Microwave-hydrothermal process for the synthesis of rutile

Journal Article · Thu Nov 03 04:00:00 EST 2005 · Materials Research Bulletin

DOI:https://doi.org/10.1016/j.materresbull.2005.05.023· OSTI ID:20888114

Baldassari, Sara ^[1]; Komarneni, Sridhar ^[2]; Mariani, Emilia ^[1]; Villa, Carla ^[1]

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1. Di.Sci.Far., Viale Benedetto XV, 3, University of Genoa, 16132 Genoa (Italy)
2. Materials Research Institute, Pennsylvania State University, University Park, PA 16802 (United States)

The synthesis of pure rutile titanium dioxide is not an easy achievement, as the crystallization process generally leads to mixtures of two or even three phases; moreover the synthetic processes normally used by industry require harsh reaction conditions. We carried out the synthesis of titanium dioxide from an aqueous titanium tetrachloride solution under microwave irradiation in the reaction time range of 5-120 min. We mostly obtained mixtures of rutile and anatase, but obtained single-phase rutile after a 2-h treatment at 160 deg. C; transmission electron micrographs revealed well-dispersed spherical nanoparticles. We also investigated the effects of dilution and addition of a dispersant (polyvinylpyrrolidone) on phase crystallization and particle shape.

• OSTI ID: 20888114
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 11 Vol. 40; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERAMICS
CHEMICAL PREPARATION
CRYSTALLIZATION
IRRADIATION
MICROWAVE RADIATION
NANOSTRUCTURES
PVP
RUTILE
TITANIUM CHLORIDES
TITANIUM OXIDES
X-RAY DIFFRACTION