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

Chúng tôi vui mừng thông báo rằng PGS.TS. Nguyễn Xuân Sáng gần đây đã xuất bản công trình của họ có tựa đề "Environmentally friendly fabrication of Ag nanoparticles decorated on g-C3N4 for enhancing the photodegradation of RhB" trên tạp chí RSC Advances.

Tóm tắt:

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.