Electrospun Pd-doped ZnO nanofibers for enhanced photocatalytic degradation of methylene blue
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Pure and Pd-doped ZnO nanofibers were synthesized via an electrospinning technique, in which polyvinylpyrrolidone was used as the fiber template, zinc acetate/palladium chloride as the precursors, and a mixture of ethanol/acid acetate/water at ratio of 8:5:2 (v/v/v) as the co-solvent. The electrospun fibers were calcined at 600 °C in air for 2 h and characterized by various methods. The photocatalytic activity of the pure and Pd-doped ZnO nanofibers was studied through the photodegradation of methylene blue. Comparing to the pure ZnO nanofibers, the Pd-doped catalysts showed a much enhanced photodegradation efficiency. The possible mechanism was also discussed.
KeywordsNanofibers Electrospinning Photocatalysis ZnO
This work was supported by National Basic Research Program of China (973 Program: 2011CB302101, 2011CB302105). We would like thank Dr. J. Y. Zhang for the help of XRD characterization and X. Z. Xu for the help of TEM characterization. Z. T. Han is grateful to the Chinese Scholar Council for grant.
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