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PVA(Polyvincyl Acohol)-assisted Hydrothermal Preparation of Bi25FeO40 and Its Photocatalytic Activity

Published online by Cambridge University Press:  31 January 2011

Li Jianmin ,
Juyue Song ,
Jianguo Chen ,
Shengwen Yu ,
Dengren Jin  and
Jinrong Cheng
Li Jianmin
Affiliation:
[email protected], ShangHai University, Room 305, Building of Electronic Information Material, ShangHai, 200072, China
Juyue Song
Affiliation:
[email protected], ShangHai University, Electronic Information Material, ShangHai, China
Jianguo Chen
Affiliation:
[email protected], ShangHai University, Electronic Information Material, ShangHai, China
Shengwen Yu
Affiliation:
[email protected], ShangHai University, Electronic Information Material, ShangHai, China
Dengren Jin
Affiliation:
[email protected], ShangHai University, Electronic Information Material, ShangHai, China
Jinrong Cheng
Affiliation:
[email protected], ShangHai University, Electronic Information Material, ShangHai, China
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Abstract

A PVA-assisted hydrothermal synthesis route was utilized to fabricate single-phase Bi25FeO40 crystallites.X-ray diffraction results indicated that sillenite Bi25FeO40 have been synthesized at the temperature of 200 ℃ using the KOH concentration of 7 M. Scanning electron microscopy showed the morphology of the as-prepared products were cubic shape with side length of 26μm. The band gap of Bi25FeO40 was determined to be 1.8 eV (688 nm) by using UV-vis diffuse reflectance spectroscopy. It was found that Bi25FeO40 exhibited a high photocatalytic activity for the degradation of methyl orange under UV-Vis irradiation, being a potential material for photocatalytic decomposition of organic contaminants.

Keywords

hydrothermalmorphologyx-ray diffraction (XRD)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1217: Symposium Y – Catalytic Materials for Energy, Green Processes and Nanotechnology , 2009 , 1217-Y03-22
Copyright
Copyright © Materials Research Society 2010

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