ItemArticle

Efficient Photocatalytic Degradation of Methylene Blue From Aqueous Solution Using Hybrid Biomass-Derived Nanostructured Carbon-TiO2 Photocatalyst

Title
Efficient Photocatalytic Degradation of Methylene Blue From Aqueous Solution Using Hybrid Biomass-Derived Nanostructured Carbon-TiO2 Photocatalyst
Creator
Sharma, Aman; Shivanna, Jyothi Mannekote; Gupta, Navneet Kumar; Menezes, Prashanth W.; Hegde, Gurumurthy
Description
Industrial dye usage results in substantial wastewater discharge, posing environmental and health hazards. Hence, developing efficient, sustainable, and cost-effective treatment technologies is crucial. Photocatalysis using TiO? has emerged as a promising approach for dye degradation. This study explores the photocatalytic removal of methylene blue (MB), a model dye pollutant, using a composite of biomass-derived carbon nanoparticles (CNPs) and nanosized TiO? under UV light. The CNPs were synthesized via one-step pyrolysis from waste coffee leaves, offering a sustainable carbon source. The resulting CNPs (CL-10) and the TiO?-CNP composite (PC@CL-10) were thoroughly characterized using advanced techniques. Incorporating carbon significantly reduces the band gap of TiO? from ?3.2eV to 2.90eV, enhancing photocatalytic activity. Degradation studies under varying catalyst doses, dye concentrations, and pH levels demonstrate effective MB removal under UV irradiation. Photocatalytic experiments revealed up to 99% degradation of MB under UV light, while tests conducted in the dark showed negligible activity, confirming the light-dependent efficiency. Kinetic analysis indicated that intra-particle diffusion (IPD) governs the dye degradation process. Moreover, recyclability tests over seven cycles showed consistent performance with minimal decline, highlighting the catalyst's stability and reusability. These findings suggest that PC@CL-10 is a highly effective, low-cost photocatalyst with strong potential for large-scale wastewater treatment applications. 2025 The Author(s). Chemistry A European Journal published by Wiley-VCH GmbH.
Source
Chemistry - A European Journal;Volume;31;Issue;44;Article No.;e202501564;
Date
01-01-2025
Publisher
John Wiley and Sons Inc
Subject
biomass; biowaste-derived materials; coffee leaves; dye degradation; methylene blue remediation; photocatalysis
Coverage
Sharma A., Department of Chemistry, Christ University, Bengaluru, 560029, India, Centre for Advanced Research and Development (CARD), Christ University, Bengaluru, 560029, India; Shivanna J.M., Nitte (Deemed to be University), Nitte Meenakshi Institute of Technology (NMIT), Department of Chemistry, Bengaluru, 560064, India; Gupta N.K., Centre for Sustainable Technologies, Indian Institute of Science, Gulmohar Marg, Mathikere, Bengaluru, 560012, India; Menezes P.W., Department of Material Chemistry for Catalysis, Helmholtz- Zentrum f Materialien und Energie, Albert-Einstein-Str. 15, Berlin, 12489, Germany, Department of Chemistry, Technical Univerisity of Berlin, Stra des 17 Juni 135. Sekr. C2, Berlin, 10623, Germany; Hegde G., Department of Chemistry, Christ University, Bengaluru, 560029, India, Centre for Advanced Research and Development (CARD), Christ University, Bengaluru, 560029, India
Rights
All Open Access; Green Open Access; Hybrid Gold Open Access
Relation
ISSN: 9476539; CODEN: CEUJE
Format
online
Language
English
Type
Article

Citation

Sharma, Aman; Shivanna, Jyothi Mannekote; Gupta, Navneet Kumar; Menezes, Prashanth W.; Hegde, Gurumurthy, “Efficient Photocatalytic Degradation of Methylene Blue From Aqueous Solution Using Hybrid Biomass-Derived Nanostructured Carbon-TiO2 Photocatalyst,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 18, 2026, https://archives.christuniversity.in/items/show/21759.

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