UV–LED driven photodegradation of organic dye and antibiotic using strontium titanate nanostructures

In the present study, SrTiO 3 (strontium titanate) photocatalyst was prepared through the hydrothermal process for photodegradation of aniline blue (AB) and azithromycin (AZM). The as-synthesized material was characterized with X-ray diffraction test (XRD), transmission electron microscope (TEM), Fo...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2021-08, Vol.32 (16), p.21093-21105
Main Authors: Tenzin, Thinley, Yashas, Shivamurthy Ravindra, Anilkumar, Kotermane Mallikarjunappa, Shivaraju, Harikaranahalli Puttaiah
Format: Article
Language:English
Subjects:
Aniline
Antibiotics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Dyes
Fourier transforms
High performance liquid chromatography
Infrared spectroscopy
Irradiation
Materials Science
Optical and Electronic Materials
Photocatalysis
Photocatalysts
Photodegradation
Reaction kinetics
Spectrum analysis
Strontium
Strontium titanates
Synthesis
Ultraviolet radiation
Water sampling
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Summary:In the present study, SrTiO 3 (strontium titanate) photocatalyst was prepared through the hydrothermal process for photodegradation of aniline blue (AB) and azithromycin (AZM). The as-synthesized material was characterized with X-ray diffraction test (XRD), transmission electron microscope (TEM), Fourier transform infrared spectroscopy (FTIR) and UV–Diffuse reflectance spectroscopy (UV–DRS). The SrTiO 3 was found to be rod shaped with irregular surface possessing compatible bandgap for study under ultraviolet irradiation. Photocatalysis of AB and AZM were carried under UV irradiation and maximum degradation of more than 95% was observed for both AB after 90 min and AZM after 4 h, respectively. The high-performance liquid chromatography (HPLC) was used to monitor the concentration of AZM, whereas spectroscopic method for AB. The photocatalysis followed pseudo-first-order reaction kinetics and the plausible degradation mechanism was put forth based on radical trapping experiment. Overall, this work demonstrates an efficient and simple method of detoxification of AB and AZM from water samples. Thus, as-synthesized material is anticipated to be a promising photocatalyst for the remediation of dye and antibiotic-contaminated water.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-021-06609-8