Exfoliation and Noncovalent Functionalization of Graphene Surface with Poly-<i>N</i>-Vinyl-2-Pyrrolidone by In Situ Polymerization
Heteroatom functionalization on a graphene surface can endow the physical and structural properties of graphene. Here, a one-step in situ polymerization method was used for the noncovalent functionalization of a graphene surface with poly-<i>N</i>-vinyl-2-pyrrolidone (PNVP) and the exfol...
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MDPI AG
2021-03-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/26/6/1534 |
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| author | Suguna Perumal Raji Atchudan Thomas Nesakumar Jebakumar Immanuel Edison Jae-Jin Shim Yong Rok Lee |
| author_facet | Suguna Perumal Raji Atchudan Thomas Nesakumar Jebakumar Immanuel Edison Jae-Jin Shim Yong Rok Lee |
| author_sort | Suguna Perumal |
| collection | DOAJ |
| description | Heteroatom functionalization on a graphene surface can endow the physical and structural properties of graphene. Here, a one-step in situ polymerization method was used for the noncovalent functionalization of a graphene surface with poly-<i>N</i>-vinyl-2-pyrrolidone (PNVP) and the exfoliation of graphite into graphene sheets. The obtained graphene/poly-<i>N</i>-vinyl pyrrolidone (GPNVP) composite was thoroughly characterized. The surface morphology of GPNVP was observed using field emission scanning electron microscopy and high-resolution transmission electron microscopy. Raman spectroscopy and X-ray diffraction studies were carried out to check for the exfoliation of graphite into graphene sheets. Thermogravimetric analysis was performed to calculate the amount of PNVP on the graphene surface in the GPNVP composite. The successful formation of the GPNVP composite and functionalization of the graphene surface was confirmed by various studies. The cyclic voltammetry measurement at different scan rates (5–500 mV/s) and electrochemical impedance spectroscopy study of the GPNVP composite were performed in the typical three-electrode system. The GPNVP composite has excellent rate capability with the capacitive property. This study demonstrates the one-pot preparation of exfoliation and functionalization of a graphene surface with the heterocyclic polymer PNVP; the resulting GPNVP composite will be an ideal candidate for various electrochemical applications. |
| first_indexed | 2024-03-10T13:20:40Z |
| format | Article |
| id | doaj.art-c8ddfe630516484ab8b35816ad02870f |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T13:20:40Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-c8ddfe630516484ab8b35816ad02870f2023-11-21T10:04:34ZengMDPI AGMolecules1420-30492021-03-01266153410.3390/molecules26061534Exfoliation and Noncovalent Functionalization of Graphene Surface with Poly-<i>N</i>-Vinyl-2-Pyrrolidone by In Situ PolymerizationSuguna Perumal0Raji Atchudan1Thomas Nesakumar Jebakumar Immanuel Edison2Jae-Jin Shim3Yong Rok Lee4School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, KoreaSchool of Chemical Engineering, Yeungnam University, Gyeongsan 38541, KoreaSchool of Chemical Engineering, Yeungnam University, Gyeongsan 38541, KoreaSchool of Chemical Engineering, Yeungnam University, Gyeongsan 38541, KoreaSchool of Chemical Engineering, Yeungnam University, Gyeongsan 38541, KoreaHeteroatom functionalization on a graphene surface can endow the physical and structural properties of graphene. Here, a one-step in situ polymerization method was used for the noncovalent functionalization of a graphene surface with poly-<i>N</i>-vinyl-2-pyrrolidone (PNVP) and the exfoliation of graphite into graphene sheets. The obtained graphene/poly-<i>N</i>-vinyl pyrrolidone (GPNVP) composite was thoroughly characterized. The surface morphology of GPNVP was observed using field emission scanning electron microscopy and high-resolution transmission electron microscopy. Raman spectroscopy and X-ray diffraction studies were carried out to check for the exfoliation of graphite into graphene sheets. Thermogravimetric analysis was performed to calculate the amount of PNVP on the graphene surface in the GPNVP composite. The successful formation of the GPNVP composite and functionalization of the graphene surface was confirmed by various studies. The cyclic voltammetry measurement at different scan rates (5–500 mV/s) and electrochemical impedance spectroscopy study of the GPNVP composite were performed in the typical three-electrode system. The GPNVP composite has excellent rate capability with the capacitive property. This study demonstrates the one-pot preparation of exfoliation and functionalization of a graphene surface with the heterocyclic polymer PNVP; the resulting GPNVP composite will be an ideal candidate for various electrochemical applications.https://www.mdpi.com/1420-3049/26/6/1534exfoliation of graphitegraphenenoncovalent functionalizationin situ polymerizationcyclic voltammetry |
| spellingShingle | Suguna Perumal Raji Atchudan Thomas Nesakumar Jebakumar Immanuel Edison Jae-Jin Shim Yong Rok Lee Exfoliation and Noncovalent Functionalization of Graphene Surface with Poly-<i>N</i>-Vinyl-2-Pyrrolidone by In Situ Polymerization Molecules exfoliation of graphite graphene noncovalent functionalization in situ polymerization cyclic voltammetry |
| title | Exfoliation and Noncovalent Functionalization of Graphene Surface with Poly-<i>N</i>-Vinyl-2-Pyrrolidone by In Situ Polymerization |
| title_full | Exfoliation and Noncovalent Functionalization of Graphene Surface with Poly-<i>N</i>-Vinyl-2-Pyrrolidone by In Situ Polymerization |
| title_fullStr | Exfoliation and Noncovalent Functionalization of Graphene Surface with Poly-<i>N</i>-Vinyl-2-Pyrrolidone by In Situ Polymerization |
| title_full_unstemmed | Exfoliation and Noncovalent Functionalization of Graphene Surface with Poly-<i>N</i>-Vinyl-2-Pyrrolidone by In Situ Polymerization |
| title_short | Exfoliation and Noncovalent Functionalization of Graphene Surface with Poly-<i>N</i>-Vinyl-2-Pyrrolidone by In Situ Polymerization |
| title_sort | exfoliation and noncovalent functionalization of graphene surface with poly i n i vinyl 2 pyrrolidone by in situ polymerization |
| topic | exfoliation of graphite graphene noncovalent functionalization in situ polymerization cyclic voltammetry |
| url | https://www.mdpi.com/1420-3049/26/6/1534 |
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