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Enhanced Oxidation Stability of VO2 by Coating SiO2 Layer for Smart Window Applications

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SiO2–coated W–VO2(M) nanoparticles were synthesized by a precipitation method and then modified with tetraethylorthosilicate as a precursor using the Stöber process, to enhance oxidation stability. W–VO2(M) nanoparticles were uniformly coated with a SiO2 layer approximately 25 nm in thickness. Based on XRD and DSC characterization, the crystal structure and phase transition temperature of SiO2–coated W–VO2(M) are almost the same as before SiO2 coating. Upon exposure to 80% water vapor pressure at 80 °C, the coated nanoparticles maintain their structure, phase transition temperature, and morphology for a longtime compared to uncoated W–VO2(M) particles, and show improved oxidation stability.


Document Type: Short Communication

Publication date: June 1, 2016

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  • Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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