In-situ synthesis of CuO nanoparticles in P(NIPAM-co-AAA) microgel, structural characterization, catalytic and biological applications
The production of new multi-responsive poly(N-isopropylacrylamide-allyl acetic acid) [P(NIPAM-AAA)] copolymer microgel by free radical emulsion polymerization is reported. Inside this copolymer microgel CuO nanoparticles were generated by in situ reduction of copper nitrate followed by the air oxida...
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| Format: | Article |
| Language: | English |
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Elsevier
2018-09-01
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| Series: | Arabian Journal of Chemistry |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535217302617 |
| _version_ | 1811282859104665600 |
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| author | Jahanzeb Khan Muhammad Siddiq Bilal Akram Muhammad Aqeel Ashraf |
| author_facet | Jahanzeb Khan Muhammad Siddiq Bilal Akram Muhammad Aqeel Ashraf |
| author_sort | Jahanzeb Khan |
| collection | DOAJ |
| description | The production of new multi-responsive poly(N-isopropylacrylamide-allyl acetic acid) [P(NIPAM-AAA)] copolymer microgel by free radical emulsion polymerization is reported. Inside this copolymer microgel CuO nanoparticles were generated by in situ reduction of copper nitrate followed by the air oxidation process, their fabrication is confirmed by powdered X-ray diffraction analysis and the average size of CuO NPs was found to be 24 nm having monoclinic shapes. By using dynamic laser light scattering the swelling & de-swelling behaviour of the pure microgel was examined at different temperature and pH values. The copolymer microgel becomes unstable at low pH as well as at high temperature values respectively. UV–visible spectra show a red shift in surface plasmon resonance λSPR of CuO nanoparticles. The catalytic property of hybrid microgel was inspected by observing the reduction of 4-nitrophenol into 4-aminophenol in the presence of excess NaBH4 with various concentrations of catalyst at room temperature. The hybrid microgels also have good anti-bacterial activity against both Gram-positive (C. albicans) and Gram-negative (E. coli) bacteria. Keywords: Polymerization, NIPAM-AAA microgel, CuO NPs, Catalytic activity |
| first_indexed | 2024-04-13T02:00:06Z |
| format | Article |
| id | doaj.art-13f501706eb449f3b25e32292792a758 |
| institution | Directory Open Access Journal |
| issn | 1878-5352 |
| language | English |
| last_indexed | 2024-04-13T02:00:06Z |
| publishDate | 2018-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Arabian Journal of Chemistry |
| spelling | doaj.art-13f501706eb449f3b25e32292792a7582022-12-22T03:07:39ZengElsevierArabian Journal of Chemistry1878-53522018-09-01116897909In-situ synthesis of CuO nanoparticles in P(NIPAM-co-AAA) microgel, structural characterization, catalytic and biological applicationsJahanzeb Khan0Muhammad Siddiq1Bilal Akram2Muhammad Aqeel Ashraf3Department of Chemistry, Tsinghua University, Beijing 100084, China; Department of Chemistry, Quaid-I-Azam University, Islamabad 45320, Pakistan; Department of Chemistry, University of Azad Jammu & Kashmir, Muzaffarabad 13100, PakistanDepartment of Chemistry, Quaid-I-Azam University, Islamabad 45320, Pakistan; Corresponding authors at: Department of Environmental Science & Engineering, China University of Geosciences, Wuhan, China (M.A. Ashraf).Department of Chemistry, Tsinghua University, Beijing 100084, ChinaDepartment of Environmental Science & Engineering, China University of Geosciences, Wuhan, China; International Water, Air & Soil Conservation Society (INWASCON), 59200 Kuala Lumpur, Malaysia; Corresponding authors at: Department of Environmental Science & Engineering, China University of Geosciences, Wuhan, China (M.A. Ashraf).The production of new multi-responsive poly(N-isopropylacrylamide-allyl acetic acid) [P(NIPAM-AAA)] copolymer microgel by free radical emulsion polymerization is reported. Inside this copolymer microgel CuO nanoparticles were generated by in situ reduction of copper nitrate followed by the air oxidation process, their fabrication is confirmed by powdered X-ray diffraction analysis and the average size of CuO NPs was found to be 24 nm having monoclinic shapes. By using dynamic laser light scattering the swelling & de-swelling behaviour of the pure microgel was examined at different temperature and pH values. The copolymer microgel becomes unstable at low pH as well as at high temperature values respectively. UV–visible spectra show a red shift in surface plasmon resonance λSPR of CuO nanoparticles. The catalytic property of hybrid microgel was inspected by observing the reduction of 4-nitrophenol into 4-aminophenol in the presence of excess NaBH4 with various concentrations of catalyst at room temperature. The hybrid microgels also have good anti-bacterial activity against both Gram-positive (C. albicans) and Gram-negative (E. coli) bacteria. Keywords: Polymerization, NIPAM-AAA microgel, CuO NPs, Catalytic activityhttp://www.sciencedirect.com/science/article/pii/S1878535217302617 |
| spellingShingle | Jahanzeb Khan Muhammad Siddiq Bilal Akram Muhammad Aqeel Ashraf In-situ synthesis of CuO nanoparticles in P(NIPAM-co-AAA) microgel, structural characterization, catalytic and biological applications Arabian Journal of Chemistry |
| title | In-situ synthesis of CuO nanoparticles in P(NIPAM-co-AAA) microgel, structural characterization, catalytic and biological applications |
| title_full | In-situ synthesis of CuO nanoparticles in P(NIPAM-co-AAA) microgel, structural characterization, catalytic and biological applications |
| title_fullStr | In-situ synthesis of CuO nanoparticles in P(NIPAM-co-AAA) microgel, structural characterization, catalytic and biological applications |
| title_full_unstemmed | In-situ synthesis of CuO nanoparticles in P(NIPAM-co-AAA) microgel, structural characterization, catalytic and biological applications |
| title_short | In-situ synthesis of CuO nanoparticles in P(NIPAM-co-AAA) microgel, structural characterization, catalytic and biological applications |
| title_sort | in situ synthesis of cuo nanoparticles in p nipam co aaa microgel structural characterization catalytic and biological applications |
| url | http://www.sciencedirect.com/science/article/pii/S1878535217302617 |
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