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Evaluation of performance characteristics of nano TiO 2 and TiO 2 -ZnO composite for DSSC applications and electrochemical determination of potassium ferrocyanide using cyclic voltammetry
Abstract Nanoparticles of TiO 2 and TiO 2 -ZnO composite (2:1 molar ratio) were synthesized utilizing the sol-gel and solution combustion approaches, respectively. Scanning electron microscopic, energy dispersive x-ray, x-ray diffraction, UV-visible spectroscopy, and Brunauer–Emmett–Teller analysis...
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Published in: | Materials research express 2021-12, Vol.8 (12), p.125004 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Abstract
Nanoparticles of TiO
2
and TiO
2
-ZnO composite (2:1 molar ratio) were synthesized utilizing the sol-gel and solution combustion approaches, respectively. Scanning electron microscopic, energy dispersive x-ray, x-ray diffraction, UV-visible spectroscopy, and Brunauer–Emmett–Teller analysis were employed to characterize the synthesized nanoporous TiO
2
and the composite of TiO
2
-ZnO nanoparticles. Fabrication of dye-sensitized solar cells (DSSCs) was carried out by incorporating the synthesized nanoporous materials coating on the photoanodes using the doctor blade technique. Nano TiO
2
and the composite of TiO
2
-ZnO were also analyzed using cyclic voltammetry test, and their performance was compared for the electrochemical detection of potassium ferrocyanide. The composite of TiO
2
-ZnO exhibited better electrocatalytic activity in comparison with the pure TiO
2
nanoparticles. The fabricated DSSCs by employing nano TiO
2
particles and TiO
2
-ZnO composite as the semiconductor photoanode materials were compared for photovoltaic performance. The DSSC fabricated with TiO
2
nanoparticles exhibited better photovoltaic performance with an efficiency of 2.22% and a current density of 4.152 mA cm
−2
than that fabricated with TiO
2
-ZnO composite with an efficiency of 0.0022% and a short circuit current density of 0.014 mA cm
−2
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ISSN: | 2053-1591 2053-1591 |
DOI: | 10.1088/2053-1591/ac3e27 |