Covalent Immobilization of Polyaniline Doped with Ag<sup>+</sup> or Cu<sup>2+</sup> on Carbon Nanotubes for Ethylene Chemical Sensing
Multi-walled carbon nanotubes (MWCNTs) are promising materials for chemical gas sensing because of their high electrical and mechanical properties and significant sensitivity to changes in the local environment. However, high-content MWCNT films suffer from the low tunability of the electrical resis...
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2021-08-01
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| Online Access: | https://www.mdpi.com/2079-4991/11/8/1993 |
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| author | Hagai Klein Karthik Ananth Mani Vinay Chauhan Noga Yaakov Franziska Grzegorzewski Abraham J. Domb Guy Mechrez |
| author_facet | Hagai Klein Karthik Ananth Mani Vinay Chauhan Noga Yaakov Franziska Grzegorzewski Abraham J. Domb Guy Mechrez |
| author_sort | Hagai Klein |
| collection | DOAJ |
| description | Multi-walled carbon nanotubes (MWCNTs) are promising materials for chemical gas sensing because of their high electrical and mechanical properties and significant sensitivity to changes in the local environment. However, high-content MWCNT films suffer from the low tunability of the electrical resistance, which is crucial for high chemoresistive sensing performance. This study reports the conjugation of MWCNTs and oligomers of polyaniline (PANI) doped with Ag<sup>+</sup> or Cu<sup>2+</sup> incorporated into a PVC/polyacrylate. MWCNTs were sonicated in n-methyl pyrrolidine (NMP), and PANI was conjugated via a 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide and an <i>N</i>-hydroxysuccinimide (EDC/NHS) process. MWCNT/PANI Ag<sup>+</sup> or Cu<sup>2+</sup> conjugates were doped to form a coordinate bond. The doped conjugates were successfully incorporated into the PVC/polyacrylate. These MWCNT/PANI conjugates doped were exposed to different concentrations of ethylene gas to examine their feasibility for ethylene detection. |
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| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T08:32:39Z |
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| spelling | doaj.art-d086ba5d5e694b6898744ac1d0b60c762023-11-22T08:58:52ZengMDPI AGNanomaterials2079-49912021-08-01118199310.3390/nano11081993Covalent Immobilization of Polyaniline Doped with Ag<sup>+</sup> or Cu<sup>2+</sup> on Carbon Nanotubes for Ethylene Chemical SensingHagai Klein0Karthik Ananth Mani1Vinay Chauhan2Noga Yaakov3Franziska Grzegorzewski4Abraham J. Domb5Guy Mechrez6Department of Food Sciences, Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Institute, 68 HaMaccabim Road, Rishon Lezion 7505101, IsraelDepartment of Food Sciences, Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Institute, 68 HaMaccabim Road, Rishon Lezion 7505101, IsraelDepartment of Food Sciences, Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Institute, 68 HaMaccabim Road, Rishon Lezion 7505101, IsraelDepartment of Food Sciences, Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Institute, 68 HaMaccabim Road, Rishon Lezion 7505101, IsraelDepartment of Food Sciences, Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Institute, 68 HaMaccabim Road, Rishon Lezion 7505101, IsraelThe School of Pharmacy, Faculty of Medicine the Hebrew, University of Jerusalem, Ein Karem, Jerusalem 9112102, IsraelDepartment of Food Sciences, Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Institute, 68 HaMaccabim Road, Rishon Lezion 7505101, IsraelMulti-walled carbon nanotubes (MWCNTs) are promising materials for chemical gas sensing because of their high electrical and mechanical properties and significant sensitivity to changes in the local environment. However, high-content MWCNT films suffer from the low tunability of the electrical resistance, which is crucial for high chemoresistive sensing performance. This study reports the conjugation of MWCNTs and oligomers of polyaniline (PANI) doped with Ag<sup>+</sup> or Cu<sup>2+</sup> incorporated into a PVC/polyacrylate. MWCNTs were sonicated in n-methyl pyrrolidine (NMP), and PANI was conjugated via a 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide and an <i>N</i>-hydroxysuccinimide (EDC/NHS) process. MWCNT/PANI Ag<sup>+</sup> or Cu<sup>2+</sup> conjugates were doped to form a coordinate bond. The doped conjugates were successfully incorporated into the PVC/polyacrylate. These MWCNT/PANI conjugates doped were exposed to different concentrations of ethylene gas to examine their feasibility for ethylene detection.https://www.mdpi.com/2079-4991/11/8/1993CNTspolyanilineethylenechemoresistors |
| spellingShingle | Hagai Klein Karthik Ananth Mani Vinay Chauhan Noga Yaakov Franziska Grzegorzewski Abraham J. Domb Guy Mechrez Covalent Immobilization of Polyaniline Doped with Ag<sup>+</sup> or Cu<sup>2+</sup> on Carbon Nanotubes for Ethylene Chemical Sensing Nanomaterials CNTs polyaniline ethylene chemoresistors |
| title | Covalent Immobilization of Polyaniline Doped with Ag<sup>+</sup> or Cu<sup>2+</sup> on Carbon Nanotubes for Ethylene Chemical Sensing |
| title_full | Covalent Immobilization of Polyaniline Doped with Ag<sup>+</sup> or Cu<sup>2+</sup> on Carbon Nanotubes for Ethylene Chemical Sensing |
| title_fullStr | Covalent Immobilization of Polyaniline Doped with Ag<sup>+</sup> or Cu<sup>2+</sup> on Carbon Nanotubes for Ethylene Chemical Sensing |
| title_full_unstemmed | Covalent Immobilization of Polyaniline Doped with Ag<sup>+</sup> or Cu<sup>2+</sup> on Carbon Nanotubes for Ethylene Chemical Sensing |
| title_short | Covalent Immobilization of Polyaniline Doped with Ag<sup>+</sup> or Cu<sup>2+</sup> on Carbon Nanotubes for Ethylene Chemical Sensing |
| title_sort | covalent immobilization of polyaniline doped with ag sup sup or cu sup 2 sup on carbon nanotubes for ethylene chemical sensing |
| topic | CNTs polyaniline ethylene chemoresistors |
| url | https://www.mdpi.com/2079-4991/11/8/1993 |
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