Journal
CRYSTAL GROWTH & DESIGN
Volume 10, Issue 12, Pages 5254-5261Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cg101105t
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Titanium dioxide (TiO2) has been widely used as an advanced semiconductor and as a white pigment for many years In recent years, TiO2 has gained much more interest for its semiconducting properties for use as photocatalytic and photovoltaic materials Understanding the fundamental nucleation and growth mechanisms is crucial to controlling micro structure and properties for these applications Nanosized nude and anatase particles were synthesized from a water-soluble titanium(IV) precursor using a hydrothermal method The impact of various hydrothermal conditions on the formation phase morphology, and grain size of the TiO2 products was investigated using XRD, TEM and FTIR At near neutral pH aggregated rutile rods are formed By increasing the alkalinity of the reaction medium, the anatase phase was favored and, as expected larger particle sizes resulted from longer duration reactions The effects of reaction conditions are discussed with respect to coordination chemistry and coarsening mechanisms
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