Structural, optical, physio-chemical properties and photodegradation study of methylene blue using pure and iron-doped anatase titania nanoparticles under solar-light irradiation
| Autor: | Amar Kundu, Aparna Mondal |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
inorganic chemicals
010302 applied physics Anatase Materials science technology industry and agriculture chemistry.chemical_element Nanoparticle Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Ferrous symbols.namesake chemistry Specific surface area 0103 physical sciences symbols Electrical and Electronic Engineering Raman spectroscopy Photodegradation High-resolution transmission electron microscopy Titanium Nuclear chemistry |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 30:3244-3256 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-018-00596-z |
| Popis: | Pure and iron-doped titania nanoparticles have been successfully synthesized using inorganic salt titanium oxysulfate and ferrous sulfate. The nanoparticles are characterized by XRD, Raman, BET, UV/Vis/DRS, PL, HRTEM/EDAX, and XPS techniques. Formation of pure anatase framework is confirmed from the XRD and Raman analysis. The study shows decrease in crystallite size with the increase in iron concentration. N2 adsorption–desorption isotherms reveals an increase in specific surface area with iron concentration. Elemental analysis of selective nanoparticles confirms the presence of iron. Moreover, HRTEM micrographs show that, the particles are in nano-meter range. Red shifts are found in the absorption edge due to iron doping in titania nanoparticles. Presence of Fe3+ in the anatase lattice framework is observed from the XPS analysis. Pure titania nanoparticles have showed better performance for photocatalytic degradation of methylene blue. Addition of H2O2 with iron-doped titania nanoparticles results in improved rate of photodegradation compared to pure titania nanoparticles (about 16-fold using 10 wt% iron doped titania and only fivefold using pure titania). |
| Databáze: | OpenAIRE |
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