Structural, dielectric, and antimicrobial evaluation of PMMA/CeO2 for optoelectronic devices
Abstract In the current report, we have successfully synthesized nanocomposites of PMMA incorporating different doping of CeO2 through a chemical approach. XRD results reflects decent matching for CeO2 nanoparticles with 29 nm crystallite size. FTIR spectroscopy demonstrates the characteristic funct...
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Nature Portfolio
2024-01-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-024-52840-8 |
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| author | Ahmed M. Bakr Abdelfattah Darwish A. A. Azab Mohamed E. El Awady Ahmed A. Hamed Amir Elzwawy |
| author_facet | Ahmed M. Bakr Abdelfattah Darwish A. A. Azab Mohamed E. El Awady Ahmed A. Hamed Amir Elzwawy |
| author_sort | Ahmed M. Bakr |
| collection | DOAJ |
| description | Abstract In the current report, we have successfully synthesized nanocomposites of PMMA incorporating different doping of CeO2 through a chemical approach. XRD results reflects decent matching for CeO2 nanoparticles with 29 nm crystallite size. FTIR spectroscopy demonstrates the characteristic functional groups validating the successful formation of the composite. The optical study of PMMA and the nanocomposites has proven that the optical properties such as band gap, refractive index, optical permittivity, and loss tangent factor are affected by adding CeO2 to the PMMA matrix.The peak residing around 420 nm by UV measurements is allocated to occurring electrons photoexcitation from the valence to conduction band inherent in CeO2. The dielectric measurements were achieved using broadband dielectric spectroscopy upon a wide span of frequencies (10–1–107 Hz) and within temperatures from − 10 to 80 °C with a step of 10 °C. The permittivity decreases by adding CeO2 and the dielectric parameters are thermally enhanced, however, the temperature influence is based on CeO2 content, the higher the CeO2 amount, the higher the influence of temperature. The results of the nanocomposites revealed antibacterial activity counter to gram-positive bacteria strain (S. aureus, and B. subtilis), and gram-negative bacteria (E. coli, and K. pneumoniae), yeast (C. albicans, as well as fungi (A. niger). Inherently, the change in CeO2 concentration from 0.01 to 0.1 wt% delivers maximum influence against gram-negative bacteria. These PMMA CeO2-doped composites are beneficial for optoelectronic areas and devices. |
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| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-07T15:10:36Z |
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| series | Scientific Reports |
| spelling | doaj.art-e1c30b76c3524d77a7075698a857909c2024-03-05T18:43:20ZengNature PortfolioScientific Reports2045-23222024-01-0114111110.1038/s41598-024-52840-8Structural, dielectric, and antimicrobial evaluation of PMMA/CeO2 for optoelectronic devicesAhmed M. Bakr0Abdelfattah Darwish1A. A. Azab2Mohamed E. El Awady3Ahmed A. Hamed4Amir Elzwawy5Spectroscopy Department, Physics Research Institute, National Research Centre (NRC)Microwave Physics and Dielectrics Department, Physics Research Institute, National Research Centre (NRC)Solid State Physics Department, Physics Research Institute, National Research Centre (NRC)Microbial Biotechnology Department, National Research Centre (NRC)Microbial Chemistry Department, National Research Centre (NRC)Ceramics Department, Advanced Materials Technology and Mineral Resources Research Institute, National Research Centre (NRC)Abstract In the current report, we have successfully synthesized nanocomposites of PMMA incorporating different doping of CeO2 through a chemical approach. XRD results reflects decent matching for CeO2 nanoparticles with 29 nm crystallite size. FTIR spectroscopy demonstrates the characteristic functional groups validating the successful formation of the composite. The optical study of PMMA and the nanocomposites has proven that the optical properties such as band gap, refractive index, optical permittivity, and loss tangent factor are affected by adding CeO2 to the PMMA matrix.The peak residing around 420 nm by UV measurements is allocated to occurring electrons photoexcitation from the valence to conduction band inherent in CeO2. The dielectric measurements were achieved using broadband dielectric spectroscopy upon a wide span of frequencies (10–1–107 Hz) and within temperatures from − 10 to 80 °C with a step of 10 °C. The permittivity decreases by adding CeO2 and the dielectric parameters are thermally enhanced, however, the temperature influence is based on CeO2 content, the higher the CeO2 amount, the higher the influence of temperature. The results of the nanocomposites revealed antibacterial activity counter to gram-positive bacteria strain (S. aureus, and B. subtilis), and gram-negative bacteria (E. coli, and K. pneumoniae), yeast (C. albicans, as well as fungi (A. niger). Inherently, the change in CeO2 concentration from 0.01 to 0.1 wt% delivers maximum influence against gram-negative bacteria. These PMMA CeO2-doped composites are beneficial for optoelectronic areas and devices.https://doi.org/10.1038/s41598-024-52840-8 |
| spellingShingle | Ahmed M. Bakr Abdelfattah Darwish A. A. Azab Mohamed E. El Awady Ahmed A. Hamed Amir Elzwawy Structural, dielectric, and antimicrobial evaluation of PMMA/CeO2 for optoelectronic devices Scientific Reports |
| title | Structural, dielectric, and antimicrobial evaluation of PMMA/CeO2 for optoelectronic devices |
| title_full | Structural, dielectric, and antimicrobial evaluation of PMMA/CeO2 for optoelectronic devices |
| title_fullStr | Structural, dielectric, and antimicrobial evaluation of PMMA/CeO2 for optoelectronic devices |
| title_full_unstemmed | Structural, dielectric, and antimicrobial evaluation of PMMA/CeO2 for optoelectronic devices |
| title_short | Structural, dielectric, and antimicrobial evaluation of PMMA/CeO2 for optoelectronic devices |
| title_sort | structural dielectric and antimicrobial evaluation of pmma ceo2 for optoelectronic devices |
| url | https://doi.org/10.1038/s41598-024-52840-8 |
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