Sensing properties of sulfonated multi-walled carbon nanotube and graphene nanocomposites with polyaniline
Here, we discuss one of the simplest approaches for chemical functionalization of in-situ prepared polyaniline (Pani) and its nanocomposites with multi-walled carbon nanotubes (MWCNT) and graphene (GN) in chlorosulphonic acid. The effect of polymerization and functionalization was characterized by F...
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| Format: | Article |
| Language: | English |
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Elsevier
2019-03-01
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| Series: | Journal of Science: Advanced Materials and Devices |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468217918301990 |
| _version_ | 1818693071436513280 |
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| author | Mahfoozurrahman Khan Tarique Anwer Faiz Mohammad |
| author_facet | Mahfoozurrahman Khan Tarique Anwer Faiz Mohammad |
| author_sort | Mahfoozurrahman Khan |
| collection | DOAJ |
| description | Here, we discuss one of the simplest approaches for chemical functionalization of in-situ prepared polyaniline (Pani) and its nanocomposites with multi-walled carbon nanotubes (MWCNT) and graphene (GN) in chlorosulphonic acid. The effect of polymerization and functionalization was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) analysis, Field emission scanning electron microscopy (FESEM) and electro-thermal analysis. Results also revealed the presence of π−π interactions between Pani and carbon allotropes leading to the formation of charge-transfer complexes. This strong π−π interaction significantly increased the resultant electrical conductivity, stabilizing them as well. Further, theirs back to back sulphonation in chlorosulphonic acid significantly enhanced the solubility in one way but caused a heavy loss in conductivity conversely. The thermoelectric properties of the as-prepared nanocomposites were investigated as a function of MWCNT and GN contents. It was observed that as-prepared Pani/GN nanocomposites showed a greater electrical conductivity as well as an improved thermal stability in terms of DC electrical conductivity retention under isothermal and cyclic ageing conditions compared with Pani/MWCNT and Pani. Finally these oxidative products were also studied for their sensing response towards amine to detect whether the particular compound is either 1°, 2°, or 3° amine. Keywords: In-situ polymerization, Pani/MWCNT and Pani/GN nanocomposite, Sulphonation, Isothermal and cyclic ageing technique, Amine identification |
| first_indexed | 2024-12-17T13:07:51Z |
| format | Article |
| id | doaj.art-55167fb516ff4a3093f8848e46ac7efb |
| institution | Directory Open Access Journal |
| issn | 2468-2179 |
| language | English |
| last_indexed | 2024-12-17T13:07:51Z |
| publishDate | 2019-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Science: Advanced Materials and Devices |
| spelling | doaj.art-55167fb516ff4a3093f8848e46ac7efb2022-12-21T21:47:12ZengElsevierJournal of Science: Advanced Materials and Devices2468-21792019-03-0141132142Sensing properties of sulfonated multi-walled carbon nanotube and graphene nanocomposites with polyanilineMahfoozurrahman Khan0Tarique Anwer1Faiz Mohammad2Corresponding author.; Department of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh, 202002, IndiaDepartment of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh, 202002, IndiaDepartment of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh, 202002, IndiaHere, we discuss one of the simplest approaches for chemical functionalization of in-situ prepared polyaniline (Pani) and its nanocomposites with multi-walled carbon nanotubes (MWCNT) and graphene (GN) in chlorosulphonic acid. The effect of polymerization and functionalization was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) analysis, Field emission scanning electron microscopy (FESEM) and electro-thermal analysis. Results also revealed the presence of π−π interactions between Pani and carbon allotropes leading to the formation of charge-transfer complexes. This strong π−π interaction significantly increased the resultant electrical conductivity, stabilizing them as well. Further, theirs back to back sulphonation in chlorosulphonic acid significantly enhanced the solubility in one way but caused a heavy loss in conductivity conversely. The thermoelectric properties of the as-prepared nanocomposites were investigated as a function of MWCNT and GN contents. It was observed that as-prepared Pani/GN nanocomposites showed a greater electrical conductivity as well as an improved thermal stability in terms of DC electrical conductivity retention under isothermal and cyclic ageing conditions compared with Pani/MWCNT and Pani. Finally these oxidative products were also studied for their sensing response towards amine to detect whether the particular compound is either 1°, 2°, or 3° amine. Keywords: In-situ polymerization, Pani/MWCNT and Pani/GN nanocomposite, Sulphonation, Isothermal and cyclic ageing technique, Amine identificationhttp://www.sciencedirect.com/science/article/pii/S2468217918301990 |
| spellingShingle | Mahfoozurrahman Khan Tarique Anwer Faiz Mohammad Sensing properties of sulfonated multi-walled carbon nanotube and graphene nanocomposites with polyaniline Journal of Science: Advanced Materials and Devices |
| title | Sensing properties of sulfonated multi-walled carbon nanotube and graphene nanocomposites with polyaniline |
| title_full | Sensing properties of sulfonated multi-walled carbon nanotube and graphene nanocomposites with polyaniline |
| title_fullStr | Sensing properties of sulfonated multi-walled carbon nanotube and graphene nanocomposites with polyaniline |
| title_full_unstemmed | Sensing properties of sulfonated multi-walled carbon nanotube and graphene nanocomposites with polyaniline |
| title_short | Sensing properties of sulfonated multi-walled carbon nanotube and graphene nanocomposites with polyaniline |
| title_sort | sensing properties of sulfonated multi walled carbon nanotube and graphene nanocomposites with polyaniline |
| url | http://www.sciencedirect.com/science/article/pii/S2468217918301990 |
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