Comparative study on photocatalytic efficiency of Mg doped CuFeO2 versus TiO2 doped CuFeO2 delafossite based on their application for the removal of tartrazine yellow dye
The present work highlights the comparative analysis between Mg doped CuFeO2 (named as Mg-CFO) and TiO2/CuFeO2 composite (named as TiO2-CFO) for the photodegradation of TZ dye in aqueous solution. Physicochemical tests like XRD, FTIR, FESEM, EDX was done for both the composites. The pHpzc values of...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-04-01
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| Series: | Chemistry of Inorganic Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2949746925000035 |
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| Summary: | The present work highlights the comparative analysis between Mg doped CuFeO2 (named as Mg-CFO) and TiO2/CuFeO2 composite (named as TiO2-CFO) for the photodegradation of TZ dye in aqueous solution. Physicochemical tests like XRD, FTIR, FESEM, EDX was done for both the composites. The pHpzc values of Mg-CFO and TiO2-CFO were determined to be 9.34 and 9.0 respectively for which both photocatalysts gave good removal efficiency of anionic TZ in an acidic or lower pH region. Mg-CFO degraded 87 % of 20 mg L−1 of TZ in 100 mL of solution at 50 mg dosage, under pH∼2, at 130 rpm and 30 °C temperature showing a rate constant of 0.00602 min−1 and TiO2-CFO degraded 91 % of TZ dye under the same conditions showing a rate constant of 0.00637 min−1. The quenching test showed that both photocatalysts had generated O2°- radicals as the primary species and OH° as the secondary species. In general, TiO2-CFO composite was proved to be a comparatively better photocatalyst than Mg-CFO sample. |
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| ISSN: | 2949-7469 |