Synthesis of a tailored SrTiO sub(3)-TiO sub(2) microspherical photocatalyst and its photogenerated charge properties

• Published in: RSC advances Vol. 4; no. 7; pp. 3226 - 3232
• Main Authors: Zhang, Yu, Lin, Shen, Zhang, Wei, Ge, Hao, Li, Gen, Qi, Fu-Yuan, Song, Xi-Ming
• Format: Journal Article
• Language: English
• Published: 01.12.2013
• Subjects: Charge
• ISSN: 2046-2069
• DOI: 10.1039/c3ra46101g

A series of SrTiO sub(3)-TiO sub(2) microspheres with different porosities were prepared by a facile hydrothermal reaction method in the presence of Sr(OH) sub(2) and titanium glycolate. The photogenerated charge separation and surface trapping process was studied by surface photovoltage (SPV) spectra and corresponding phase spectra. Compared with one-dimension nanowires, the SrTiO sub(3)-TiO sub(2) microspheres show structural advantage in photocatalytic degradation under visible-light. The enhanced photocurrent of Rhodamine B (RhB) sensitized SrTiO sub(3)-TiO sub(2) porous microspheres reveals that a photosensitization effect leads to the photodegradation process. According to the experimental results, these SrTiO sub(3)-TiO sub(2) porous microspheres have great potential applications in photocatalytic decomposition or optoelectronic devices.