Journal
MATERIALS LETTERS
Volume 186, Issue -, Pages 119-122Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2016.09.106
Keywords
Microstructure; Chemical synthesis; Functional
Funding
- National Natural Science Foundation of China [11332013]
- Chongqing Research Program of Basic Research and Frontier Technology [cstc2016jcyjA0006]
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In this work, hierarchical WO3 center dot H2O porous microspheres and conventional smooth WO3 center dot H2O microspheres were successfully fabricated via a simple hydrothermal process. The products were characterized by X-ray diffraction and scanning electron microscope. Meanwhile, the possible evolution processes of the two products were discussed based on time-dependent experiments. Remarkably, hierarchical porous spherical architectures which possess abundant micro reaction rooms, exhibited improved gas-sensing performance compared to smooth sphere-like structures. It is believed that this unique nanostructure has great potential to enhance the gas-sensing properties of tungsten oxides and other semiconductor materials.
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