Solvothermal synthesis of a highly branched Ta-doped TiO2.

Autor:	Arab, Shermin, Dongsheng Li, Kinsinger, Nichola, Zaera, Francisco, Kisailus, David
Předmět:	TANTALUM TITANIUM dioxide SCANNING electron microscopy ELECTRON microscopy ALKOXIDES
Zdroj:	Journal of Materials Research; 10/28/2011, Vol. 26 Issue 20, p2653-2659, 7p
Abstrakt:	We present a low-temperature, hydrothermal synthesis method for Ta-doped TiO2. Here, alkoxide-based precursors are mixed at low temperatures to suppress differential hydrolysis and phase separation. This method ensures homogeneous, molecular mixing of the Ta dopant with the native oxide up to a concentration of ∼ 2.5 at.%. X-ray diffraction and energy dispersive spectrometer analyses confirm a uniformly doped rutile TiO2. Scanning electron microscopy and transmission electron microscopy analyses reveal a highly branched structure. Optoelectronic properties of these structures were investigated using ultraviolet-visible spectroscopy and low-temperature photoluminescence. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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