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Disorder modification and photocatalytic activity enhancement of TiO2 nanocrystals through ultrasonic hydroxylation.
- Source :
-
Journal of Alloys & Compounds . May2017, Vol. 703, p96-102. 7p. - Publication Year :
- 2017
-
Abstract
- Disorder modification of TiO 2 nanocrystals (NCs) has been proved to enhance the photocatalytic activity through surface defects and band-gap narrowing. In this contribution, we used a facile way of ultrasonic irradiation to induce the hydroxyls injection into TiO 2 (P25) crystal lattice, which obtained disordered TiO 2 NCs. In order to improve the degree of ultrasonic-induced disorder, extension of ultrasonic time or increasing alkalinity was necessary, which continuously regulated the energy band structure of TiO 2 and could at most improve the solar-driven photocatalytic activity for 2.33 times than original P25 NCs. [ABSTRACT FROM AUTHOR]
- Subjects :
- *NANOCRYSTALS
*PHOTOCATALYSTS
*TITANIUM dioxide
*ULTRASONICS
*HYDROXYLATION
Subjects
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 703
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 121452477
- Full Text :
- https://doi.org/10.1016/j.jallcom.2017.01.197