Impregnation of porous TiO2/ZnO into MCM-41 synthesized from coal fly ash for enhanced photocatalytic activity of TiO2/ZnO@MCM-41 composites in methylene blue removal
MCM-41 was synthesized from coal fly ash and used as a support for TiO₂/ZnO nanoparticles in methylene blue removal. The composite was prepared using alkali fusion and hydrothermal methods, yielding MCM-41 with a surface area of 1013.73 m2/g, which decreased to 457.81 m2/g upon TiO2/ZnO impregnation...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-06-01
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| Series: | Case Studies in Chemical and Environmental Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666016425000593 |
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| Summary: | MCM-41 was synthesized from coal fly ash and used as a support for TiO₂/ZnO nanoparticles in methylene blue removal. The composite was prepared using alkali fusion and hydrothermal methods, yielding MCM-41 with a surface area of 1013.73 m2/g, which decreased to 457.81 m2/g upon TiO2/ZnO impregnation. Characterization confirmed the hexagonal mesoporous structure, uniform dispersion of TiO2/ZnO, and enhanced light absorption. Ultraviolet–Visible Diffuse Reflectance Spectroscopy (UV–Vis DRS) results revealed a band gap reduction from 3.22 eV (TZ) to 2.77 eV (TZM), improving photocatalytic activity under UV and visible light irradiation. The 35TiO2/65ZnO@MCM-41 composite achieved 99.21 % MB degradation in 140 min. |
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| ISSN: | 2666-0164 |