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Hydrothermal synthesis of 3D Ba5Ta4O15 flower-like microsphere photocatalyst with high photocatalytic properties

Published online by Cambridge University Press:  19 August 2016

Dongbo Xu ,
Weidong Shi ,
Chao Xu ,
Songbo Yang ,
Hongye Bai ,
Chengjie Song  and
Biyi Chen
Dongbo Xu
Affiliation:
School of Energy and Power Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China; and School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
Weidong Shi*
Affiliation:
School of Energy and Power Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China; and School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
Chao Xu
Affiliation:
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
Songbo Yang
Affiliation:
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
Hongye Bai
Affiliation:
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
Chengjie Song
Affiliation:
School of Environmental and Safety Engineering, Changzhou University, Changzhou, 213164, People's Republic of China
Biyi Chen
Affiliation:
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

A novel and efficient photocatalyst of three dimensional (3D) Ba5Ta4O15 flower-like microsphere was synthesized via an alkaline etch under hydrothermal condition. The influence of reaction temperature, reaction time, and alkaline concentration on the morphology were investigated for the 3D Ba5Ta4O15 flower-like microsphere photocatalyst. The morphology and structure of the 3D Ba5Ta4O15 were characterized using x-ray diffraction, scanning electron microscope, transmission electron microscope, and high-resolution transmission electron microscopy. The results show that the elegant flower-like structure was composed of Ba5Ta4O15 nanosheets. The 3D Ba5Ta4O15 flower-like microspheres show a higher photocatalytic activity in the degradation of methylene blue under ultraviolet light than the bulk Ba5Ta4O15 microcrystal by the solid-state-reacted synthesized. The UV–vis diffuse reflectance spectra, photoluminescence spectra, volumetric adsorption method, and photocurrent response of the Ba5Ta4O15 photocatalyst were characterized indicated that the higher photocatalytic activity of flower-like Ba5Ta4O15 microspheres was due to the high crystallinity, large surface area and the effective charge separation.

Keywords

hydrothermal synthesisthree dimensionalBa5Ta4O15flower-like microspherephotocatalysis
Type
Articles
Information
Journal of Materials Research , Volume 31 , Issue 17 , 14 September 2016 , pp. 2640 - 2648
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Copyright
Copyright © Materials Research Society 2016 

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