Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/122032
Título: Scalable Production of Thermochromic Nb-Doped VO<SUB>2</SUB> Nanomaterials Using Continuous Hydrothermal Flow Synthesis
Autores/as: Quesada Cabrera, Raúl 
Powell, Michael J.
Marchand, Peter
Denis, Clément J.
Maggio, Francesco Di
Darr, Jawwad A.
Parkin, Ivan P.
Clasificación UNESCO: 230321-1 Síntesis de nuevos materiales a partir de compuestos organometálicos
331212 Ensayo de materiales
Palabras clave: Continuous hydrothermal synthesis
Energy efficiency
High- Throughput synthesis
Thermochromic doped nanomaterials
Fecha de publicación: 2016
Publicación seriada: Journal of Nanoscience and Nanotechnology 
Resumen: The synthesis of effective thermochromic Nb-doped VO2 nanoparticles, containing a range of Nb dopant concentrations (1, 5 and 15 at.% Nb), was carried out via continuous hydrothermal flow process under supercritical water regime. The synthesis method employed here is directly scalable for industrial purposes and the materials may be produced at a rate of kg h-1 in our pilot plant. The thermochromic properties of these materials were studied at variable temperature using UV/Vis spectroscopy. The structure, morphology and particle properties were characterised using powder X-ray diffraction, Raman spectroscopy and transmission electron microscopy. The incorporation of Nb dopant into VO2 was studied X-ray photoelectron spectroscopy. The Nb-doped VO2 materials showed a substantial decrease in metal- To-semiconductor transition temperature (ca. 20 °C) and improved optical features (narrow hysteresis loop, 10 °C difference) compared to undoped VO2 nanoparticles synthesised under similar conditions. A reduction in the MST temperature of 3.6°C per at.% Nb incorporated was estimated from these studies.
URI: http://hdl.handle.net/10553/122032
ISSN: 1533-4880
DOI: 10.1166/jnn.2016.12842
Fuente: Journal of Nanoscience and Nanotechnology [ISSN 1533-4880], v. 16(9), p. 10104-10111
Colección:Artículos
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