Journal
MATERIALS LETTERS
Volume 304, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2021.130658
Keywords
Nanoparticles; Crystal Structural; Rietveld method; Optical materials and properties; Semiconductors
Funding
- Faculty of Mechanical Engineering
- Faculty of Process Engineering
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The crystal structural and optical properties of bismuth-based zinc sillenite Bi12ZnO20 (BZO) were studied for environmental applications. BZO nanoparticles were synthesized using the co-precipitation technique and characterized through various methods. BZO showed promising photocatalytic activity with a narrow optical bandgap, and demonstrated high efficiency in degrading pollutants, outperforming previous studies in the literature.
The purpose of this work is to study the crystal structural and optical properties of the bismuth-based zinc sillenite Bi12ZnO20 (BZO) in order to be used for environmental application. BZO nanoparticles were synthesized by the co-precipitation technique. The obtained catalyst was characterized by different techniques. Starting with XRD, the structure was refined from XRD data using the Rietveld method and then illustrated for the first time. A space group of I23 was identified for BZO with a cell parameter a = 10.214 angstrom. The morphology was visualized by SEM. The optical proprieties have been evaluated by DRS, an optical bandgap of 2.8 eV was found. This narrow bandgap allows this sillenite to be a promising photocatalyst for photocatalytic applications. For that, we tested it for the removal of Cefuroxime antibiotic, this catalyst has shown very interesting activity in degrading this pollutant around 80% in just 4 h. This rate is the highest compared to the literature.
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