TY - JOUR
T1 - Characterization of NaTaO3 synthesized by ultrasonic method
AU - Vázquez-Cuchillo, O.
AU - Manzo-Robledo, A.
AU - Zanella, R.
AU - Elizondo-Villareal, N.
AU - Cruz-López, A.
PY - 2013/1
Y1 - 2013/1
N2 - NaTaO3 perovskite-like materials were synthesized using sodium acetate and tantalum ethoxide as precursors in an ultrasonic bath at room temperature. The pristine sample was thermally treated at 600 °C and characterized using XRD, N2 physisorption, DRS, SEM and TEM techniques. The structural characterization by X-ray powder diffraction revealed that the crystallization of the NaTaO3 phase prepared at 600 °C showed agglomerates sizes in the micrometric scale, as confirmed by scanning electron microscopy (SEM). On the other hand, well-defined NaTaO3 particles in the nanometric scale were determined using TEM. It was found that, for the treated sample, the band gap and BET area was 3.8 eV and 9.5 m 2 g-1, respectively. The annealed perovskite, deposited onto ITO glass, presented an important variation in the open circuit potential transient during UV light irradiation in neutral solution, compared with its counterpart prepared by solid-state method. These intrinsic properties, given by the preparation route, might be appropriate for increase its photocatalytic activity.
AB - NaTaO3 perovskite-like materials were synthesized using sodium acetate and tantalum ethoxide as precursors in an ultrasonic bath at room temperature. The pristine sample was thermally treated at 600 °C and characterized using XRD, N2 physisorption, DRS, SEM and TEM techniques. The structural characterization by X-ray powder diffraction revealed that the crystallization of the NaTaO3 phase prepared at 600 °C showed agglomerates sizes in the micrometric scale, as confirmed by scanning electron microscopy (SEM). On the other hand, well-defined NaTaO3 particles in the nanometric scale were determined using TEM. It was found that, for the treated sample, the band gap and BET area was 3.8 eV and 9.5 m 2 g-1, respectively. The annealed perovskite, deposited onto ITO glass, presented an important variation in the open circuit potential transient during UV light irradiation in neutral solution, compared with its counterpart prepared by solid-state method. These intrinsic properties, given by the preparation route, might be appropriate for increase its photocatalytic activity.
KW - Open circuit
KW - Perovskite-type compounds
KW - Semiconductors
KW - Ultrasonic method
UR - http://www.scopus.com/inward/record.url?scp=84867742848&partnerID=8YFLogxK
U2 - 10.1016/j.ultsonch.2012.08.004
DO - 10.1016/j.ultsonch.2012.08.004
M3 - Artículo
C2 - 22981167
SN - 1350-4177
VL - 20
SP - 498
EP - 501
JO - Ultrasonics Sonochemistry
JF - Ultrasonics Sonochemistry
IS - 1
ER -