Methylene Blue Degradation with Sulfonated SPG20 Silica-Fe₂O₃ Hybrid Photocatalysts DOI Creative Commons
Maria Ulfa,

Puteri Khansa Salsabila,

Agung Nugroho Catur Saputro

и другие.

BULLETIN OF CHEMICAL REACTION ENGINEERING AND CATALYSIS, Год журнала: 2025, Номер 20(3), С. 441 - 457

Опубликована: Июнь 1, 2025

This study aims to synthesize and evaluate the photocatalytic performance of a modified mesoporous silica-based composite, Fe₂O₃/SPG₂₀–SO₃H, for methylene blue degradation. The catalyst was prepared via soft-template method using P123 surfactant gelatin as dual structure-directing agents. Characterization results confirmed formation Fe₂O₃ crystallites with dominant size 2.14 nm crystallinity 90.85%. FTIR spectra revealed presence –COOH, Si–O–Si, Si–OH, –OH groups, while sulfonate-related bands (–SO₃H, O=S=O) were not observed in XRD patterns, suggesting amorphous or poorly crystalline sulfonic groups. SEM analysis indicated rod-like morphology. Photocatalytic testing under various temperatures showed that Fe₂O₃/SPG₂₀–SO₃H achieved highest degradation efficiency at 70 °C, maintaining over 92.14 % up 120 minutes contact time. Lower (5 °C 15 °C) led reduced less stable activity. These indicate both sulfonation iron oxide impregnation, combined optimal operating temperature, significantly enhance silica systems, offering cost-effective environmentally friendly solution dye-contaminated wastewater treatment. Copyright © 2025 by Authors, Published BCREC Publishing Group. is an open access article CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Язык: Английский

Methylene Blue Degradation with Sulfonated SPG20 Silica-Fe₂O₃ Hybrid Photocatalysts DOI Creative Commons
Maria Ulfa,

Puteri Khansa Salsabila,

Agung Nugroho Catur Saputro

и другие.

BULLETIN OF CHEMICAL REACTION ENGINEERING AND CATALYSIS, Год журнала: 2025, Номер 20(3), С. 441 - 457

Опубликована: Июнь 1, 2025

This study aims to synthesize and evaluate the photocatalytic performance of a modified mesoporous silica-based composite, Fe₂O₃/SPG₂₀–SO₃H, for methylene blue degradation. The catalyst was prepared via soft-template method using P123 surfactant gelatin as dual structure-directing agents. Characterization results confirmed formation Fe₂O₃ crystallites with dominant size 2.14 nm crystallinity 90.85%. FTIR spectra revealed presence –COOH, Si–O–Si, Si–OH, –OH groups, while sulfonate-related bands (–SO₃H, O=S=O) were not observed in XRD patterns, suggesting amorphous or poorly crystalline sulfonic groups. SEM analysis indicated rod-like morphology. Photocatalytic testing under various temperatures showed that Fe₂O₃/SPG₂₀–SO₃H achieved highest degradation efficiency at 70 °C, maintaining over 92.14 % up 120 minutes contact time. Lower (5 °C 15 °C) led reduced less stable activity. These indicate both sulfonation iron oxide impregnation, combined optimal operating temperature, significantly enhance silica systems, offering cost-effective environmentally friendly solution dye-contaminated wastewater treatment. Copyright © 2025 by Authors, Published BCREC Publishing Group. is an open access article CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Язык: Английский

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