Effect of iron doped titanium oxide encapsulated in alginate on photocatalytic activity for the removal of dye pollutants.
RSC Adv
; 10(38): 22311-22317, 2020 Jun 10.
Article
in En
| MEDLINE
| ID: mdl-35514547
ABSTRACT
The focal point of this work is the design and comparison of two types of iron doped TiO2 prepared by a simple sol-gel method and then encapsulated in an alginate matrix. The as-prepared recyclable bio-nanocomposite photocatalysts were made of different amounts of TiO2-Fe2O3 and TiO2-Fe3O4 (1%, 2.5%, 5%, and 10%) and were developed to improve the photocatalytic efficiency of TiO2 and simultaneously to achieve an expanded visible-light response range with high visible-light absorption potential in order to degrade organic pollutants from aqueous solutions, as a potential application. As it is essential to characterize a material to better understand it, accurate characterization of the resulting bio-nanocomposites was carried out using X-ray diffraction (XRD), scanning electron microscopy coupled to energy dispersive X-ray spectroscopy (SEM-EDX), Fourier transform infrared spectroscopy (FTIR) and UV-diffuse reflectance spectroscopy (UV-DRS). In this study, the emphasis on blending the alginate and the iron doped-TiO2 photocatalyst nanoparticles results in a multicomponent particular shaped system that exhibits a porous structure, an exceptional surface area and a smaller band gap due to the presence of iron nanoparticles that could also maintain e-/hole separation for better photocatalytic activity under visible light.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
RSC Adv
Year:
2020
Document type:
Article