期刊
CRYSTAL GROWTH & DESIGN
卷 7, 期 12, 页码 2588-2593出版社
AMER CHEMICAL SOC
DOI: 10.1021/cg070588m
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资金
- National Research Foundation of Korea [과C6A1602, 2006-311-D00568] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
High-density single-crystalline TiO2 nanowires (similar to 50 nm diam) were successfully grown on Ti substrates by chemical vapor deposition at a low temperature of 700 degrees C and within a remarkably short time period of 5 min. They were combined with CdSe nanocrystals (similar to 5 nm diam) to form TiO2/CdSe heterotructured nanowires by overcoating the nanowires with the CdSe-containing solution and subsequent annealing at 600 degrees C. The TiO2/CdSe nanowires showed uniformly distributed CdSe nanocrystals, and high crystallinity of rutile and wurtzite from the TiO2 and the CdSe, respectively. Owing to the heterostructure of the TiO2/CdSe, they demonstrate almost full visible-range light absorption and thus enhanced photocatalytic activity by charge separation via electron and hole transfer between the CdSe and the TiO2.
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