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Title

Microwave-induced fast crystallization of amorphous hierarchical anatase microspheres

AuthorsCalatayud, David G. ; Jardiel, Teresa ; Peiteado, Marco ; Caballero Cuesta, Amador ; Fernández Hevia, D.
KeywordsTiO2 anatase
Microwave heating
Nanoparticles
Hierarchical microspheres
Photocatalysis
Issue Date2014
PublisherSpringer
CitationNanoscale Research Letters 9: 1- 5 (2014)
AbstractThe fabrication of hierarchical anatase microspheres with potential photocatalytic properties eventually comprises a consolidation step in which a high degree of crystalline order is typically achieved through conventional electric heating treatments. This however entails a substantial reduction in the specific surface area and porosity of the powders, with the consequent deterioration in their photocatalytic response. Here, we have tested the employ of microwave heating as an alternative energy-saving sintering method to promote fast crystallization. The results obtained suggest that under the microwave radiation, the TiO2 hierarchical structures can effectively crystallize in a drastically reduced heating time, allowing the specific surface area and the porosity to be kept in the high values required for an improved photocatalytic performance.
Publisher version (URL)http://dx.doi.org/10.1186/1556-276X-9-273
URIhttp://hdl.handle.net/10261/211901
DOI10.1186/1556-276X-9-273
Identifiersdoi: 10.1186/1556-276X-9-273
issn: 1931-7573
e-issn: 1556-276X
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