Abstract
Grazing-incidence X-ray diffraction measurements (GIXRD) were performed on thin films of SnO2 nanoparticles coating on the TiO2-nanotube arrays using a common X-ray diffractometer with focusing light, Shimadzu XRD -7000. By GIXRD analysis, the phase components of the coating on titanium oxide nanotube arrays were disclosed, and a multi-layer structure is established: SnO2 crystal phase, TiO crystal phase and amorphous phase with SnO2 composition, from the top down, respectively. It is shown from the GIXRD results that, there is obvious diffraction peak broadening phenomenon corresponding to the decreasing X-ray incident angles (ω ≥ 2°) due to the crystals on the surface, which is caused by the nonparallel X-rays scattering on the sample’s surface, while for the crystal under the surface, there is no this phenomenon observed, even for crystals much closer to the surface. This provides a method for distinguishing the crystals on the surface or under the surface.
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Acknowledgements
This work is supported by the National Science Foundation under 51571003. The authors wish to thank Prof. Liu Danming and Prof. Shu Qun for their kindness and help in application of X-ray diffraction and scanning electron microscope.
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© 2019 The Minerals, Metals & Materials Society
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Tang, Y., Wang, B., Li, H., He, M. (2019). Measurement of SnO2 Nanoparticles Coating on Titanium Dioxide Nanotube Arrays Using Grazing-Incidence X-Ray Diffraction. In: Li, B., et al. Characterization of Minerals, Metals, and Materials 2019. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05749-7_70
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DOI: https://doi.org/10.1007/978-3-030-05749-7_70
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