Synthesis and Properties of Visible-light Photocatalytic Bi2WO6 via Microemulsion- assisted Hydrothermal Method

doi:10.3724/SP.J.1077.2012.11658

Abstract

Abstract: The novel Bi₂WO₆ and Fe³⁺/Bi₂WO₆ photocatalysts were fabricated separately via a reverse microemulsion method. The effect factors including synthesis temperature, pH value, molar ratio of water to surfactant (ω) and Fe³⁺doping on the structure, morphologies and photocatalysis performance of photocatalysts were studied in detail. These results show that Bi₂WO₆ possesses a high degree of crystallinity of nano-spherical structure with the size of 15–25 nm. The photodegradation rate of methylene blue (MB) is 93.8% as the Bi₂WO₆ photocatalyst was synthesized at 150℃. The results reveal that the photodegradation rate of MB reaches 97.8% as ω is 27. It’s found that the photodegradation rate of MB for 1.03% Fe-doped Bi₂WO₆ sample has increased to 90.2%, which is two times higher than that of pure Bi₂WO₆.

Key words: Bi₂WO₆, microemulsion, Fe-doped, photocatalysis

CLC Number:

TQ135

LAI Shu-Ting, ZHANG Peng, ZHOU Wu-Yi, XIE Zhen-Hua, YANG Zhuo-Hong. Synthesis and Properties of Visible-light Photocatalytic Bi₂WO₆ via Microemulsion- assisted Hydrothermal Method[J]. Journal of Inorganic Materials, 2012, 27(9): 945-950.

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Synthesis and Properties of Visible-light Photocatalytic Bi₂WO₆ via Microemulsion- assisted Hydrothermal Method

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