期刊
RSC ADVANCES
卷 3, 期 43, 页码 20054-20059出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra42874e
关键词
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资金
- National Natural Science Foundation of China [50902054]
- Natural Science Foundation of Hubei Province of China [2012FFB02217]
ZnO nanorods have been successfully prepared at low temperature (60 degrees C) in the presence of ammonia via a simple aqueous solution-based chemical approach. After calcination at 300 degrees C, many unique pitted structures are found on the surface of ZnO nanorods, although the shape and size of ZnO nanorods have almost no changes. Furthermore, the pit-structured ZnO nanorods exhibit higher photocatalytic activity for methylene blue photodegradation with a rate constant (k) of 0.01402 min(-1), which is about 3 times more than that of uncalcined sample. The formation of the pitted structures is presumably attributed to the decomposition of a trace amount of ZnO(NH3)n complex implanted into ZnO crystals. In addition, a photocatalytic mechanism is proposed to explain the enhanced photocatalytic activity of the pit-structured ZnO nanorods.
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