Journal
NANOMATERIALS
Volume 5, Issue 3, Pages 1250-1255Publisher
MDPI
DOI: 10.3390/nano5031250
Keywords
WO3; crystal growth; functional; CO; sensors
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Funding
- high school in Chongqing
- Natural Science Foundation of Chongqing [cstc2013jcyjA30019]
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Recently hierarchical architectures, consisting of two-dimensional (2D) nanostructures, are of great interest for potential applications in energy and environmental. Here, novel rose-like WO3 hierarchical architectures were successfully synthesized via a facile hydrothermal method. The as-prepared WO3 hierarchical architectures were in fact assembled by numerous nanosheets with an average thickness of similar to 30 nm. We found that the oxalic acid played a significant role in governing morphologies of WO3 during hydrothermal process. Based on comparative studies, a possible formation mechanism was also proposed in detail. Furthermore, gas-sensing measurement showed that the well-defined 3D WO3 hierarchical architectures exhibited the excellent gas sensing properties towards CO.
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