Abstract
Mesoporous Titanium dioxide (TiO2) sphere, nanosheet and nanoparticle were synthesized by a simple wet chemical method using Trichloroaniline (TCA) as a capping agent. The presence of a lone pair of electrons in the TCA is used to modify the TiO2 structure when it is added with different amounts of ratios. The as-synthesized TiO2 nanostructures were characterized by powder X-ray diffraction, Raman spectroscopy (FT-Raman), ultraviolet–visible spectroscopy, Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy and transmission electron microscopy. The anatase phase of TiO2 was confirmed by Powder X-ray diffraction and Raman spectroscopy. The particle size of TCA-capped TiO2 was reduced when compared with the sample without TCA capping. FTIR results demonstrated the TiO2 nanoparticles were capped by the TCA molecule. The impact of different TiO2 nanostructure morphology for DSSCs was investigated. The photoanode cells were fabricated with mesoporous spheres and mixed morphology of TiO2 nanoparticle and nanosheet. Their optimal efficiencies were found to be 5.537 and 1.539%, respectively. Mesoporous spheres coated photoanode cells reached the maximum efficiency when compared to that of the mixed morphology of nanosheet with nanoparticle-coated photoanode. The enhanced performance of mesoporous spheres coated photoanode cells is due to the anatase phase of TiO2 with high crystallinity and interconnected mesoporous network.
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Prakash, T., Navaneethan, M., Archana, J. et al. Preparation and characterization of TiO2 nanostructures by changing the parameters of trichloroaniline concentration, pH and annealing for dye-sensitized solar cell application. Indian J Phys (2024). https://doi.org/10.1007/s12648-024-03231-2
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DOI: https://doi.org/10.1007/s12648-024-03231-2