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Citation: HOU Lin-Rui, YUAN Chang-Zhou, PENG Yang. Synthesis and Photocatalytic Property of Bi₃₈ZnO₅₈ Photocatalyst[J]. Chinese Journal of Applied Chemistry, ;2007, 24(2): 206-209. shu

Synthesis and Photocatalytic Property of Bi₃₈ZnO₅₈ Photocatalyst

1.
Institute of Applied Chemistry, Xinjiang University, Urumqi 830046

Received Date: 26 March 2006
Available Online: 28 June 2006

Bi₃₈ZnO₅₈,a photocatalyst responsive to the sunlight,was successfully synthesized by means of solid state reaction method at 700℃,and Bi(NO₃)₃·5H₂O and ZnCl₂ were used as the reactants.The cubic crystal structure of the photocatalyst was determined by means of XRD.SEM and TEM indicated that Bi₃₈ZnO₅₈ were spherical particles with good dispersity and the average diameter was ca.100 nm.The photo-absorption property and band gap of the photoeatalyst were determined by UV-Vis diffuse reflectance spectrum, from which it could be seen that the band energy of the photocatalyst was ca.2.13 eV,and that Bi₃₈ZnO₅₈ possessed much strong photo-absorption property both in the ultraviolet and visible light regions.The edge position of the VB of the photocatalyst was calculated roughly as ca.2.6 eV,which demonstrated that the photocatalyst had a much strong oxidative activity.The photocatalytie activity of Bi₃₈ZnO₅₈ was tested on 12 mg/L methylene blue solution under sunlight illumination.The test results showed that methylene blue was nearly completely degraded after 4 h,which confirmed the high photocatalytic activity of the photocatalyst. Moreover,the crystal structure of Bi₃₈ZnO₅₈ was still the same and its photocatalytic efficiency of Bi₃₈ZnO₅₈ was still above 98% even after being reused for five times.
- Bi₃₈ZnO₅₈,
- photocatalysis,
- methylene blue
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沈阳化工大学材料科学与工程学院沈阳 110142

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Synthesis and Photocatalytic Property of Bi₃₈ZnO₅₈ Photocatalyst