학술논문
Nanoplatelet structures of MoO3 for H2 gas sensors
Document Type
Conference
Source
International Conference on Nanoscience, Engineering and Technology (ICONSET 2011) Nanoscience, Engineering and Technology (ICONSET), 2011 International Conference on. :514-517 Nov, 2011
Subject
Language
Abstract
MoO 3 nanostructures were synthesized using optimized sol-gel conditions and thin films were prepared by spin coating onto suitable substrates and tested for hydrogen gas detection. Highly polycrystalline MoO 3 nanostructures with orthorhombic symmetry were obtained from phase determination using grazing incidence x-ray diffraction. Morphology determination using field emission scanning electron microscopy revealed different topography for various processing conditions. Comparison of gas sensing studies revealed that molybdenum oxide thin films with nanoplatelet shaped morphology are capable of detecting hydrogen gas at a large range of concentrations, when operated at 200°C with higher sensitivity than other morphologies.