Polymerized stimuli-responsive microgel hybrids of silver nanoparticles as efficient reusable catalyst for reduction reaction
We have showcased the potential of polymerized hydrogels (PGMs) with uniform-sized stimuli-responsive microgel particles as promising alternatives to prevent aggregation in solution based nanoparticle systems. In the current work, we implemented the PGM concept by embedding anionic stimuli-responsiv...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-03-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844024022758 |
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| author | Biswajit Pany Amrito Ghosh Majumdar Suresh Bhat Satybrata Si Junpei Yamanaka Priti S. Mohanty |
| author_facet | Biswajit Pany Amrito Ghosh Majumdar Suresh Bhat Satybrata Si Junpei Yamanaka Priti S. Mohanty |
| author_sort | Biswajit Pany |
| collection | DOAJ |
| description | We have showcased the potential of polymerized hydrogels (PGMs) with uniform-sized stimuli-responsive microgel particles as promising alternatives to prevent aggregation in solution based nanoparticle systems. In the current work, we implemented the PGM concept by embedding anionic stimuli-responsive microgels (PNIPAM-co-AAc)-silver (Ag) hybrids within a hydrogel matrix. These PGM@AgNP hybrid materials are used as catalysts for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) in the presence of sodium borohydride. UV-VIS spectroscopy is used for studying catalytic activity. In the solution based system, the complete reduction of 4-NP to 4-AP took 30 minutes with pure Ag nanoparticles, 24 minutes with PNIPAM-Ag hybrid (Neutral) microgels and 15 minutes with PNIPAM-co-AAc-Ag (Anionic) hybrid microgels. In contrast PGM containing PNIPAM-co-AAc-Ag hybrids achieved full reduction in just 15 minutes, along with a 3-minute induction period. For pure Ag nanoparticles, the first-order rate constant is found to be 0.25 min−1, for PNIPAM-Ag hybrid (Neutral), it is 0.21 min−1 and for PNIPAM-co-AAc-Ag (Anionic), it is 0.5 min−1 where as for PGM containing anionic microgel hybrids it is found to be 0.8 min−1. Furthermore, the reusability of the PGM-Ag (anionic) materials for catalytic activity remains unaltered even after several washings. In summary, our study highlights the effectiveness of PGM@AgNP materials as efficient catalysts for the reduction of 4-nitrophenol to 4-aminophenol, indicating their versatile potential in various catalytic applications. |
| first_indexed | 2024-03-07T21:29:08Z |
| format | Article |
| id | doaj.art-d304113098e24d26b9769cbc681e8ee4 |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-04-24T23:16:38Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
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| series | Heliyon |
| spelling | doaj.art-d304113098e24d26b9769cbc681e8ee42024-03-17T07:55:14ZengElsevierHeliyon2405-84402024-03-01105e26244Polymerized stimuli-responsive microgel hybrids of silver nanoparticles as efficient reusable catalyst for reduction reactionBiswajit Pany0Amrito Ghosh Majumdar1Suresh Bhat2Satybrata Si3Junpei Yamanaka4Priti S. Mohanty5School of Chemical Technology, Kalinga Institute of Industrial Technology (KIIT), Deemed to be University, Bhubaneswar, 751024, India; School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Deemed to be University, Bhubaneswar, 751024, IndiaSchool of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Deemed to be University, Bhubaneswar, 751024, IndiaPolymer Science & Engineering Division, CSIR-National Chemical Laboratory, Pune, 411008, IndiaSchool of Chemical Technology, Kalinga Institute of Industrial Technology (KIIT), Deemed to be University, Bhubaneswar, 751024, India; School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Deemed to be University, Bhubaneswar, 751024, IndiaGraduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, 467-8603, JapanSchool of Chemical Technology, Kalinga Institute of Industrial Technology (KIIT), Deemed to be University, Bhubaneswar, 751024, India; School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Deemed to be University, Bhubaneswar, 751024, India; Corresponding author, School of Chemical Technology and Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Deemed to be University, Bhubaneswar, 751024, India.We have showcased the potential of polymerized hydrogels (PGMs) with uniform-sized stimuli-responsive microgel particles as promising alternatives to prevent aggregation in solution based nanoparticle systems. In the current work, we implemented the PGM concept by embedding anionic stimuli-responsive microgels (PNIPAM-co-AAc)-silver (Ag) hybrids within a hydrogel matrix. These PGM@AgNP hybrid materials are used as catalysts for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) in the presence of sodium borohydride. UV-VIS spectroscopy is used for studying catalytic activity. In the solution based system, the complete reduction of 4-NP to 4-AP took 30 minutes with pure Ag nanoparticles, 24 minutes with PNIPAM-Ag hybrid (Neutral) microgels and 15 minutes with PNIPAM-co-AAc-Ag (Anionic) hybrid microgels. In contrast PGM containing PNIPAM-co-AAc-Ag hybrids achieved full reduction in just 15 minutes, along with a 3-minute induction period. For pure Ag nanoparticles, the first-order rate constant is found to be 0.25 min−1, for PNIPAM-Ag hybrid (Neutral), it is 0.21 min−1 and for PNIPAM-co-AAc-Ag (Anionic), it is 0.5 min−1 where as for PGM containing anionic microgel hybrids it is found to be 0.8 min−1. Furthermore, the reusability of the PGM-Ag (anionic) materials for catalytic activity remains unaltered even after several washings. In summary, our study highlights the effectiveness of PGM@AgNP materials as efficient catalysts for the reduction of 4-nitrophenol to 4-aminophenol, indicating their versatile potential in various catalytic applications.http://www.sciencedirect.com/science/article/pii/S2405844024022758Stimuli-responsive microgelsMicrogel-metal hybridsPNIPAM microgelsPolymerized hydrogel matrix(PGMNanomaterial catalystsLight scattering |
| spellingShingle | Biswajit Pany Amrito Ghosh Majumdar Suresh Bhat Satybrata Si Junpei Yamanaka Priti S. Mohanty Polymerized stimuli-responsive microgel hybrids of silver nanoparticles as efficient reusable catalyst for reduction reaction Heliyon Stimuli-responsive microgels Microgel-metal hybrids PNIPAM microgels Polymerized hydrogel matrix(PGM Nanomaterial catalysts Light scattering |
| title | Polymerized stimuli-responsive microgel hybrids of silver nanoparticles as efficient reusable catalyst for reduction reaction |
| title_full | Polymerized stimuli-responsive microgel hybrids of silver nanoparticles as efficient reusable catalyst for reduction reaction |
| title_fullStr | Polymerized stimuli-responsive microgel hybrids of silver nanoparticles as efficient reusable catalyst for reduction reaction |
| title_full_unstemmed | Polymerized stimuli-responsive microgel hybrids of silver nanoparticles as efficient reusable catalyst for reduction reaction |
| title_short | Polymerized stimuli-responsive microgel hybrids of silver nanoparticles as efficient reusable catalyst for reduction reaction |
| title_sort | polymerized stimuli responsive microgel hybrids of silver nanoparticles as efficient reusable catalyst for reduction reaction |
| topic | Stimuli-responsive microgels Microgel-metal hybrids PNIPAM microgels Polymerized hydrogel matrix(PGM Nanomaterial catalysts Light scattering |
| url | http://www.sciencedirect.com/science/article/pii/S2405844024022758 |
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