Construction of rGO Supported Integrative NiFe2O4/g‐C3N4 Nanocomposite: Role of Charge Transfer for Boosting the OH. Radical Production to Enhance the Photo‐Fenton Degradation. Issue 31 (18th August 2020)

• Record Type: Journal Article
• Authors: Palanivel, Baskaran; Alagiri, Mani
• Is Part Of: ChemistrySelect. Volume 5:Issue 31(2020)
• Page Start: 9765
• Page End: 9775
• Publication Date: 2020-08-18
• Subjects: Heterogeneous catalysis -- Photocatalysis -- Photo-Fenton reaction -- Radicals -- Visible light; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202002519
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: The facile sol‐gel and hydrothermal method have been used to prepare the ternary heterojunction of rGO supported NiFe2 O4 /g‐C3 N4 nanocomposite. The structural, morphological, optical, magnetic, and charge transport properties of the prepared nanoparticles were analyzed by various analytical methods. The supportive rGO helps to harvest the more amount of visible light and helps to electron transformation was confirmed by UV‐vis‐DRS and PL spectroscopy studies. The rGO acts as an electron transport supporting layer for enhancement of radical production for effective dye degradation reaction under LED and sunlight irradiation. In particular, 10GO/NFO/g‐CN ternary nanocomposite exhibits the highest photo‐Fenton degradation when compared to other photocatalysts. They produced a large amount of OH radicals that were beneficial for the photocatalytic process. The possible reaction mechanism and the active species for the dye degradation process were investigated by elemental trapping experiment and TA test. The recycling process proves the stability of the prepared photocatalyst. Hence, the reported ternary heterojunction could be a superior candidate for environmental remediation applications. Abstract : In this report, the reduced graphene oxide (rGO) was used as an electron transport layer and supporting layer for integrative NiFe2 O4 deposited g‐C3 N4 nanosheet heterojunction. The prepared ternary heterojunction composite exhibits the superior photo‐Fenton like catalytic activity towards the rhodamine B dye molecule degradation in the presence of H2 O2 under commercial 40 W LED light and direct sunlight illumination. The synergistic interaction between the rGO nanosheet and g‐C3 N4 /NiFe2 O4 heterojunction helps to inhibit the charge carrier's recombination and helps to transport the electron for the better reduction process.