Hydrothermal synthesized α-Fe2O3/Mn2O3 nanocomposite for efficient photodegradation of methylene blue under visible light | ||
| Journal of Ultrafine Grained and Nanostructured Materials | ||
| دوره 58، شماره 1، شهریور 2025، صفحه 120-131 اصل مقاله (1.5 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/jufgnsm.2025.01.12 | ||
| نویسنده | ||
| Aliakbar Dehno Khalaji* | ||
| Department of Chemistry, Faculty of Science, Golestan University, Gorgan, Iran | ||
| چکیده | ||
| Treating wastewater using transition metal oxide nanocomposites as efficient photocatalysts has received more attention in recent years. In this work, to develop a new efficient photocatalyst based on metal oxides, the α-Fe2O3/Mn2O3 heterojunction nanocomposite was prepared via a facile one-pot hydrothermal precipitate technique and characterized by FT-IR, XRD, UV-Vis, PL, SEM and TEM techniques. The results confirm the successful formation of α-Fe2O3/Mn2O3 nanocomposite. The as-prepared α-Fe2O3/Mn2O3 was assessed for the photodegradation of methylene blue (MB) as a model wastewater under visible light irradiation. The photocatalytic activity for degradation of MB was calculated to be 96.7% within 90 min. The kinetics of experimental data were studied using the Langmuir mechanism, resulting in a rate constant of 0.02521 min-1. The effect of different scavengers on photodegradation efficiency was investigated and the results predicted that the O2-° radicals are responsible for the degradation of MB dye molecules. The reusability after six cycles was studied without significant activity change, confirming the photocatalytic efficiency and stability of α-Fe2O3/Mn2O3 nanocomposite. Therefore, the as-prepared α-Fe2O3/Mn2O3 is a promising photocatalyst in the photodegradation of other organic dyes. | ||
| کلیدواژهها | ||
| Heterojunction؛ α-Fe2O3/Mn2O3 nanocomposite؛ Methylene blue؛ Photodegradation | ||
| مراجع | ||
|
| ||
|
آمار تعداد مشاهده مقاله: 907 تعداد دریافت فایل اصل مقاله: 469 |
||