Electrochemically functionalized single-walled carbon nanotubes for ultrasensitive detection of BTEX vapors
Single-walled carbon nanotubes (SWNTs) have been functionalized electrochemically with porphyrin and were employed as the channel to fabricate the chemical field-effect transistor. Tetraphenylporphyrin was chosen for functionalization purpose. The primary aim of this study was to evaluate the sensin...
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th-mahidol.769392022-08-04T18:26:32Z Electrochemically functionalized single-walled carbon nanotubes for ultrasensitive detection of BTEX vapors Tapan Sarkar Sira Srinives University of California, Riverside Mahidol University Guru Gobind Singh Indraprastha University Engineering Materials Science Physics and Astronomy Single-walled carbon nanotubes (SWNTs) have been functionalized electrochemically with porphyrin and were employed as the channel to fabricate the chemical field-effect transistor. Tetraphenylporphyrin was chosen for functionalization purpose. The primary aim of this study was to evaluate the sensing performance of functionalized SWNTs for the detection of BTEX vapor and to understand the underlying mechanism for the detection. The functionalization showed a significant enhancement in the sensing response for all analytes starting from 1.25 ppm to 15 ppm of concentration. A sub-ppm limit of detection was also observed. The systematic study of field effect transistor (FET) measurements indicates that the sensing mechanism is dominated by the electrostatic gating effect. 2022-08-04T08:35:21Z 2022-08-04T08:35:21Z 2021-07-15 Article Microelectronic Engineering. Vol.247, (2021) 10.1016/j.mee.2021.111584 01679317 2-s2.0-85107809445 https://repository.li.mahidol.ac.th/handle/123456789/76939 Mahidol University SCOPUS https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85107809445&origin=inward |
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Engineering Materials Science Physics and Astronomy Tapan Sarkar Sira Srinives Electrochemically functionalized single-walled carbon nanotubes for ultrasensitive detection of BTEX vapors |
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Single-walled carbon nanotubes (SWNTs) have been functionalized electrochemically with porphyrin and were employed as the channel to fabricate the chemical field-effect transistor. Tetraphenylporphyrin was chosen for functionalization purpose. The primary aim of this study was to evaluate the sensing performance of functionalized SWNTs for the detection of BTEX vapor and to understand the underlying mechanism for the detection. The functionalization showed a significant enhancement in the sensing response for all analytes starting from 1.25 ppm to 15 ppm of concentration. A sub-ppm limit of detection was also observed. The systematic study of field effect transistor (FET) measurements indicates that the sensing mechanism is dominated by the electrostatic gating effect. |
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University of California, Riverside |
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University of California, Riverside Tapan Sarkar Sira Srinives |
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Article |
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Tapan Sarkar Sira Srinives |
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Tapan Sarkar |
title |
Electrochemically functionalized single-walled carbon nanotubes for ultrasensitive detection of BTEX vapors |
title_short |
Electrochemically functionalized single-walled carbon nanotubes for ultrasensitive detection of BTEX vapors |
title_full |
Electrochemically functionalized single-walled carbon nanotubes for ultrasensitive detection of BTEX vapors |
title_fullStr |
Electrochemically functionalized single-walled carbon nanotubes for ultrasensitive detection of BTEX vapors |
title_full_unstemmed |
Electrochemically functionalized single-walled carbon nanotubes for ultrasensitive detection of BTEX vapors |
title_sort |
electrochemically functionalized single-walled carbon nanotubes for ultrasensitive detection of btex vapors |
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2022 |
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https://repository.li.mahidol.ac.th/handle/123456789/76939 |
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1763495481462226944 |