Rapid preparation and antimicrobial activity of polyurea coatings with RE-doped nano-ZnO
The recent COVID-19 virus has led to a rising interest in antimicrobial and antiviral coatings for frequently touched surfaces in public and healthcare settings. Such coatings may have the ability to kill a variety of microorganisms and bio-structures and reduce the risk of virus transmission. This...
| मुख्य लेखकों: | , , , , |
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| अन्य लेखक: | |
| स्वरूप: | Journal Article |
| भाषा: | English |
| प्रकाशित: |
2021
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| विषय: | |
| ऑनलाइन पहुंच: | https://hdl.handle.net/10356/153563 |
| _version_ | 1826119388373188608 |
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| author | Li, Yuanzhe Liu, Yang Yao, Bingqing Narasimalu, Srikanth Dong, Zhili |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Li, Yuanzhe Liu, Yang Yao, Bingqing Narasimalu, Srikanth Dong, Zhili |
| author_sort | Li, Yuanzhe |
| collection | NTU |
| description | The recent COVID-19 virus has led to a rising interest in antimicrobial and antiviral coatings for frequently touched surfaces in public and healthcare settings. Such coatings may have the ability to kill a variety of microorganisms and bio-structures and reduce the risk of virus transmission. This paper proposes an extremely rapid method to introduce rare-earth doping nano-ZnO in polyamines for the preparation of the anti-microbial polyurea coatings. The nano-ZnO is prepared by wet chemical method, and the RE-doped nano-ZnO was obtained by mixing nano ZnO and RE-dopants with an appropriate amount of nitric acid. This rapidly fabricated polyurea coating can effectively reduce bacteria from enriching on the surface. Comparing with pure nano-ZnO group, all the polyurea coatings with four different rare-earth elements (La, Ce, Pr and Gd) doped nano-ZnO. The La-doped nano-ZnO formula group indicates the highest bactericidal rate over 85% to Escherichia coli (E. coli) and Pseudomonas aeruginosa (Pseudomonas). Followed by Ce/ZnO, the bactericidal rate may still remain as high as 83% at room temperature after 25-min UV-exposure. It is believed that the RE-doping process may greatly improve the photocatalytic response to UV light as well as environmental temperature due to its thermal catalytic enhancement. Through the surface characterizations and bioassays, the coatings have a durably high bactericidal rate even after repeated usage. As polyurea coating itself has high mechanical strength and adhesive force with most substrate materials without peel-off found, this rapid preparation method will also provide good prospects in practical applications. |
| first_indexed | 2024-10-01T04:59:30Z |
| format | Journal Article |
| id | ntu-10356/153563 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:59:30Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1535632021-12-11T20:11:30Z Rapid preparation and antimicrobial activity of polyurea coatings with RE-doped nano-ZnO Li, Yuanzhe Liu, Yang Yao, Bingqing Narasimalu, Srikanth Dong, Zhili School of Materials Science and Engineering Energy Research Institute @ NTU (ERI@N) Engineering::Materials Rare-Earth Resistance The recent COVID-19 virus has led to a rising interest in antimicrobial and antiviral coatings for frequently touched surfaces in public and healthcare settings. Such coatings may have the ability to kill a variety of microorganisms and bio-structures and reduce the risk of virus transmission. This paper proposes an extremely rapid method to introduce rare-earth doping nano-ZnO in polyamines for the preparation of the anti-microbial polyurea coatings. The nano-ZnO is prepared by wet chemical method, and the RE-doped nano-ZnO was obtained by mixing nano ZnO and RE-dopants with an appropriate amount of nitric acid. This rapidly fabricated polyurea coating can effectively reduce bacteria from enriching on the surface. Comparing with pure nano-ZnO group, all the polyurea coatings with four different rare-earth elements (La, Ce, Pr and Gd) doped nano-ZnO. The La-doped nano-ZnO formula group indicates the highest bactericidal rate over 85% to Escherichia coli (E. coli) and Pseudomonas aeruginosa (Pseudomonas). Followed by Ce/ZnO, the bactericidal rate may still remain as high as 83% at room temperature after 25-min UV-exposure. It is believed that the RE-doping process may greatly improve the photocatalytic response to UV light as well as environmental temperature due to its thermal catalytic enhancement. Through the surface characterizations and bioassays, the coatings have a durably high bactericidal rate even after repeated usage. As polyurea coating itself has high mechanical strength and adhesive force with most substrate materials without peel-off found, this rapid preparation method will also provide good prospects in practical applications. Ministry of Education (MOE) Published version This research was funded by MOE Academic Research Fund (AcRF) Tier 1 Project ‘Nano‐structured Titania with tunable hydrophilic/hydrophobic behaviour and photocatalytic function for marine structure application’, Grant Call (Call 1/2018) _MSE (EP Code EP5P, Project ID 122018‐T1‐001‐077), Ministry of Education (MOE), Singapore. 2021-12-08T09:09:07Z 2021-12-08T09:09:07Z 2021 Journal Article Li, Y., Liu, Y., Yao, B., Narasimalu, S. & Dong, Z. (2021). Rapid preparation and antimicrobial activity of polyurea coatings with RE-doped nano-ZnO. Microbial Biotechnology, 0(0), 1-13. https://dx.doi.org/10.1111/1751-7915.13891 1751-7915 https://hdl.handle.net/10356/153563 10.1111/1751-7915.13891 34676986 2-s2.0-85117533526 0 0 1 13 en ID122018-T1-001-077 Microbial Biotechnology ©The Authors. Microbial Biotechnology published by John Wiley & Sons Ltd and Society for Applied Microbiology. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution andreproduction in any medium, provided the original work is properly cited. application/pdf |
| spellingShingle | Engineering::Materials Rare-Earth Resistance Li, Yuanzhe Liu, Yang Yao, Bingqing Narasimalu, Srikanth Dong, Zhili Rapid preparation and antimicrobial activity of polyurea coatings with RE-doped nano-ZnO |
| title | Rapid preparation and antimicrobial activity of polyurea coatings with RE-doped nano-ZnO |
| title_full | Rapid preparation and antimicrobial activity of polyurea coatings with RE-doped nano-ZnO |
| title_fullStr | Rapid preparation and antimicrobial activity of polyurea coatings with RE-doped nano-ZnO |
| title_full_unstemmed | Rapid preparation and antimicrobial activity of polyurea coatings with RE-doped nano-ZnO |
| title_short | Rapid preparation and antimicrobial activity of polyurea coatings with RE-doped nano-ZnO |
| title_sort | rapid preparation and antimicrobial activity of polyurea coatings with re doped nano zno |
| topic | Engineering::Materials Rare-Earth Resistance |
| url | https://hdl.handle.net/10356/153563 |
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