Construction of direct FeMoO4/g–C3N4–2D/2D Z-scheme heterojunction with enhanced photocatalytic treatment of textile wastewater to eliminate the toxic effect in marine environment. (February 2023)

• Record Type: Journal Article
• Authors: Arumugam, Swaminathan; Bavani, Thirugnanam; Selvaraj, Manickam; Al-Shehri, Badria M.; Preeyanghaa, Mani; Jung, Sieon; Theerthagiri, Jayaraman; Neppolian, Bernaurdshaw; Murugesan, Sepperumal; Madhavan, Jagannathan; Choi, Myong Yong
• Is Part Of: Chemosphere. Volume 313(2023)
• Publication Date: 2023-02
• Subjects: FeMoO4/g-C3N4 -- Photocatalyst -- Rhodamine B -- Visible light -- Wastewater treatment; Pollution -- Periodicals; Pollution -- Physiological effect -- Periodicals; Environmental sciences -- Periodicals; Atmospheric chemistry -- Periodicals; 551.511
• DOI: 10.1016/j.chemosphere.2022.137552
• Languages: English
• ISSNs: 0045-6535

Abstract

Abstract: A novel FeMoO4 /g-C3 N4 -2D/2D Z-scheme heterojunction photocatalyst was prepared via wet chemical method. The observed structural morphology of FeMoO4 /g-C3 N4 reveals the 2D-iron molybdate (FeMoO4 ) nanoplates compiled with the 2D-graphitic carbon nitride (g-C3 N4 ) nanosheets like structure. The photocatalytic activity of the g-C3 N4, FeMoO4, and FeMoO4 /g-C3 N4 composites were studied via the degradation of Rhodamine B (RhB) as targeted textile dye under visible light irradiation (VLI). The optimal FeMoO4 /g-C3 N4 (1:3 ratio of g-C3 N4 and FeMoO4 ) composite show an enhanced degradation performance with rate constant value of 0.02226 min –1 and good stability even after three cycles. Thus, the h+ and O2 － are the key radicals in the degradation of RhB under VLI. It is proposed that the FeMoO4 /g-C3 N4 Z-scheme heterojunction effectively enhances the transfer and separation ability of e − /h + pairs, by the way increasing the photocatalytic efficiency towards the RhB degradation. Thus, the newly constructed Z-scheme FeMoO4 /g-C3 N4 heterojunction photocatalyst is a promising material for the remediation of wastewater relevant to elimination of toxic effect in marine environment. Graphical abstract: Image 1 Highlights: Novel Z-scheme FeMoO4 /g-C3 N4 heterojunction photocatalysts were constructed. Optimal FeMoO4 /g-C3 N4 show excellent degradation of Rhodamine B. Optimal FeMoO4 /g-C3 N4 exhibits excellent photostability under visible light. h + and O2 － radicals are playing major role in the degradation of RhB. Plausible mechanism for direct Z-scheme FeMoO4 /g-C3 N4 heterojunction was proposed.