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Facile synthesis of niobium oxide as an effective catalytic material for degradation of methylene blue dye

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Abstract

Niobium is considered to have a good resistance in various chemical environments. However, during the corrosion process, a dense product that forms on the surface was used here as a catalyst for the degradation of the methylene blue dye. The niobium catalyst was formed at room temperature (28°–30 °C) by simple precipitation using immersion of sample in an alkali medium. X-ray diffraction spectroscopy and scanning electron microscopy confirmed the synthesis of Na8Nb6O19.13H2O and its octahedral shape, respectively. Thermogravimetry analysis indicated the thermal stability of the synthesized catalyst. X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy and Raman spectroscopic data show the presence of sodium, niobium and oxygen elements in the prepared catalyst. Methylene blue was degraded effectively (90%) and the process obeys the pseudo-first-order kinetics and the degradation was completed in 0.9934 min−1.

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Acknowledgements

R.C. Barik is grateful to CSIR for financial support under CSIR-FIRST (Fundamental and Innovative Research in Science of Tomorrow) scheme (MLP 1001). All the authors wish to thank the CSIR-CECRI (CECRI/PESVC/Pubs/2022-088) and Central Instrument Facility (CIF), CSIR-CECRI for the characterization facilities. Bharathidasan University, Tiruchirappalli, India, is gratefully acknowledged for the Research Associate fellowship of C. Karthikeyan in the form of RUSA 2.0 (Biological Science)

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Correspondence to R. C. Barik.

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Editorial responsibility: J Aravind.

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Karthikeyan, C., Barik, R.C. & Rajesh Kannan, V. Facile synthesis of niobium oxide as an effective catalytic material for degradation of methylene blue dye. Int. J. Environ. Sci. Technol. 21, 3337–3344 (2024). https://doi.org/10.1007/s13762-023-05084-4

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  • DOI: https://doi.org/10.1007/s13762-023-05084-4

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