High surface area nitrogen-functionalized Ni nanozymes for efficient peroxidase-like catalytic activity.
Nitrogen-functionalization is an effective means of improving the catalytic performances of nanozymes. In the present work, plasma-assisted nitrogen modification of nanocolumnar Ni GLAD films was performed using an ammonia plasma, resulting in an improvement in the peroxidase-like catalytic performa...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2021-01-01
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| Series: | PLoS ONE |
| Online Access: | https://doi.org/10.1371/journal.pone.0257777 |
| _version_ | 1818742745762627584 |
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| author | Anuja Tripathi Kenneth D Harris Anastasia L Elias |
| author_facet | Anuja Tripathi Kenneth D Harris Anastasia L Elias |
| author_sort | Anuja Tripathi |
| collection | DOAJ |
| description | Nitrogen-functionalization is an effective means of improving the catalytic performances of nanozymes. In the present work, plasma-assisted nitrogen modification of nanocolumnar Ni GLAD films was performed using an ammonia plasma, resulting in an improvement in the peroxidase-like catalytic performance of the porous, nanostructured Ni films. The plasma-treated nanozymes were characterized by TEM, SEM, XRD, and XPS, revealing a nitrogen-rich surface composition. Increased surface wettability was observed after ammonia plasma treatment, and the resulting nitrogen-functionalized Ni GLAD films presented dramatically enhanced peroxidase-like catalytic activity. The optimal time for plasma treatment was determined to be 120 s; when used to catalyze the oxidation of the colorimetric substrate TMB in the presence of H2O2, Ni films subjected to 120 s of plasma treatment yielded a much higher maximum reaction velocity (3.7⊆10-8 M/s vs. 2.3⊆10-8 M/s) and lower Michaelis-Menten coefficient (0.17 mM vs. 0.23 mM) than pristine Ni films with the same morphology. Additionally, we demonstrate the application of the nanozyme in a gravity-driven, continuous catalytic reaction device. Such a controllable plasma treatment strategy may open a new door toward surface-functionalized nanozymes with improved catalytic performance and potential applications in flow-driven point-of-care devices. |
| first_indexed | 2024-12-18T02:17:24Z |
| format | Article |
| id | doaj.art-a32d13f225464770a313f64fa2b982fd |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-18T02:17:24Z |
| publishDate | 2021-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-a32d13f225464770a313f64fa2b982fd2022-12-21T21:24:21ZengPublic Library of Science (PLoS)PLoS ONE1932-62032021-01-011610e025777710.1371/journal.pone.0257777High surface area nitrogen-functionalized Ni nanozymes for efficient peroxidase-like catalytic activity.Anuja TripathiKenneth D HarrisAnastasia L EliasNitrogen-functionalization is an effective means of improving the catalytic performances of nanozymes. In the present work, plasma-assisted nitrogen modification of nanocolumnar Ni GLAD films was performed using an ammonia plasma, resulting in an improvement in the peroxidase-like catalytic performance of the porous, nanostructured Ni films. The plasma-treated nanozymes were characterized by TEM, SEM, XRD, and XPS, revealing a nitrogen-rich surface composition. Increased surface wettability was observed after ammonia plasma treatment, and the resulting nitrogen-functionalized Ni GLAD films presented dramatically enhanced peroxidase-like catalytic activity. The optimal time for plasma treatment was determined to be 120 s; when used to catalyze the oxidation of the colorimetric substrate TMB in the presence of H2O2, Ni films subjected to 120 s of plasma treatment yielded a much higher maximum reaction velocity (3.7⊆10-8 M/s vs. 2.3⊆10-8 M/s) and lower Michaelis-Menten coefficient (0.17 mM vs. 0.23 mM) than pristine Ni films with the same morphology. Additionally, we demonstrate the application of the nanozyme in a gravity-driven, continuous catalytic reaction device. Such a controllable plasma treatment strategy may open a new door toward surface-functionalized nanozymes with improved catalytic performance and potential applications in flow-driven point-of-care devices.https://doi.org/10.1371/journal.pone.0257777 |
| spellingShingle | Anuja Tripathi Kenneth D Harris Anastasia L Elias High surface area nitrogen-functionalized Ni nanozymes for efficient peroxidase-like catalytic activity. PLoS ONE |
| title | High surface area nitrogen-functionalized Ni nanozymes for efficient peroxidase-like catalytic activity. |
| title_full | High surface area nitrogen-functionalized Ni nanozymes for efficient peroxidase-like catalytic activity. |
| title_fullStr | High surface area nitrogen-functionalized Ni nanozymes for efficient peroxidase-like catalytic activity. |
| title_full_unstemmed | High surface area nitrogen-functionalized Ni nanozymes for efficient peroxidase-like catalytic activity. |
| title_short | High surface area nitrogen-functionalized Ni nanozymes for efficient peroxidase-like catalytic activity. |
| title_sort | high surface area nitrogen functionalized ni nanozymes for efficient peroxidase like catalytic activity |
| url | https://doi.org/10.1371/journal.pone.0257777 |
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