Synthesis of Nano-Sized SrTiO3 Photocatalyst by Sol-Gel Method

Wei Zhao; Jian Jun Yao; Jing Ya; Lei E; Zhi Feng Liu; He Ping Zhou

doi:10.4028/www.scientific.net/KEM.512-515.1673

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 512-515Synthesis of Nano-Sized SrTiO3 Photocatalyst by...

Synthesis of Nano-Sized SrTiO₃ Photocatalyst by Sol-Gel Method

Abstract:

A sol-gel processing technology was employed to synthesize fine SrTiO₃ powder by using strontium nitrate (Sr(NO₃)₂) , butyl titanate (Ti(OC₄H₉)₄) as precursors, citric acid (C₆H₈O₆) as complexing agent and (ethylene) glycol (C₂H₆O₂) as stabilizer. Prepared the precursors in liquid phase and then calcined the precursors to achieve nano-sized SrTiO₃ powders. The microstructure and composition of the as-synthesized samples were characterized by X-ray diffraction (XRD), Scan Electron Microscopy (SEM), and the photocatalytic activity was studied. The results showed that all the SrTiO₃ particles were identified as perovskite phase. The pH values, the content of the acetic acid, the heat treat temperature play important roles on the synthesis of the SrTiO₃ photocatalyst. When the pH=1, n(Sr(NO₃)₂ ) : n(Ti(OC₄H₉)₄) = 1 : 1, n(Sr(NO₃)₂ ) : n(C₆H₈O₆)=1:1.7, the product has better rate of photodegradation for the Methylene Blue under the ultraviolet condition.

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Periodical:

Key Engineering Materials (Volumes 512-515)

Pages:

1673-1676

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.512-515.1673

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Online since:

June 2012

Authors:

Wei Zhao, Jian Jun Yao, Jing Ya, Lei E, Zhi Feng Liu, He Ping Zhou

Keywords:

Methylene Blue (MB), Photocatalyst, Sol-Gel (SG), SrTiO₃

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