Doping of iron transition metal onto cerium oxide lattice for enhanced photocatalytic degradation of acid violet 7 azo dye under solar irradiation
| dc.contributor.author | Mishra, Ajay Kumar | |
| dc.contributor.author | Malatjie, Kgolofelo | |
| dc.contributor.author | Ndlovu, Lloyd | |
| dc.date.accessioned | 2025-05-05T13:38:01Z | |
| dc.date.available | 2025-05-05T13:38:01Z | |
| dc.date.issued | 2025 | |
| dc.description.abstract | Dye-contaminated water possess a severe environmental problem due to its adverse effects on ecosystems, human health, and water resources. In this study, cerium oxide (CeO2) was successfully produced and doped with different ratios of iron (5,10 and 15 mol%) via a facile co-precipitation method for use in photocatalytic degradation of acid violet 7 (AV7) from an aqueous solution. The physicochemical properties of the nanophotocatalysts were studied using transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), Ultraviolet–Visible spectrophotometer (UV–Vis), Raman spectroscopy, photoluminescence spectroscopy (PL), X-ray photoelectron spectroscopy (XPS), X-ray diffractometer (XRD), and Brunauer-Emmett-Teller (BET). SEM-EDS confirmed the presence of Fe, O and Ce elements in the photocatalysts. The 5 mol% Fe-dopped CeO2 possess high photocatalytic activity with the removal efficiency of approximately 98 % of AV7 dye when compared to pristine CeO2 (38 %), 10 % Fe-doped CeO2 (85 %) and 15 % Fe-doped (86 %). The higher photodegradation of 5 mol% Fe-doped CeO2 was attributed to suppressed recombination of photogenerated charge carriers as displayed by PL, as well as the high surface area observed from BET analysis. In addition, the electrochemical characterization confirmed high migration of photogenerated electron-hole pairs for 5 mol% Fe-CeO2/FTO which substantiates the enhanced photocatalytic degradation of AV7. | |
| dc.identifier.citation | Malatjie, K.I., Ndlovu, L.N., Moutloali, R.M., Mishra, A.K., Mishra, S.B. and Nxumalo, E.N., 2025. Doping of iron transition metal onto cerium oxide lattice for enhanced photocatalytic degradation of acid violet 7 azo dye under solar irradiation. Inorganic Chemistry Communications, 177, p.114305. | |
| dc.identifier.uri | https://doi.org/10.1016/j.inoche.2025.114305 | |
| dc.identifier.uri | https://hdl.handle.net/10566/20354 | |
| dc.language.iso | en | |
| dc.publisher | Elsevier B.V. | |
| dc.subject | Acid violet 7 | |
| dc.subject | Cerium oxide | |
| dc.subject | Iron-doping | |
| dc.subject | Leaching | |
| dc.subject | Nanophotocatalysts | |
| dc.title | Doping of iron transition metal onto cerium oxide lattice for enhanced photocatalytic degradation of acid violet 7 azo dye under solar irradiation | |
| dc.type | Article |