Sonocatalytic performance of eggshells loaded with transition metal ions for decolorization of crystal violet dye
| Autor: | Kalaivani Dayanidhi, S. E. Noorjahan |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Diffuse reflectance infrared fourier transform Scanning electron microscope Mechanical Engineering Metal ions in aqueous solution 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry X-ray photoelectron spectroscopy Mechanics of Materials General Materials Science Crystal violet Fourier transform infrared spectroscopy 0210 nano-technology Spectroscopy Nuclear chemistry Triarylmethane dye |
| Zdroj: | Materials Research Bulletin. 138:111201 |
| ISSN: | 0025-5408 |
| DOI: | 10.1016/j.materresbull.2020.111201 |
| Popis: | In this study, divalent transition metal ions namely Fe(II), Co(II), Ni(II) and Cu(II) were loaded on the eggshells by a simple impregnation method and characterized by UV–vis diffuse reflectance spectroscopy (DRS), Fourier transform infrared spectroscopy (FT-IR), Scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDX), Brunauer–Emmett–Teller (BET) surface area analyzer, X-ray photoelectron spectrometer (XPS), and X-ray diffraction (XRD) techniques. The metal ions loaded eggshells were investigated for the sonocatalytic degradation of a triarylmethane dye, crystal violet (CV) under ultrasonic irradiation. The experimental conditions like sonocatalyst dosage, dye concentration and ultrasound irradiation time were optimized based on decolorization of CV. The results evidenced an excellent sonodegradation performance of Fe(II) loaded eggshell towards CV, within 30 min, when compared to other metal ions loaded eggshell. The sonodegradation mechanism has been proposed and the recycle capacity upto 5 cycles was investigated with only ∼8 % decrease in degradation efficiency. |
| Databáze: | OpenAIRE |
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