Journal
FUNCTIONAL MATERIALS-BOOK
Volume 1461, Issue -, Pages 225-228Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4736892
Keywords
TiO2 nanoparticle; hydrolysis; Peptisation; Hydrothermal; Anatase
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Here we report the synthesis and characterization of a stable suspension of modified titania nanoparticles. Phase-pure TiO2 nanocrystallites with narrow particle-size distributions were selectively prepared by hydrolysis-peptization of modified alkoxide followed by hydrothermal treatment. Autoclaving modified TiO2 in the presence of HNO3 as cooperative catalysts led to the formation of crystalline TiO2 with narrow-sized distribution. Following the hydrothermal treatment at 150 degrees C, X-ray diffraction shows the particles to be exclusively anatase. Synthesized powder is characterized by FT-IR, scanning electron microscopy (FESEM) and transmission electron microscopy (HRTEM). The photocatalytic activity in the degradation of orange-II is quite comparable to good anatase and rutile nanocrystallites.
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