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Vol. 34 No. 12 (2022): Vol 34 Issue 12, 2022

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Structural and Optical Properties of Ni-Cu Doped TiO2 Synthesized by Sol-Gel Method

https://doi.org/10.14233/ajchem.2022.23920
R. Anisha
Department of Chemistry & Research Centre, Nesamony Memorial Christian College (Affiliated to Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli), Marthadam-629165, India
E.K. Kirupa Vasam
Department of Chemistry & Research Centre, Nesamony Memorial Christian College (Affiliated to Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli), Marthadam-629165, India

Corresponding Author(s) : R. Anisha

anisharusselraj@gmail.com

Asian Journal of Chemistry, Vol. 34 No. 12 (2022): Vol 34 Issue 12, 2022

Abstract

Ni-Cu doped TiO2 nanoparticles as photocatalyst were synthesized by simple sol-gel method. The effect of Ni and Cu doping on TiO2 and their structural and optical properties were analyzed by XRD, FT-IR, SEM-EDS, TEM and UV-DRS techniques. The XRD patterns of calcined nanoparticles showed a monophasic anatase structure with average diameter around 8 nm, which is in close agreement with the TEM results. The surface morphology of the prepared Ni-Cu doped TiO2 nanoparticles were also analyzed by SEM-EDS technique. From UV-DRS analysis, the band-gap energy value of Ni-Cu doped TiO2 nanoparticles was found to be 2.72 eV. The photocatalytic effect of Ni-Cu doped TiO2 nanoparticles as photocatalyst was studied under visible light irradiation through the degradation of Congo red azo dye. The photocatalytic results revealed that Ni-Cu doped TiO2 showed 99.6% degradation efficiency towards Congo red dye, whereas TOC analysis showed a complete mineralization of Congo red dye with minimum degradated byproducts. These results clearly elucidated that the synthesized photocatalyst is practically effective and is recovered easily, thus minimizing the operating costs. Due to the stability of Ni-Cu doped TiO2 nanoparticles, the prepared photocatalyst exhibit high degrading efficiency even after recycled several times.

Keywords

Doped TiO2 Doped TiO2 Photocatalyst Photocatalyst Sol-gel Sol-gel Congo red Congo red Visible light Visible light Photocatalytic degradation Photocatalytic degradation
Anisha, R., & Kirupa Vasam, E. (2022). Structural and Optical Properties of Ni-Cu Doped TiO2 Synthesized by Sol-Gel Method. Asian Journal of Chemistry, 34(12), 3145–3150. https://doi.org/10.14233/ajchem.2022.23920
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