| Autor: |
Mansoor, Shah, Nabi, Gul Asimullah Khan, Hussain, Sajjad, Javid, Zainab, Jan, F. Akbar |
| Zdroj: |
Chemistry Africa; 20230101, Issue: Preprints p1-9, 9p |
| Abstrakt: |
In the present study manganese oxide (MnO2) nanoparticles (NPs) were produced using chemical co-precipitation method. The size of the crystals was determined using X-Ray diffraction (XRD) analysis. Scanning electron microscopy (SEM) was used for the identification of morphology, Energy dispersive X-ray analysis (EDX) for elemental composition, Fourier transform infrared (FT-IR) spectroscopy for functional groups identification and for thermal stability testing, thermal gravimetric analysis (TGA) was used. The XRD data showed that the MnO2nanoparticles are crystalline and have average crystallite size of 26 nm. The created nanoparticles were used as a photo-catalyst for Malachite Green (MG) decolonization under UV-light irradiation. The kinetics analysis revealed that second-order kinetics best described the dye removal using MnO2nanoparticles as catalyst. The impacts of several reaction parameters, such as catalyst dose, illumination period, initial dye concentration, pH, and temperature, were also investigated. It was found that 94.93% dye degradation was achieved at 50 min time duration. Increasing temperature upto 70 °C and catalyst dosage up to 0.05 g and pH the rate of deterioration increased. |
| Databáze: |
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