What is it about?
ZnWO4 nanorod photocatalysts with various aspect ratios were synthesized by a hydrothermal method. The aspect ratio of the ZnWO4 nanorods was governed by the hydrothermal temperature and pH value. ZnWO4 nanorod photocatalysts showed highly efficient photocatalytic activity for the degradation of methylene blue under ultraviolet light irradiation. The photocatalytic activity and the effective separation of photogenerated electron–hole pairs were promoted by the increasing aspect ratio of the ZnWO4 nanorods. The amount of electron donors in the ZnWO4 increased with the aspect ratio of ZnWO4, which was in good agreement with photocurrent results. The enhancement of photocurrent density and photocatalytic activity resulted from the reduction of charge-transfer resistance and capacitive reactance, which were deduced by the high aspect ratio of ZnWO4 nanorods.
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Why is it important?
Work concerning the aspect ratio of the ZnWO4 has not been reported. Therefore, there is a need to investigate the influence of the ZnWO4 nanorod aspect ratio on the photocatalytic activity.
Perspectives
In this work, the influence of aspect ratio of ZnWO4 nanorods on the photocatalytic decomposition of methylene blue has been studied. The influence of the aspect ratio of ZnWO4 nanorods was demonstrated by comparing the electrochemical behavior of each shape with photocatalytic activity in the oxidation of methylene blue.
Dr Di Li
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This page is a summary of: Influence of ZnWO4 nanorod aspect ratio on the photocatalytic activity, CrystEngComm, January 2011, Royal Society of Chemistry,
DOI: 10.1039/c1ce05256j.
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