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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| Format: | Article |
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Department of Chemistry, Universitas Gadjah Mada
2025-01-01
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| Series: | Indonesian Journal of Chemistry |
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| Online Access: | https://jurnal.ugm.ac.id/ijc/article/view/100142 |
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| author | Eko Sri Kunarti Dewi Agustiningsih Fajar Inggit Pambudi Akhmad Syoufian Sri Juari Santosa |
| author_facet | Eko Sri Kunarti Dewi Agustiningsih Fajar Inggit Pambudi Akhmad Syoufian Sri Juari Santosa |
| author_sort | Eko Sri Kunarti |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-4b227649331747fabaf31ae70a22804e |
| institution | Kabale University |
| issn | 1411-9420 2460-1578 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Department of Chemistry, Universitas Gadjah Mada |
| record_format | Article |
| series | Indonesian Journal of Chemistry |
| spelling | doaj-art-4b227649331747fabaf31ae70a22804e2025-02-03T04:32:43ZengDepartment of Chemistry, Universitas Gadjah MadaIndonesian Journal of Chemistry1411-94202460-15782025-01-0125123224310.22146/ijc.10014236804Enhanced 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 BlueEko Sri Kunarti0Dewi Agustiningsih1Fajar Inggit Pambudi2Akhmad Syoufian3Sri Juari Santosa4Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara, Yogyakarta 55281, IndonesiaDepartment of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara, Yogyakarta 55281, IndonesiaDepartment of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara, Yogyakarta 55281, IndonesiaDepartment of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara, Yogyakarta 55281, IndonesiaDepartment of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara, Yogyakarta 55281, IndonesiaEnvironmental 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.https://jurnal.ugm.ac.id/ijc/article/view/100142cofe2o4/tio2 compositedopingmethylene bluesilversulfur |
| spellingShingle | Eko Sri Kunarti Dewi Agustiningsih Fajar Inggit Pambudi Akhmad Syoufian Sri Juari Santosa 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 Indonesian Journal of Chemistry cofe2o4/tio2 composite doping methylene blue silver sulfur |
| title | 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 |
| title_full | 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 |
| title_fullStr | 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 |
| title_full_unstemmed | 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 |
| title_short | 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 |
| title_sort | 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 |
| topic | cofe2o4/tio2 composite doping methylene blue silver sulfur |
| url | https://jurnal.ugm.ac.id/ijc/article/view/100142 |
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