Abstract
In this work, the bismuth oxide/polyaniline (Bi2O3/PANI) heterojunction as a visible light photocatalyst was successfully prepared via a simple hydrothermal synthesis method. The microstructure and properties of the synthesized photocatalyst were characterized by XRD, SEM, TEM and XPS, respectively. The close bonding between Bi2O3 and PANI facilitated the rapid separation and transfer of photogenerated electrons and holes, and the photocatalytic performance under visible light irradiation was significantly improved. The degradation kinetic reaction rate constant of Bi2O3/PANI was 31.46 times higher than that of Bi2O3, and the degradation rate of methylene blue (MB) was as high as 96.4%, and it can still maintain high photocatalytic activity after the fifth run. Finally, a possible photocatalytic mechanism of Bi2O3/PANI was proposed.
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