Journal of Nanoscience and Nanoengineering
Articles Information
Journal of Nanoscience and Nanoengineering, Vol.7, No.1, Mar. 2021, Pub. Date: Jul. 26, 2021
Photocatalytic Performance of Ca Doped ZnO Nanostructure Synthesized Via UV Incubator Shaker
Pages: 1-9 Views: 1203 Downloads: 406
Authors
[01] Esraa Abdala, Department of Chemical Engineering, University of Khartoum, Khartoum, Sudan.
[02] Omer Nur, Department of Science and Technology, Campus Norrköping, Linkoping University, Norrköping, Sweden.
[03] Mustafa Abbas Mustafa, Materials and Nanotechnology Research Centre, University of Khartoum, Khartoum, Sudan.
Abstract
The ZnO nanostructures were synthesized and doped with different concentrations of Ca (0.01, 0.03, 0.05 M) via the co-precipitation method using an incubator shaker with UV light at a temperature of 45°C and at 200 rpm. The precursors used were Zn(NO3)2·6H2O, Ca(NO3)2·4H2O and NaOH. The morphological and structural properties were investigated by using different characterization techniques including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), energy dispersive spectra (EDS) and UV-visible spectroscopy. The average crystallite sizes of the samples were calculated by using the Debye-Scherrer's formula and were found to be in the nanorange. SEM images revealed that using UV light leads to the formation of high crystalline nanorods while non exposed UV light samples formed nanoparticles with less crystallinity. EDS shows that the synthetic route followed produced highly pure ZnO nanostructures. Finally the prepared samples were used as a photocatalyst to remove the Methylene blue (MB) dye. Observations showed that samples prepared without UV light have a smaller band gap and better photocatalytic degradation of Methylene blue compared to the UV light samples. The degradation of the MB dye achieved was 86.5 % and 96.93% for CZOUV and CZONUV respectively following 10 min of treatment.
Keywords
Calcium Doping, MB Degradation, UV Light, Co-precipitation
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