Facile Synthesis of SnO2/g-C3N4 nanocomposite for the photocatalytic degradation of Methylene Blue dye under visible light irradiation

Year : 2026 | Volume : 14 | Special Issue 01 | Page : 1835 1845
    By

    S. Priya,

  • R.B. Shivani,

  • M. Sundararajan,

  • S. Yuvaraj,

  • R. Mohan Kumar,

  1. Research Scholar, Department of Physics, Presidency College(A), Chennai, Tamil Nadu, India
  2. Research Scholar, Department of Physics, Presidency College(A), Chennai, Tamil Nadu, India
  3. Assistant Professor, Department of Physics, Presidency College(A), Chennai, Tamil Nadu, India
  4. Associate Professor, Department of Physics, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Vel Nagar, Avadi, Chennai, Tamil Nadu,
  5. Associate Professor, Department of Physics, Presidency College(A), Chennai, Tamil Nadu, India

Abstract

This work reports the nanoscale samples of pure tin dioxide (SnO₂), graphitic carbon nitride (g-C₃N₄), and their composite (SnO₂/g-C₃N₄) were successfully synthesized using the co-precipitation technique. The synthesized materials were extensively analyzed using multiple characterization techniques such as Powder X-ray Diffraction (PXRD), High-Resolution Scanning Electron Microscopy (HR-SEM), Energy-Dispersive X-ray Spectroscopy (EDAX), Fourier Transform Infrared Spectroscopy (FTIR), UV-Visible Spectroscopy, and High-Resolution Transmission Electron Microscopy (HR-TEM). Results from PXRD and EDAX confirmed that the materials possessed high purity. HR-SEM imaging revealed that both pure SnO₂ and g-C₃N₄ exhibited spherical particle morphology. In contrast, the SnO₂/g-C₃N₄ composite displayed a non-spherical structure, which was further validated by High-Resolution Transmission Electron Microscopy (HR-TEM). UV-Vis spectral analysis showed a noticeable blue shift in the absorption edge of the SnO₂/g-C₃N₄ composite compared to pure SnO₂, indicating enhanced optical properties and the band gap values is also calculated for all the samples. FTIR spectral analysis showed the stretching vibrations in pure SnO2, g-C3N4 and SnO2/g-C3N4 nanocomposite materials. Photocatalytic experiments demonstrated that the SnO₂/g-C₃N₄ nanocomposite was highly effective in degrading methylene blue dye under visible light, achieving over 71% degradation within 150 minutes. These results suggest that the SnO₂/g-C₃N₄ composite is a promising candidate for the removal of toxic organic pollutants through visible-light-driven photocatalysis

Keywords: SnO2/g-C3N4 nanocomposite, Co-precipitation, PXRD, HR-SEM, FTIR, Methylene blue dye, Photocatalytic activity.

[This article belongs to Special Issue under section in Journal of Polymer & Composites (jopc)]

How to cite this article:
S. Priya, R.B. Shivani, M. Sundararajan, S. Yuvaraj, R. Mohan Kumar. Facile Synthesis of SnO2/g-C3N4 nanocomposite for the photocatalytic degradation of Methylene Blue dye under visible light irradiation. Journal of Polymer & Composites. 2026; 14(01):1835-1845.
How to cite this URL:
S. Priya, R.B. Shivani, M. Sundararajan, S. Yuvaraj, R. Mohan Kumar. Facile Synthesis of SnO2/g-C3N4 nanocomposite for the photocatalytic degradation of Methylene Blue dye under visible light irradiation. Journal of Polymer & Composites. 2026; 14(01):1835-1845. Available from: https://journals.stmjournals.com/jopc/article=2026/view=238798


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Special Issue Subscription Original Research
Volume 14
Special Issue 01
Received 17/10/2025
Accepted 27/10/2025
Published 18/03/2026
Publication Time 152 Days
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