Synthesis Properties and Electron Spin Resonance Properties of Titanic Materials

Journal Article · Sun Apr 19 00:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3137797· OSTI ID:21301121

Cho, Jung Min; Lee, Jun ^[1]; Kim, Tak Hee; Sun, Min Ho; Jang, Young Bae ^[2]; Cho, Sung June ^[1]

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1. Research Institute for Catalysis and Center for Functional Nano Materials and Chonnam National University, Gwangju (Korea, Republic of)
2. Department of Applied Chemical Engineering, Center for Functional Nano Materials and Chonnam National University, Gwangju (Korea, Republic of)

Titanic materials were synthesized by hydrothermal method of TiO{sub 2} anatase in 10M LiOH, 10M NaOH, and 14M KOH at 130 deg. C for 30 hours. Alkaline media were removed from the synthesized products using 0.1N HCl aqueous solution. The as-prepared samples were characterized by scanning electron microscope, transmission electron microscope, X-ray diffraction, Brunauer-Emmett-Teller isotherm, and electron spin resonance. Different shapes of synthesized products were observed through the typical electron microscope and indicated that the formation of the different morphologies depends on the treatment conditions of highly alkaline media. Many micropores were observed in the cubic or octahedral type of TiO{sub 2} samples through the typical electron microscope and Langmuir adsorption-desorption isotherm of liquid nitrogen at 77 deg. K. Electron spin resonance studies have also been carried out to verify the existence of paramagnetic sites such as oxygen vacancies on the titania samples. The effect of alkali metal ions on the morphologies and physicochemical properties of nanoscale titania are discussed.

• OSTI ID: 21301121
• Journal Information: AIP Conference Proceedings, Vol. 1119, Issue 1; Conference: 3. IUPAP international conference on women in physics, Seoul (Korea, Republic of), 8-10 Oct 2008; Other Information: DOI: 10.1063/1.3137797; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ADSORPTION
AQUEOUS SOLUTIONS
DESORPTION
ELECTRON SPIN RESONANCE
HYDROTHERMAL SYNTHESIS
ISOTHERMS
LITHIUM HYDROXIDES
MORPHOLOGY
NANOSTRUCTURES
POTASSIUM HYDROXIDES
SCANNING ELECTRON MICROSCOPY
SODIUM HYDROXIDES
TITANIUM OXIDES
TRANSMISSION ELECTRON MICROSCOPY
VACANCIES
X-RAY DIFFRACTION