Enhancing the magnetic and antibacterial properties of ZnO nanopowders through Mn+Co doping |
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| Affiliation: | 1. State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;1. Facultad de Ciencias Químicas-UASLP, 5 Av. Nava, 78210 San Luis Potosí, México;2. Instituto de Metalurgia-UASLP, 550 Sierra Leona, CP 78216 San Luis Potosí, México;1. Faculty of Applied Physics and Mathematics, Department of Solid State Physics, Gdansk University of Technology, Narutowicza 11/12 80-233 Gdansk, Poland;2. Faculty of Electronics, Telecommunications and Informatics, Department of Biomedical Engineering, Gdansk University of Technology, Narutowicza 11/12 80-233 Gdansk, Poland;1. Institute of Solid State Chemistry and Mechanochemistry SB RAS, 18 Kutateladze street, Novosibirsk 630128, Russia;2. Novosibirsk State University, 2 Pirogova street, Novosibirsk 630090, Russia;3. SRC VB “VECTOR”, Koltsovo, Novosibirsk region 630559, Russia;4. Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Acad. Lavrentiev Ave., Novosibirsk 630090, Russia;1. Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University, Kurokami, 2-39-1, Kumamoto 860-8555, Japan;2. Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasuga Koen, Kasuga, Fukuoka 816-8580, Japan;3. National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan;4. Department of Energy and Material Sciences, Faculty of Engineering Sciences, Kyushu University, 6-1 Kasuga Koen, Kasuga, Fukuoka 816-8580, Japan;1. School of Materials Science and Engineering, State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, China;2. Department of Materials Science and Engineering, Advanced Materials Processing and Analysis Center, University of Central Florida, Orlando, FL 32816, USA |
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| Abstract: | Undoped and doubly (Mn+Co) doped ZnO nanopowders were synthesized with different doping levels of Co (1, 2, 3, 4 and 5 at%) and constant Mn doping level (10 at%) using a simple soft chemical route. XRD profiles confirmed that the synthesized material is nanocrystalline ZnO with hexagonal wurtzite structure. No peaks other than the characteristic ZnO peaks were observed in the XRD pattern confirming the absence of any secondary phase. Antibacterial activities of synthesized ZnO nanopowders were tested against Staphylococcus aureus bacteria using agar well diffusion method. It was found that the antibacterial efficiency of the doubly doped ZnO nanopowders was remarkably high when the Co doping level was 5 at%. The obtained PL, SEM and TEM results are corroborated well with the antibacterial activity. Magnetic measurements showed that undoped ZnO sample exhibits diamagnetic behavior and as the Co doping level increases, the nanopowder behaves as a ferromagnetic material. |
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| Keywords: | A. Powders: Chemical preparation C. Magnetic properties D. ZnO E. Biomedical application |
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