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Iranian Journal of Materials Science and Engineering، جلد ۲۲، شماره ۱، صفحات ۳۷-۵۰
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Investigation of the Effect of Calcination Time on the Antibacterial, Antifungal and Anticancer Activities of TiO2/ZnO Nanocomposites
چکیده انگلیسی مقاله Nanomaterials have significantly transformed multiple scientific and technological fields due to their exceptional properties, which result from their quantum confinement effects and high surface-to-volume ratios. Among these materials, zinc oxide (ZnO) and titanium dioxide (TiO2) nanoparticles have attracted considerable interest because of their diverse applications.
In this study, TiO2-ZnO nanocomposites were synthesized using varying calcination times of 1, 1.5, 2, 2.5, and 3 hours. Characterization of fabricated samples through X-ray diffraction (XRD)‌ spectroscopy, Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM), and energy-dispersive X-ray spectroscopy (EDXS) confirmed the successful fabrication of the nanocomposites. In this regard, XRD analysis revealed anatase TiO2 and hexagonal wurtzite ZnO phases. Raman spectroscopy also supported these findings, identifying characteristic peaks of both TiO2 and ZnO.
The calcination time had a minimal effect on the crystal structures and also morphology of the nanocomposites, which gave rise to its negligible impact on optical properties and biological activities of the samples. Optical properties assessed by means of UV-visible and photoluminescence (PL) spectroscopy showed consistent band gap absorption and emission profiles across all samples, among which the nanocomposite calcined for 1 hour exhibited the best optical properties.

The sample prepared at 1 hour not only showed the most favorable optical properties, but also demonstrated significant antibacterial, antifungal, and cytotoxic activities, which make it suitable for various applications. In this regard, a reduction of more than 99.9% occurred in the number of Escherichia coli and Staphylococcus aureus bacteria and also Candida albicans fungus by using TiO2-ZnO nanocomposite. Besides, addition of 500 µg/ml of nanocomposite decreased the cell viability to 34.47%, which signifies its high cytotoxicity activity.

 
کلیدواژه‌های انگلیسی مقاله Keywords, TiO2-ZnO nanocomposite,Calcination time,Zinc oxide,Titanium dioxide,Antibacterial activities
نویسندگان مقاله | Adil Kadum Shakir
1Faculty of Physics, University of Isfahan, Isfahan 8174673441, Iran


| Ebrahim Ghanbari-Adivi
1Faculty of Physics, University of Isfahan, Isfahan 8174673441, Iran


| Aref S. Baron Baron
2Faculty of Physics, University of Kufa, Kufa, Iraq


| Morteza Soltani
1Faculty of Physics, University of Isfahan, Isfahan 8174673441, Iran
نشانی اینترنتی http://ijmse.iust.ac.ir/browse.php?a_code=A-10-5538-1&slc_lang=en&sid=1
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کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده Synthesis and preparation of materials to meet the requirements of AM techniques
نوع مقاله منتشر شده Research Paper
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