Title :
Dielectric constant controlled solvothermal synthesis of a TiO2 photocatalyst with tunable crystallinity: A strategy for solvent selection
Author :
Wu, Jian J. ; Lü, Xu J. ; Lu, X.J. ; Huang, Fu Q.
Author_Institution :
CAS Key Lab. of Mater. for Energy Conversion, Chinese Acad. of Sci. (SICCAS), Shanghai, China
Abstract :
Phase-pure anatase TiO2 nanocrystals with a tunable crystallinity have been prepared by a one-step solvothermal method in the absence of any templates or additives. 2-Propanol, which has the lowest dielectric constant of those studied, favors the crystallization of TiO2 nanocrystals with the best crystallinity, and highest photocatalytic efficiency. The effect of the dielectric constant on the processes of nucleation and crystal growth is discussed in detail. The photocatalytic activity of the as-prepared samples has also been investigated with respect to crystallinity.
Keywords :
catalysts; crystal growth from solution; nucleation; permittivity; titanium compounds; 2-Propanol; TiO2; crystal growth; dielectric constant; nucleation; photocatalyst; solvent selection; solvothermal synthesis; tunable crystallinity; Capacitive sensors; Crystallization; Dielectric constant; Ethanol; Lattices; Methanol; Morphology; Nanocrystals; Solvents; Temperature control;
Conference_Titel :
Nanoelectronics Conference (INEC), 2010 3rd International
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-3543-2
Electronic_ISBN :
978-1-4244-3544-9
DOI :
10.1109/INEC.2010.5424889
