TiO? and ZnO based ternary nanocomposites coupled with gC?N? and tetra-amino zinc phthalocyanine for enhanced oxygen evolution reaction performance
Electrocatalyst; Graphitic carbon nitride; Oxygen evolution reaction; Tetra amino zinc phthalocyanine; Water splitting
Electrocatalytic water splitting is a sustainable approach to address the energy crisis driven by the rapid growth of global population. The development of affordable and efficient electrocatalysts is inevitable in advancing the field. In the current study, TiO2NPs-TAZnPC-gC3N4 (TiO2 nanoparticles, tetra amino zinc phthalocyanine, and gC?N?) and ZnONPs-TAZnPC-gC3N4 (ZnO nanoparticles, tetra amino zinc phthalocyanine, and gC?N?) ternary nanocomposites have been prepared using a dispersion method. The structural identity of nanoparticles and the effective incorporation of additional moieties into the final system are validated using powder X-ray diffraction analysis and confirmed by X-ray photoelectron spectroscopy (XPS) analysis. Transmission electron microscopy (TEM) images reveal the sheet-like structures of gC3N4 and TAZnPC, decorated with spherical TiO2NPs and hexagonal ZnONPs. The prepared ternary composites are evaluated for their electrocatalytic water splitting performance. In particular, the electrocatalysts reveal excellent oxygen evolution reaction (OER) capabilities with overpotentials of 420 mV and 450 mV for TiO2NPs-TAZnPC-gC3N4 and ZnONPs-TAZnPC-gC3N4, respectively. 2025 Elsevier B.V.
Rajappa, Shwetha; Kotresh, Harish Makri Nimbegondi; Anand, Samika; Sunajadevi, Kalathiparambil Rajendra Pai; Mohan, Mothi Krishna; Devendrachari, Mruthyunjayachari Chattanahalli; Chundattu, Sony J.; Daniel, Nobi Kunnathu
Colloids and Surfaces A: Physicochemical and Engineering Aspects;Volume;718;Issue;;Article No.;136884;
All Open Access; Hybrid Gold Open Access
https://doi.org/10.1016/j.colsurfa.2025.136884 https://www.scopus.com/pages/publications/105002312960?origin=resultslist
Rajappa S., Department of Sciences and Humanities, School of Engineering and Technology, Christ University, Mysore Road, Kumbalagodu, Bangalore, 560074, India; Kotresh H.M.N., Department of Chemistry, Acharya Institute of Technology, Karnataka, Bangalore, 560107, India; Anand S., Department of Chemistry, Christ University, Karnataka, Bengaluru, 560029, India; Sunajadevi K.R.P., Department of Chemistry, Christ University, Karnataka, Bengaluru, 560029, India; Mohan M.K., Department of Sciences and Humanities, School of Engineering and Technology, Christ University, Mysore Road, Kumbalagodu, Bangalore, 560074, India; Devendrachari M.C., Interaction Laboratory, Future Convergence Engineering, Advanced Technology Research Center, Korea University of Technology and Education, Chungcheongnam-do, Cheonan-si, 31253, South Korea; Chundattu S.J., Department of Sciences and Humanities, School of Engineering and Technology, Christ University, Mysore Road, Kumbalagodu, Bangalore, 560074, India; Daniel N.K., Department of Sciences and Humanities, School of Engineering and Technology, Christ University, Mysore Road, Kumbalagodu, Bangalore, 560074, India