Issue 15, 2014

In situ surface hydrogenation synthesis of Ti3+ self-doped TiO2 with enhanced visible light photoactivity

Abstract

A novel one-step, vapor-fed aerosol flame synthetic process (VAFS) has been developed to prepare Ti3+ self-doped titanium dioxide (TiO2). The freshly formed TiO2 was in situ surface hydrogenated during the condensation stage by introducing H2 above the flame, and Ti3+ ions were created near the surface of TiO2. The relative content of Ti3+ ions near the surface of TiO2 is estimated to be 8%. Because of the high absorption of visible light and suppression of charge recombination, the photocurrent density and decomposition of MB under visible light irradiation were remarkably enhanced. This study demonstrates a simple, potential method to produce Ti3+ self-doped TiO2 with effective photoactivity in visible light.

Graphical abstract: In situ surface hydrogenation synthesis of Ti3+ self-doped TiO2 with enhanced visible light photoactivity

Supplementary files

Article information

Article type
Paper
Submitted
21 Feb 2014
Accepted
06 Jun 2014
First published
09 Jun 2014

Nanoscale, 2014,6, 9078-9084

Author version available

In situ surface hydrogenation synthesis of Ti3+ self-doped TiO2 with enhanced visible light photoactivity

J. Huo, Y. Hu, H. Jiang and C. Li, Nanoscale, 2014, 6, 9078 DOI: 10.1039/C4NR00972J

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