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Synthesis of g-C3N4/SmFeO3 nanosheets Z-scheme based nanocomposites as efficient visible light photocatalysts for CO2 reduction and Congo red degradation

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Abstract

In this research work, g-C3N4/SmFeO3 nanosheets Z-scheme based nanocomposites were effectively synthesized by employing PVP as a structure-manipulating agent. The comparative investigations proved that g-C3N4 and SmFeO3 nanosheets have exceptional performances and photocatalytic activities as compared to SmFeO3 and g-C3N4 nanoparticles. Based on TEM, HRTEM, XRD, DRS, XPS, PL, FTIR, PEC, BET, and FS spectra it is proved that the coupling of CN nanosheets has effectively enlarged the surface area and enhanced the charge separation of SmFeO3 nanosheets. Compared to pristine SmFeO3 nanosheets, the most active 3CN-SFOS nanocomposite showed ~ 3.5 times improvement in catalytic activities for CO2 reduction and Congo red degradation. Adding more, the scavenger tests confirmed that ⋅O2− and ⋅OH are the most active species for decontamination of Congo red. Finally, our present innovative work will open a novel gateway for the preparation of g-C3N4/SmFeO3 nanosheets based Z-scheme nanocomposites and their applications for CO2 reduction and environment protection.

Graphical abstract

TOC Diagram: Schematic representation of the energy bandgaps, photogenerated charge separation, and photocatalytic activities improvement mechanism over g-C3N4/SmFeO3 nanosheets Z-scheme based nanocomposites

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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgments

The authors are grateful for financial support from a research start-up fund for the introduction of young talent at Jiangsu University of Science and Technology (Grant No. 1112932205).

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Authors and Affiliations

  1. Department of Chemistry, Government College University Faisalabad, Faisalabad, 38000, Pakistan

    Humaira Asghar & Muhammad Saeed

  2. School of Environmental & Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212100, Jiangsu, China

    Iltaf Khan

  3. School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212100, Jiangsu, China

    Ping Wu

  4. Department of Physics, School of Science, Jiangsu University of Science and Technology, Zhenjiang, 212100, Jiangsu, China

    Aftab Khan

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Asghar, H., Khan, I., Saeed, M. et al. Synthesis of g-C3N4/SmFeO3 nanosheets Z-scheme based nanocomposites as efficient visible light photocatalysts for CO2 reduction and Congo red degradation. Journal of Materials Research 38, 2986–2997 (2023). https://doi.org/10.1557/s43578-023-01034-5

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