Tuning Anatase-Rutile Phase Transition Temperature: TiO2SiO2 Nanoparticles Applied in Dye-Sensitized Solar Cells
Joint Authors
José Leite Santos, Marcos
Cardoso, Billy N.
Kohlrausch, Emerson C.
Laranjo, Marina T.
Benvenutti, Edilson V.
Balzaretti, Naira M.
Arenas, Leliz T.
Costa, Tania M. H.
Source
International Journal of Photoenergy
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-03-13
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
TiO2/SiO2 nanoparticles with 3, 5, and 10 molar percent of silica, were synthesized by hydrothermal method and characterized by SEM, TEM, N2 adsorption-desorption isotherms, X-ray diffraction, and Raman and UV-Vis spectroscopy.
While pristine TiO2 thermally treated at 500°C presents a surface area of 36 m2 g-1 (±10 m2 g-1), TiO2/SiO2 containing 3, 5, and 10 molar percent of silica present surface areas of 93, 124, and 150 m2 g-1 (±10 m2 g-1), respectively.
SiO2 is found to form very small amorphous domains well dispersed in the TiO2 matrix.
X-ray diffraction and Raman spectroscopy data show that anatase-to-rutile phase transition temperature is delayed by the presence of SiO2, enabling single-anatase phase photoanodes for DSSCs.
According to the I×V measurements, photoanodes with 3% of SiO2 result in improved efficiency, which is mainly related to increased surface area and dye loading.
In addition, the results suggest a gain in photocurrent related to the passivation of defects by SiO2.
American Psychological Association (APA)
Cardoso, Billy N.& Kohlrausch, Emerson C.& Laranjo, Marina T.& Benvenutti, Edilson V.& Balzaretti, Naira M.& Arenas, Leliz T.…[et al.]. 2019. Tuning Anatase-Rutile Phase Transition Temperature: TiO2SiO2 Nanoparticles Applied in Dye-Sensitized Solar Cells. International Journal of Photoenergy،Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1167336
Modern Language Association (MLA)
Cardoso, Billy N.…[et al.]. Tuning Anatase-Rutile Phase Transition Temperature: TiO2SiO2 Nanoparticles Applied in Dye-Sensitized Solar Cells. International Journal of Photoenergy No. 2019 (2019), pp.1-9.
https://search.emarefa.net/detail/BIM-1167336
American Medical Association (AMA)
Cardoso, Billy N.& Kohlrausch, Emerson C.& Laranjo, Marina T.& Benvenutti, Edilson V.& Balzaretti, Naira M.& Arenas, Leliz T.…[et al.]. Tuning Anatase-Rutile Phase Transition Temperature: TiO2SiO2 Nanoparticles Applied in Dye-Sensitized Solar Cells. International Journal of Photoenergy. 2019. Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1167336
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1167336