Correlation between multiple growth stages and photocatalysis of SrTiO3 nanocrystals

Zhan, Hongquan and Chen, Zhi-Gang and Zhuang, Jianle and Yang, Xianfeng and Wu, Qili and Jiang, Xiangping and Liang, Chaolun and Wu, Mingmei and Zou, Jin (2015) Correlation between multiple growth stages and photocatalysis of SrTiO3 nanocrystals. The Journal of Physical Chemistry C, 119 (7). pp. 3530-3537. ISSN 1932-7447

Abstract

The relationship between growth kinetic and photocatalysis of SrTiO3 nanoparticles is investigated by close correlation of their growth behaviors under the different stages. The detailed structural characterizations show that SrTiO3 crystal growth does not follow the classic route. A new growth mechanism, including the first formation of SrTiO3 mesoporous sphere followed by the single crystal growth via oriented attachment, size shrinking, and Ostwald ripening, is proposed. The photocatalytic ability of the as-grown SrTiO3 products at different growth stages, checked by the degradation of methyl orange, shows different properties. The results indicate that the size, morphology, and defects of the resultant SrTiO3 products, tailored during the different growth stages, were highly responsible for the photocatalytic activity. Especially, the semicrystalline SrTiO3 mesoporous spheres produced by oriented attachment at the initial stage show the highest photocatalytic ability.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 22 Jun 2017 04:25
Last Modified: 27 Jun 2017 04:17
Uncontrolled Keywords: degradation of methyl oranges; different growth stages; different stages; growth mechanisms; oriented attachment; photocatalytic activities; semicrystallines; structural characterization; mineralogy; alkaline earth metals; chemical reactions; chemical agents and basic industrial chemicals; chemical products generally; solid state physics
Fields of Research : 03 Chemical Sciences > 0303 Macromolecular and Materials Chemistry > 030302 Nanochemistry and Supramolecular Chemistry
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970103 Expanding Knowledge in the Chemical Sciences
Identification Number or DOI: 10.1021/jp512448p
URI: http://eprints.usq.edu.au/id/eprint/31689

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