Synthesis of h- and α -MoO3 by refluxing and calcination combination: Phase and morphology transformation, photocatalysis, and photosensitization
Hexagonal molybdenum oxide (h-MoO 3 ) nano- and microrods were successfully synthesized by refluxing of (NH 4 ) 6 Mo 7 O 24 ·4H 2 O solutions with the pH 1 at 90°C for 1, 3, 5, and 7 h and were further transformed into orthorhombic molybdenum oxide (α-MoO 3 ) microplates by calcination at 450°C for...
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| Main Authors: | , , |
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| Format: | Journal |
| Published: |
2018
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| Online Access: | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84883179373&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/47652 |
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| Institution: | Chiang Mai University |
| Summary: | Hexagonal molybdenum oxide (h-MoO 3 ) nano- and microrods were successfully synthesized by refluxing of (NH 4 ) 6 Mo 7 O 24 ·4H 2 O solutions with the pH 1 at 90°C for 1, 3, 5, and 7 h and were further transformed into orthorhombic molybdenum oxide (α-MoO 3 ) microplates by calcination at 450°C for 6 h. These selected products were used to determine the degradation of methylene blue dye under 35 W xenon lamp for 0-180 min, due to the photocatalysis and photosensitization processes. In this research, catalytic activity of the metastable h-MoO 3 has higher efficiency than that of the thermodynamically stable α-MoO 3 . Their phase and morphology transformation was also explained according to the experimental results. © 2013 Pannipa Wongkrua et al. |
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