Enhanced Photocatalytic Activity and Magnetic Properties of CoFe<sub>2</sub>O<sub>4</sub>/TiO<sub>2</sub>-Ag/S for Visible Light-Driven Photodegradation of Methylene Blue

Enhanced Photocatalytic Activity and Magnetic Properties of CoFe<sub>2</sub>O<sub>4</sub>/TiO<sub>2</sub>-Ag/S for Visible Light-Driven Photodegradation of Methylene Blue

Environmental concerns drive the need for effective photocatalysts that can operate under visible light to degrade organic pollutants in wastewater. This study investigated TiO2-based photocatalyst doped with Ag and S to enhance its visible-light response, modified further with CoFe2O4 to introduce...

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Bibliographic Details
Main Authors: Eko Sri Kunarti, Dewi Agustiningsih, Fajar Inggit Pambudi, Akhmad Syoufian, Sri Juari Santosa
Format: Article
Language:English
Published: Department of Chemistry, Universitas Gadjah Mada 2025-01-01
Series:Indonesian Journal of Chemistry
Subjects:
cofe2o4/tio2 composite
doping
methylene blue
silver
sulfur
Online Access:https://jurnal.ugm.ac.id/ijc/article/view/100142
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Summary:Environmental concerns drive the need for effective photocatalysts that can operate under visible light to degrade organic pollutants in wastewater. This study investigated TiO2-based photocatalyst doped with Ag and S to enhance its visible-light response, modified further with CoFe2O4 to introduce magnetic properties, resulting in a composite, CoFe2O4/TiO2-Ag/S. The synthesis was carried out by using cobalt nitrate hexahydrate and ferric nitrate nonahydrate for CoFe2O4 precursor, titanium tetraisopropoxide for TiO2 precursor, and silver nitrate with thiourea for Ag and S dopants. Results from characterization analyses, including FTIR, XRD, UV-vis, SEM-EDX, TEM, and VSM, confirmed the composite structure, with magnetic properties reflected in saturation magnetization of 10.69 emu g−1 and an extended UV-vis absorption edge indicating improved visible light activity. Photocatalytic tests for methylene blue degradation showed the highest performance (92%) with a 1:1 Ag:S ratio under visible light at pH 10 over 120 min, using 20 mg of catalyst in 5 ppm solution. Additionally, the composite demonstrated strong stability, retaining efficiency across six cycles of reuse.
ISSN:1411-9420
2460-1578

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