Abstract
In this work, Pd cocatalysts were successfully loaded onto the surface of hydrothermally synthesized BiFeO3 (BFO) particles by an impregnation process. It was found that Pd nanoparticles with an average size of ca. 5 nm were well dispersed on the surface of BFO particles, and an Schottky heterostructure at the interface between Pd and BFO was thus constructed. The photocatalytic activities of Pd cocatalyst-loaded BFO photocatalysts were significantly enhanced when compared to pure BFO. The improved photocatalytic activity of BFO particles by loading Pd cocatalyst could mainly be ascribed to the enhanced separation efficiency of photogenerated electron–hole pairs induced by the Schottky heterostructure between Pd and BFO, which was confirmed by photoluminescence emission spectra, photocurrent action spectra and electrochemical impedance spectra.
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Acknowledgments
This work is financially supported by the National Natural Science Foundation of China (No. 51372237, 51572250), Research Project of Public Welfare Quality Testing Industry of China (No. 201510072), Public Welfare Project of Science & Technology Department of Zhejiang Province (No. 2014C31026) and Zhejiang Provincial Higher School Talent Project (No. PD2013183).
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Wang, S., Chen, D., Niu, F. et al. Enhancement in visible light photocatalytic activity of BiFeO3 photocatalysts by Pd cocatalyst. Appl. Phys. A 122, 867 (2016). https://doi.org/10.1007/s00339-016-0402-3
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DOI: https://doi.org/10.1007/s00339-016-0402-3