Environmentally friendly fabrication of Ag nanoparticles decorated on g-C3N4 for enhancing the photodegradation of RhB

Abstract

This work presents an eco-friendly method for the preparation of a silver nanoparticle (AgNP) decorated g-C3N4 nanocomposite using purple leaf extract as a green reduction agent. The photocatalytic performance of the resulting nanocomposite was studied through the degradation of rhodamine B (RhB) dye pollution in an aqueous solution. X-ray diffraction analysis of powder samples revealed the coexistence of face-centered cubic AgNP crystalline and g-C3N4 structures, with a slight shift in the dominant diffraction peak (002) of g-C3N4, indicating successful incorporation of AgNPs. Optical analysis showed a reduction in the bandgap of the nanocomposite compared with that of the pure g-C3N4 sample. The photocatalytic ability of the nanocomposites was tested through the degradation of RhB dye, which was significantly enhanced by the presence of AgNPs, achieving a maximum degradation efficiency of approximately 95.3% after only 75 minutes of irradiation using the Ag@g-C3N4 nanocomposite with 7 wt% AgNPs as a photocatalyst. This enhancement is attributed to the efficient charge carrier separation and suppressed recombination rate at the photocatalyst interfaces.

Graphical abstract: Environmentally friendly fabrication of Ag nanoparticles decorated on g-C3N4 for enhancing the photodegradation of RhB

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Article information

Article type
Paper
Submitted
05 Jun 2025
Accepted
02 Jul 2025
First published
10 Jul 2025
This article is Open Access
Creative Commons BY license

Nanoscale Adv., 2025, Advance Article

Environmentally friendly fabrication of Ag nanoparticles decorated on g-C3N4 for enhancing the photodegradation of RhB

L. A. Luu Thi, Q. T. Trieu, T. H. Trinh, T. M. Nguyen Thi, C. T. Nguyen, T. T. Tung and N. X. Sang, Nanoscale Adv., 2025, Advance Article , DOI: 10.1039/D5NA00552C

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