Anatase/Rutile Phase Control of Titanium Oxide Nanoparticles Synthesized from Potassium Titanium Oxalate by Homogeneous Precipitation and Hydrothermal Methods

Abstract:

Preparation conditions of titanium oxide (TiO₂) powders were examined by the hydrolysis of titanium potassium oxalate (K₂TiO(C₂O₄)₂), through the homogeneous precipitation method (80oC for 24 h) and hydrothermal treatment (160 or 170oC for 1 h). According to the Rietveld analysis, almost a single phase of anatase TiO₂ could be obtained by the hydrothermal treatment at 160oC for 1 h, followed by the heating at 900oC for 10 min in air. The molar ratio of anatase to rutile TiO₂ was found to be controlled by optimizing the hydrothermal conditions in the solution and the heating conditions in air for the photocatalytic activity.

• Periodical: Nano Hybrids and Composites (Volume 40)
• Pages: 7-12
• DOI: https://doi.org/10.4028/p-Q5lZkp
• Online since: July 2023
• Authors: Shohei Kajiwara*, Kiyoshi Itatani, Hideki Kuwahara, Taishi Yokoi, Tetsuo Sasaki, Haruhiko Kuroe
• Keywords: Homogeneous Precipitation Method, Hydrothermal Treatment, Photocatalytic Effect, Potassium Titanium Oxalate, Rietveld Analysis, Titania, Titanium Dioxide, Titanium Oxide, X-Ray Diffractometry

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