Phase Transformations and Photocatalytic Activity of TiO2 Powders Preparation via Microwave-Assisted Sol-Gel Method

Weerachai Sangchay; Pichet Chantawee; Weerachai Madtharak

doi:10.4028/www.scientific.net/AMR.717.79

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 717Phase Transformations and Photocatalytic Activity...

Phase Transformations and Photocatalytic Activity of TiO₂ Powders Preparation via Microwave-Assisted Sol-Gel Method

Abstract:

The purpose of this research was to study phase transformation and photocatalytic properties of TiO₂ powders. TiO₂ powders were prepared by microwave-assisted sol-gel method. The prepared powders were refluxed at 18 W to 450 W for 1 h and dried at 180 W for 1 h by a conventional microwave oven. The phase transformations of powders were characterized by XRD and photocatalytic activities of powders were evaluated by UV-Vis spectrophotometer. The results show all samples reveal that only the anatase phase and has the crystallite size is 13.8, 10.3 and 9.2 nm when the refluxed at 180, 300 and 450 W. It was found that TiO₂ powders refluxed at 450 W were found to give the highest photocatalytic efficiency is about 90.06% under UV irradiation for 6 h.

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Periodical:

Advanced Materials Research (Volume 717)

Pages:

79-83

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.717.79

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Online since:

July 2013

Authors:

Weerachai Sangchay, Pichet Chantawee, Weerachai Madtharak

Keywords:

Microwave-Assisted, Phase Transformation, Photocatalytic Activity, Powder, TiO₂

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