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Fe-doped nano-cobalt oxide green catalysts for sulfoxidation and photo degradation

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Abstract

Nanoparticles (NPs) of cobalt oxide and Fe/Ni-doped cobalt oxide have been prepared by the co-precipitation method. XPS analysis established the chemical nature of these NPs in terms of atomic as well as molecular formulations, and EDAX analysis complemented the XPS results displaying the presence of Fe and Ni atoms in the cobalt oxide NPs revealing successful doping of Fe and Ni in cobalt oxide NPs. The impact of Fe and Ni-doping on the structure and physico-chemical properties of cobalt oxide NPs was also established by XPS analysis. The presence of metal-oxide bonds was further established by FTIR (Fourier transform infrared spectroscopy) and HRTEM (high-resolution transmission electron microscopy) analysis confirmed the formation of NPs. Among bare and Fe/Ni-doped cobalt oxide NPs, Fe-doped cobalt oxide NPs showed maximum photocatalytic activity against methylene blue as well as Fe-doped cobalt oxide NPs also acted as an excellent catalyst for the sulfoxidation of sulfides with 99% conversion and 95% selectivity under green reaction conditions utilizing water as a solvent.

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Acknowledgements

This research was partially supported by the “Project Monitoring Unit of RUSA—Equity Initiative” of Himachal Pradesh University.

Funding

This study was funded by Rashtriya Uchchatar Shiksha Abhiyan, 1-10/2020-HPU(DS)-RUSA.

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AS helped in nanomaterial synthesis, data curation; MSM was involved in catalytic studies, resources; PP helped in catalytic studies; JB was involved in catalytic studies, formal analysis. DK and MK contributed to data curation, formal analysis; MST performed photocatalytic studies; SK helped in supervision, conceptualization, writing–original draft, writing–review & editing.

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Correspondence to Sunil Kumar.

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Soni, A., Maru, M.S., Patel, P. et al. Fe-doped nano-cobalt oxide green catalysts for sulfoxidation and photo degradation. Clean Techn Environ Policy (2023). https://doi.org/10.1007/s10098-023-02611-2

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  • DOI: https://doi.org/10.1007/s10098-023-02611-2

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