David G. Calatayud - Microwave-induced fast crystallization of amorphous hierarchical anatase microspheres.

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  Publication Details (including relevant citation   information):

  Calatayud, David G, Jardiel, Teresa, Peiteado, Marco, Caballero,   Amador C, Fernández-Hevia, Daniel Nanoscale research   letters 2014 9 273-273

  Abstract: The 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.

  Address (URL): http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=4049424&tool=pmcentrez &rendertype=abstract