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This work is licensed under a Creative Commons Attribution 4.0 International License.
Synthesis and Characterization of Pure and Nitrogen Doped Titanium Oxide Nanocrystallites for Visible Light Photocatalytic Applications
Corresponding Author(s) : S. Stella Mary
Asian Journal of Chemistry,
Vol. 33 No. 4 (2021): Vol 33 Issue 4
Abstract
The pure and nitrogen doped titanium oxide (TiO2) nanocrystallites were synthesized using sol-gel technique. The synthesized nanoparticles were characterized to examine the microstructural, optical and photocatalytic properties. The XRD studies of pure and doped TiO2 showed the formation of polycrystalline tetragonal structure with anatase phase. The crystallite sizes were calculated and found to be 17 and 15 nm for the pure and N-doped TiO2, respectively. FTIR studies indicated that the N-doped TiO2 bands are stronger compared with pure TiO2, indicating the more hydroxyl groups. FESEM studies showed the uniform formation of TiO2 nanocrystallites and spherical in shape with agglomeration. The photoluminescence spectra of the samples show emission peaks, indicating the band to band shift having the energy gap of 2.9 eV. The photocatalytic performance of the nanocatalyst was studied using methylene blue dye under visible light irradiation for 90 min. The photocatalytic efficiency of 66.9% and 85.8% is obtained for the pure and N-doped TiO2, respectively.
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M. Ge, C. Cao, J. Huang, S. Li, Z. Chen, K.-Q. Zhang, S.S. Al-Deyab and Y. Lai, J. Mater. Chem. A, 4, 6772 (2016); https://doi.org/10.1039/C5TA09323F
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G. Balakrishnan, R. Velavan, K.M. Batoo and E.H. Raslan, Results Phys.,16, 103013 (2020); https://doi.org/10.1016/j.rinp.2020.103013
R. Bashiri, N.M. Mohamed and C.F. Kait, Recent Applications in SolGel Synthesis, In: Advancement of Sol-Gel Prepared TiO2 Photocatalyst, Intech Publishers, (2017).
F. Huang, A. Yan and H. Zhao, Influences of Doping on Photocatalytic Properties of TiO2 Photocatalyst, In: Semiconductor PhotocatalysisMaterials, Mechanisms and Applications, Intech Publishers, Chap. 2, pp 31-80 (2016).
S.D. Delekar, H.M. Yadav, S.N. Achary, S.S. Meena and S.H. Pawar, Appl. Surf. Sci., 263, 536 (2012); https://doi.org/10.1016/j.apsusc.2012.09.102
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X.G. Zhao and L.Q. Huang, Ceramics Int., 43, 3975 (2017); https://doi.org/10.1016/j.ceramint.2016.11.083
G. Balakrishnan, S. Manavalan, R. Venkatesh Babu and J.I. Song, Effect of Substrate Temperature on microstructure and Properties of Nanocrystalline Titania Thin Films Prepared by Pulsed Laser Deposition, Nanosystems: Physics, Chemistry, Mathematics, 7, 621 (2016).
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T. Tachikawa, S. Yamashita and T. Majima, J. Am. Chem. Soc., 133, 7197 (2011); https://doi.org/10.1021/ja201415j
R. Abazari, A.R. Mahjoub and S. Sanati, RSC Adv., 4, 56406 (2014); https://doi.org/10.1039/C4RA10018B
J. Ananpattarachai, P. Kajitvichyanukul and S. Seraphin, J. Hazard.Mater., 168, 253 (2009); https://doi.org/10.1016/j.jhazmat.2009.02.036
W. Zhao, S. Liu, S. Zhang, R. Wang and K. Wang, Catal. Today, 337, 37 (2019); https://doi.org/10.1016/j.cattod.2019.04.024
T. Suwannaruang, N. Chanlek, K. Kamonsuangkasem, P. Kidkhunthod, P. Chirawatkul, C. Saiyasombat and K. Wantala, Mater. Res. Bull., 105, 265 (2018); https://doi.org/10.1016/j.materresbull.2018.05.010
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S.M. Reda, M.A. Khairy and M.A. Mousa, Arab. J. Chem., 13, 86 (2020); https://doi.org/10.1016/j.arabjc.2017.02.002
K. Sathiyan, R. Bar-Ziv, O. Mendelson and T. Zidki, Mater. Res. Bull., 126, 110842 (2020); https://doi.org/10.1016/j.materresbull.2020.110842
A. Sanchez-Martinez, O. Ceballos-Sanchez, C. Koop-Santa and R. Edgar, Ceram. Int., 44, 5273 (2017); https://doi.org/10.1016/j.ceramint.2017.12.140
D. Rajamanickam and M. Shanthi, Spectrochim. Acta A Mol. Biomol. Spectrosc., 128, 100 (2014); https://doi.org/10.1016/j.saa.2014.02.126
L. Zhao, Y. Xie, Q. Lin, R. Zheng and Y. Diao, Funct. Mater. Lett., 12, 1950045 (2019); https://doi.org/10.1142/S1793604719500450
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