Abstract
In this paper, we present the experimental results of the photocatalytic properties evaluation of the niobium pentoxide \(\text {Nb}_{2}\text {O}_{5}\) semiconductor oxide and its performance in processes photoinduced of Rhodamine B and Atrazine degradation, under visible light irradiation. The sample \(\text {Nb}_{2}\text {O}_{5}\) photocatalysts were synthesized via pechini method. The nanoparticles structure of the samples was studied by X-ray diffraction, Brunauer–Emmett–Teller, Raman spectroscopy, UV–Vis and scanning and transmission electron microscopy. The increase in the calcination temperature during the synthesis resulted in enhanced crystallization, but decreased mesoporosity of the samples.





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Acknowledgments
Authors acknowledge financial support from the agencies Colciencias Colombia and CNPq Brazil and Department of Chemistry UPTC Colombia. Also, we thank professor Paulo De Tarso and Elaine Paris for fruitful discussions and measurements.
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Raba, A.M., Barba-Ortega, J. & Joya, M.R. The effect of the preparation method of Nb2O5 oxide influences the performance of the photocatalytic activity. Appl. Phys. A 119, 923–928 (2015). https://doi.org/10.1007/s00339-015-9041-3
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DOI: https://doi.org/10.1007/s00339-015-9041-3