ItemArticle

Green Fuel Combustion Synthesis of CeO2 and Ag/CeO2 Nanoparticles for Photocatalytic and Antibacterial Applications

Title
Green Fuel Combustion Synthesis of CeO2 and Ag/CeO2 Nanoparticles for Photocatalytic and Antibacterial Applications
Creator
Ravishankar, T.N.; Adarsha, J.R.; Reddy, R.Mohan; Harisha, S.; Ananda, A.; Shilpa, B.M.
Description
Silver-doped cerium oxide nanoparticles (Ag/CeO2 NPs) were synthesized using Ricinus communis seed extract as a bio-derived fuel in a solution combustion method. The combustion reaction, carried out at 450C with AgNO3 and (NH4)2[Ce (NO3)6] as metal precursors, produced CeO2 and Ag/CeO2 NPs. Their structure and morphology were estimated by P-XRD and TEM, which confirmed the formation of cerianite with cubic fluorite CeO2 crystal structure, while SEM revealed a porous morphology characteristic of combustion-driven gas evolution. EDS revealed the presence of Ce, O, and Ag in the Ag/CeO2 NPs. Optical studies, including UVVis and PL, showed that Ag incorporation narrowed the band gap and improved charge-carrier separation, contributing to enhanced visible-light activity. XPS analysis verified the successful incorporation of Ag species into the CeO2 lattice. Among the investigated NPs, the 0.3 wt% Ag/CeO2 sample exhibited the lowest PL intensity, indicating improved charge-carrier separation, which was further supported by its high quantum yield (0.789). These results correlate with its enhanced photocatalytic activity. The nanomaterials were evaluated for dye degradation, Cr (VI) reduction, photocatalytic H2 evolution, and antibacterial activity. The influences of pH, catalyst dosage, dye concentration, light intensity, radical scavengers, and recyclability were also systematically assessed. Overall, the study presents a sustainable synthesis approach for high-performance Ag/CeO2 NPs with broad potential in environmental remediation and antimicrobial applications. 2026 The Author(s). Asia-Pacific Journal of Chemical Engineering published by Curtin University and John Wiley & Sons Ltd.
Source
Asia-Pacific Journal of Chemical Engineering;
Date
01-01-2026
Publisher
John Wiley and Sons Ltd
Subject
Ag/CeO2 NPs; antibacterial activity; H2 generation; photocatalytic degradation; Ricinus. communis
Coverage
Ravishankar T.N., Department of Chemistry, B.M.S. College of Engineering, Karnataka, Bangalore, India; Adarsha J.R., Department of Chemistry, Global Academy of Technology, Karnataka, Bangalore, India; Reddy R., Department of Chemistry, B.M.S. College of Engineering, Karnataka, Bangalore, India; Harisha S., Centre for Nanosciences, Department of Chemistry, K.S. Institute of Technology, Karnataka, Bangalore, India; Ananda A., Department of Chemistry, Dayananda Sagar Academy of Technology & Management, Karnataka, Bangalore, India; Shilpa B.M., Department of Psychology, Christ (Deemed to be University), Karnataka, Bangalore, India
Rights
All Open Access; Hybrid Gold Open Access
Relation
ISSN: 19322135;
Format
online
Language
English
Type
Article

Citation

Ravishankar, T.N.; Adarsha, J.R.; Reddy, R.Mohan; Harisha, S.; Ananda, A.; Shilpa, B.M., “Green Fuel Combustion Synthesis of CeO2 and Ag/CeO2 Nanoparticles for Photocatalytic and Antibacterial Applications,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 21, 2026, https://archives.christuniversity.in/items/show/21742.

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