or rutile phase by annealing. The characterization of as-prepared and annealed structures was conducted using scanning and transmission electron microscopes, X-ray diffractomer, and thermal analyzer for thermogravimetry and differential scanning calorimetry.
Yu
Hyung Kyun
HK
National Creative Research Initiative Center for Integrated Optofluidic Systems, Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, South Korea.
Eun
Tai Hee
TH
Yi
Gi-Ra
GR
Yang
Seung-Man
SM
D003460:Crystallization; D006016:Glycolates / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D008958:Models, Molecular; D015394:Molecular Structure; D011108:Polymers / Q000737:chemistry*; D013696:Temperature; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
D006016:Glycolates; D011108:Polymers; C024617:polyol; C031149:glycolic acid; C009495:titanium dioxide; D014025:Titanium