Ternary g-C3N4/ZnO/AgCl nanocomposites: Synergistic collaboration on visible-light-driven activity in photodegradation of an organic pollutant

• Published in: Applied surface science Vol. 358; pp. 261 - 269
• Main Authors: Akhundi, Anise, Habibi-Yangjeh, Aziz
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.2015
• Subjects: Cooperation; g-C3N4/ZnO/AgCl; Morphology; Nanocomposite; Nanocomposites; Photocatalysis; Photocatalyst; Photocatalysts; Reusable; Scavengers; Visible-light-driven; Zinc oxide; Nanocomposite; Photocatalyst; Visible-light-driven; g-C3N4/ZnO/AgCl
• ISSN: 0169-4332; 1873-5584
• DOI: 10.1016/j.apsusc.2015.08.149

•Novel ternary g-C3N4/ZnO/AgCl nanocomposites were prepared using a facile method.•g-C3N4/ZnO/AgCl (40%) has superior activity in degradation of RhB under visible-light.•The activity is 7.5 and 6-fold higher than g-C3N4/ZnO and g-C3N4/AgCl, respectively.•There are synergistic collaboration between ZnO and AgCl in enhancing the activity. The present work demonstrates the preparation of ternary g-C3N4/ZnO/AgCl nanocomposites, as novel visible-light-driven photocatalysts, using a facile large-scale methodology. The microstructure, morphology, purity, thermal, and spectroscopic properties of the prepared samples were studied using XRD, TEM, EDX, TG, UV–vis DRS, FT-IR, and PL techniques. Compared with the g-C3N4/ZnO and g-C3N4/AgCl nanocomposites, the g-C3N4/ZnO/AgCl nanocomposites displayed higher photocatalytic activity for degradation of rhodamine B under visible-light irradiation. Photocatalytic activity of the g-C3N4/ZnO/AgCl (40%) nanocomposite is about 9.5, 7.5, and 6-fold higher than those of the g-C3N4, g-C3N4/ZnO, and g-C3N4/AgCl samples, respectively. The enhanced photocatalytic activity of the nanocomposites was mainly attributed to efficiently separation of the charge carriers by synergistic collaboration of ZnO and AgCl in removing photogenerated electrons from g-C3N4. Furthermore, the results showed that the photocatalytic activity of the nanocomposite considerably depends on the preparation time, calcination temperature, and scavengers of the reactive species. Finally, the nanocomposite was found to be a reusable photocatalyst.