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

Swaminathan Arumugam; Thirugnanam Bavani; Manickam Selvaraj; Badria M Al-Shehri; Mani Preeyanghaa; Sieon Jung; Jayaraman Theerthagiri; Bernaurdshaw Neppolian; Sepperumal Murugesan; Jagannathan Madhavan; Myong Yong Choi

doi:10.1016/j.chemosphere.2022.137552

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

Chemosphere. 2023 Feb:313:137552. doi: 10.1016/j.chemosphere.2022.137552. Epub 2022 Dec 13.

Affiliations

¹ Solar Energy Lab, Department of Chemistry, Thiruvalluvar University, Vellore, 632 115, India.
² Department of Chemistry, Faculty of Science, King Khalid University, Abha, 61413, Saudi Arabia; Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia.
³ Department of Chemistry, Faculty of Science, King Khalid University, Abha, 61413, Saudi Arabia; Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia; Unit of Bee Research and Honey Production, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia.
⁴ Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India.
⁵ Core-Facility Center for Photochemistry & Nanomaterials, Department of Chemistry (BK21 FOUR), Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, Republic of Korea.
⁶ Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India.
⁷ School of Chemistry, Madurai Kamaraj University, Madurai, 625021, India.
⁸ Solar Energy Lab, Department of Chemistry, Thiruvalluvar University, Vellore, 632 115, India. Electronic address: jagan.madhavan@gmail.com.
⁹ Core-Facility Center for Photochemistry & Nanomaterials, Department of Chemistry (BK21 FOUR), Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, Republic of Korea. Electronic address: mychoi@gnu.ac.kr.

PMID: 36526136
DOI: 10.1016/j.chemosphere.2022.137552

Abstract

A novel FeMoO₄/g-C₃N₄-2D/2D Z-scheme heterojunction photocatalyst was prepared via wet chemical method. The observed structural morphology of FeMoO₄/g-C₃N₄ reveals the 2D-iron molybdate (FeMoO₄) nanoplates compiled with the 2D-graphitic carbon nitride (g-C₃N₄) nanosheets like structure. The photocatalytic activity of the g-C₃N₄, FeMoO₄, and FeMoO₄/g-C₃N₄ composites were studied via the degradation of Rhodamine B (RhB) as targeted textile dye under visible light irradiation (VLI). The optimal FeMoO₄/g-C₃N₄ (1:3 ratio of g-C₃N₄ 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-C₃N₄ 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-C₃N₄ heterojunction photocatalyst is a promising material for the remediation of wastewater relevant to elimination of toxic effect in marine environment.

Keywords: FeMoO(4)/g-C(3)N(4); Photocatalyst; Rhodamine B; Visible light; Wastewater treatment.

MeSH terms

Iron*
Light
Textiles
Wastewater*

Substances

Wastewater
Iron