ItemArticle

Role of Ionic Liquids in Hydrothermal Synthesis of Li-Doped CuO Nanoparticles: Improved Photocatalytic, Electrochemical, and Antibacterial Properties

Title
Role of Ionic Liquids in Hydrothermal Synthesis of Li-Doped CuO Nanoparticles: Improved Photocatalytic, Electrochemical, and Antibacterial Properties
Creator
Ravishankar, T.N.; Reddy, R. Mohan; Adarsha, J.R.; Harisha, S.; Ravishankar, P.N.; Ananda, A.; Shilpa, B.M.
Description
Lithium-doped copper oxide nanoparticles (Li-CuO NPs) were synthesized via an ionic-liquid-assisted hydrothermal method to examine the role of ionic liquids in tailoring structural and functional properties. PXRD analysis confirmed phase-pure monoclinic CuO (JCPDS/PDF No. 45-0937), with a reduction in crystallite size from 46nm (CuO) to 39nm upon Li incorporation. BET analysis revealed mesoporous characteristics with a specific surface area of 85m2 g?1 and an average pore diameter of 10nm. Optical studies showed a red shift in absorption and a band gap narrowing from 2.61eV (CuO) to 2.35eV (Li-CuO), indicating enhanced visible-light absorption. The photocatalytic performance of Li-CuO NPs was evaluated using Evans Blue dye under visible-light irradiation, achieving 96.67% degradation within 2h, along with good stability over repeated fourth cycles. The effects of various parameters, including pH, catalyst loading, dye concentration, illumination intensity, and the recyclability and reusability of the catalyst, were also investigated. Electrochemical studies demonstrated enhanced redox activity and improved charge-transfer behavior for dye sensing. In addition, Li-CuO NPs exhibited significant antibacterial activity, attributed to lithium-induced defects, and increased surface reactivity. These findings highlight ionic-liquid-assisted lithium doping as an effective approach for improving the multifunctional performance of CuO-based nanomaterials. 2026 Wiley-VCH GmbH.
Source
ChemistrySelect;Volume;11;Issue;6;Article No.;e06054;
Date
01-01-2026
Publisher
John Wiley and Sons Inc
Subject
antimicrobial activity; cyclic voltammetry; ionic liquid; Li-CuO nanoparticles; photocatalytic degradation
Coverage
Ravishankar T.N., Department of Chemistry, B.M.S. College of Engineering, Bangalore, India; Reddy R.M., Department of Chemistry, B.M.S. College of Engineering, Bangalore, India; Adarsha J.R., Department of Chemistry, Global Academy of Technology, Bangalore, India; Harisha S., Centre For Nanosciences, Department of Chemistry, K.S. Institute of Technology, Bangalore, India; Ravishankar P.N., Department of Chemistry, B.M.S. College of Engineering, Bangalore, India; Ananda A., Department of Chemistry, Dayananda Sagar Academy of Technology & Management Udayapura, Bangalore, India; Shilpa B.M., Department of Psychology, Christ-Deemed to Be University, Kengeri Campus, Bangalore, India
Rights
Restricted Access; Hardcopy may be available in the library
Relation
ISSN: 23656549;
Format
online
Language
English
Type
Article

Citation

Ravishankar, T.N.; Reddy, R. Mohan; Adarsha, J.R.; Harisha, S.; Ravishankar, P.N.; Ananda, A.; Shilpa, B.M., “Role of Ionic Liquids in Hydrothermal Synthesis of Li-Doped CuO Nanoparticles: Improved Photocatalytic, Electrochemical, and Antibacterial Properties,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 21, 2026, https://archives.christuniversity.in/items/show/21820.

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