ItemArticle

Fabrication of LaCoO3/g-C3N5 Z-scheme photo catalyst for Allura Red dye degradation, ascorbic acid sensing and hydrogen evolution studies

Title
Fabrication of LaCoO3/g-C3N5 Z-scheme photo catalyst for Allura Red dye degradation, ascorbic acid sensing and hydrogen evolution studies
Creator
Roopashree, B.N.; Gurushantha, K.; Ashly., P.C.; Kottam, Nagaraju; Meena, S.; Raghu, G.K.; Sunajadevi, Kalathiparambil Rajendra Pai
Description
Production of hydrogen by water splitting through photocatalytic process under visible light from waste water is one of the potential green energy technologies. In this study, LaCoO3, g-C3N5, LaCoO3/g-C3N5 (1:1), (1:2) and (2:1) weight ratio nanocomposites (NCs) have been successfully synthesized using a solution combustion, hydrothermal and probe sonication method. The X-Ray Diffraction (XRD) confirmed the compound formed with the crystal size range 20 ?30?nm. The studies of Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) verify the morphology of the particles; band gap of the range 1.52?eV identified from Ultraviolet-Visible (UVvis) studies. The findings demonstrate that Z-scheme heterostructures have developed on the interfaces between the layered flake-like g-C3N5 and the perovskite-type oxides LaCoO3, which improve the absorption of visible light, the separation of photogenerated electron-hole pairs, and the transformation of photogenerated electrons. From the different ratio of synthesized nanoparticles (NPs), the LaCoO3/g-C3N5 (2:1) shows enhanced photocatalytic activity of 99.87?% for degradation of Allura red dye in visible light irradiation. For the first time, the produced nanomaterials were tested for ascorbic acid sensing at extremely low concentrations with a 0.12??M detection limit. The prepared nanomaterials were assessed for their electrocatalytic water splitting operation. Especially, the nanomaterial, LaCoO3/g-C3N5 (2:1) reveal exceptional hydrogen evolution reaction (HER) and also oxygen evolution reaction (OER) capabilities with overpotential of 79?mV and 450?mV, respectively. Hence, the prepared nanomaterials are used for multifunctional applications. 2026 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license. http://creativecommons.org/licenses/by-nc-nd/4.0/
Source
Next Materials;Volume;11;Issue;;Article No.;101775;
Date
01-01-2026
Publisher
Elsevier B.V.
Subject
HER and OER; Nanomaterials; Overpotential; Photocatalytic water splitting
Coverage
Roopashree B.N., Department of Chemistry, M. S. Ramaiah Institute of Technology (affiliated to VTU), Bengaluru, 560054, India; Gurushantha K., Department of Chemistry, M. S. Ramaiah Institute of Technology (affiliated to VTU), Bengaluru, 560054, India; Ashly. P.C., Department of Chemistry, Sir M. Visvesvaraya institute of technology, Bengaluru, 562157, India; Kottam N., Department of Chemistry, M. S. Ramaiah Institute of Technology (affiliated to VTU), Bengaluru, 560054, India; Meena S., Department of Chemistry, Dayananda Sagar College of Engineering, Bengaluru, 560111, India; Raghu G.K., Department of Chemistry, Siddaganga Institute of Technology, Tumakuru, 572102, India; Sunajadevi K.R.P., Department of Chemistry, Christ University, Karnataka, Bengaluru, 560029, India
Rights
All Open Access; Gold Open Access
Relation
ISSN: 29498228;
Format
online
Language
English
Type
Article

Citation

Roopashree, B.N.; Gurushantha, K.; Ashly., P.C.; Kottam, Nagaraju; Meena, S.; Raghu, G.K.; Sunajadevi, Kalathiparambil Rajendra Pai, “Fabrication of LaCoO3/g-C3N5 Z-scheme photo catalyst for Allura Red dye degradation, ascorbic acid sensing and hydrogen evolution studies,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 18, 2026, https://archives.christuniversity.in/items/show/22423.

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