TY - JOUR
T1 - Microwave-induced fast crystallization of amorphous hierarchical anatase microspheres
AU - Calatayud, David G.
AU - Jardiel, Teresa
AU - Peiteado, Marco
AU - Caballero, Amador C.
AU - Fernández-Hevia, Daniel
PY - 2014/5/29
Y1 - 2014/5/29
N2 - 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.
AB - 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.
KW - Hierarchical microspheres
KW - Microwave heating
KW - Nanoparticles
KW - Photocatalysis
KW - TiO2 anatase
UR - http://www.scopus.com/inward/record.url?scp=84904010363&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1186/1556-276X-9-273
U2 - 10.1186/1556-276X-9-273
DO - 10.1186/1556-276X-9-273
M3 - Article
AN - SCOPUS:84904010363
SN - 1931-7573
VL - 9
SP - 1
EP - 5
JO - Nanoscale Research Letters
JF - Nanoscale Research Letters
IS - 1
ER -