Tailored TiO2-SrTiO3 Heterostructure Nanotube Arrays for Improved Photoelectrochemical Performance

submitted by: pkamat
TiO2 nanotube arrays formed on Ti substrate by electrochemical anodization have been converted into TiO2-SrTiO3 heterostructures by controlled substitution of Sr under hydrothermal conditions. The growth of SrTiO3 crystallites on the nanotube array electrode was probed by electron microscopy and X-ray diffraction. As the degree of Sr substitution increases with the duration of hydrothermal treatment, an increase in the size of SrTiO3 crystallites was observed. Consequently, with increasing...
Authors: Jun Zhang, Jin ho Bang, Cencun Tang, Prashant v. Kamat