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The investigation of chlorpyrifos (Cpy) detection of PEDOT:PSS-MXene(Ti2CTX)-BSA-GO composite using P-ISFET reduction method

MXenes are two-dimensional materials that are attractive for applications as sensors because they possess high conductivity, super hydrophilicity and high surface area. There already exist substantial researches on the use of Ti3C2Tx based MXenes as electrochemical biosensors, but in contrast Ti2CTX...

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Main Authors: Megat Muhammad Ikhsan Megat Hasnan, Lim, G. P., N. Nayan, Soon, C. F., A. A. Abd Halim, M. K. Ahmad, S. M. Said, M. S. Mohamed Ali, I. M. Noor
Format: Article
Language:English
English
Published: Springer Verlag 2022
Subjects:
TP1-1185 Chemical technology
Online Access:https://eprints.ums.edu.my/id/eprint/33512/1/The%20investigation%20of%20chlorpyrifos%20%28Cpy%29%20detection%20of%20PEDOTPSS-MXene%28Ti2CTX%29-BSA-GO.pdf
https://eprints.ums.edu.my/id/eprint/33512/2/The%20investigation%20of%20chlorpyrifos%20%28Cpy%29%20detection%20of%20PEDOT%20PSS-MXene%28Ti2CTX%29-BSA-GO%20_ABSTRACT.pdf
https://eprints.ums.edu.my/id/eprint/33512/
https://link.springer.com/content/pdf/10.1007/s00289-022-04105-5.pdf
https://doi.org/10.1007/s00289-022-04105-5
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spelling my.ums.eprints.335122022-07-25T01:03:38Z https://eprints.ums.edu.my/id/eprint/33512/ The investigation of chlorpyrifos (Cpy) detection of PEDOT:PSS-MXene(Ti2CTX)-BSA-GO composite using P-ISFET reduction method Megat Muhammad Ikhsan Megat Hasnan Lim, G. P. N. Nayan Soon, C. F. A. A. Abd Halim M. K. Ahmad S. M. Said M. S. Mohamed Ali I. M. Noor TP1-1185 Chemical technology MXenes are two-dimensional materials that are attractive for applications as sensors because they possess high conductivity, super hydrophilicity and high surface area. There already exist substantial researches on the use of Ti3C2Tx based MXenes as electrochemical biosensors, but in contrast Ti2CTX based MXenes are rarely discussed due to their inherent resistance instability. However, the use of Ti2CTX based MXenes is still worth exploring as theoretical studies have shown that Ti2CTX possesses a significantly lower bandgap compared to many other MXenes structures. Herein, this study examines the use of Ti2CTX MXene structures in a P-channel ion-sensitive field-effect transistor (P-ISFET) for the detection of Chlorpyrifos (Cpy). Compositing the PEDOT:PSS thin film with delaminated Ti2CTX MXenes flakes with graphene oxide (GO) and bovine serum albumin (BSA) allows it to maintain its sheet resistance at around 100 kOhm for 3 days. Interestingly when using the composite thin film, the minimum threshold voltage required to observe Cpy electroreduction is −0.1 V. This is much lower than that when using titanium dioxide (TiO2), which is −1.5 V. Composite thin films containing Ti2CTX MXene are found to detect Cpy with higher sensitivity compared to thin films without MXene. This is because the presence of Mxene in the PEDOT:PSS composite thin films improves the surface area available for Cpy detection. This study highlights the potential of Ti2CTx MXene-BSA composite as a promising 2D material for enzyme-free CPY detection. Springer Verlag 2022 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/33512/1/The%20investigation%20of%20chlorpyrifos%20%28Cpy%29%20detection%20of%20PEDOTPSS-MXene%28Ti2CTX%29-BSA-GO.pdf text en https://eprints.ums.edu.my/id/eprint/33512/2/The%20investigation%20of%20chlorpyrifos%20%28Cpy%29%20detection%20of%20PEDOT%20PSS-MXene%28Ti2CTX%29-BSA-GO%20_ABSTRACT.pdf Megat Muhammad Ikhsan Megat Hasnan and Lim, G. P. and N. Nayan and Soon, C. F. and A. A. Abd Halim and M. K. Ahmad and S. M. Said and M. S. Mohamed Ali and I. M. Noor (2022) The investigation of chlorpyrifos (Cpy) detection of PEDOT:PSS-MXene(Ti2CTX)-BSA-GO composite using P-ISFET reduction method. Polymer Bulletin. pp. 1-22. ISSN 0170-0839 https://link.springer.com/content/pdf/10.1007/s00289-022-04105-5.pdf https://doi.org/10.1007/s00289-022-04105-5
institution Universiti Malaysia Sabah
building UMS Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sabah
content_source UMS Institutional Repository
url_provider http://eprints.ums.edu.my/
language English
English
topic TP1-1185 Chemical technology
spellingShingle TP1-1185 Chemical technology
Megat Muhammad Ikhsan Megat Hasnan
Lim, G. P.
N. Nayan
Soon, C. F.
A. A. Abd Halim
M. K. Ahmad
S. M. Said
M. S. Mohamed Ali
I. M. Noor
The investigation of chlorpyrifos (Cpy) detection of PEDOT:PSS-MXene(Ti2CTX)-BSA-GO composite using P-ISFET reduction method
description MXenes are two-dimensional materials that are attractive for applications as sensors because they possess high conductivity, super hydrophilicity and high surface area. There already exist substantial researches on the use of Ti3C2Tx based MXenes as electrochemical biosensors, but in contrast Ti2CTX based MXenes are rarely discussed due to their inherent resistance instability. However, the use of Ti2CTX based MXenes is still worth exploring as theoretical studies have shown that Ti2CTX possesses a significantly lower bandgap compared to many other MXenes structures. Herein, this study examines the use of Ti2CTX MXene structures in a P-channel ion-sensitive field-effect transistor (P-ISFET) for the detection of Chlorpyrifos (Cpy). Compositing the PEDOT:PSS thin film with delaminated Ti2CTX MXenes flakes with graphene oxide (GO) and bovine serum albumin (BSA) allows it to maintain its sheet resistance at around 100 kOhm for 3 days. Interestingly when using the composite thin film, the minimum threshold voltage required to observe Cpy electroreduction is −0.1 V. This is much lower than that when using titanium dioxide (TiO2), which is −1.5 V. Composite thin films containing Ti2CTX MXene are found to detect Cpy with higher sensitivity compared to thin films without MXene. This is because the presence of Mxene in the PEDOT:PSS composite thin films improves the surface area available for Cpy detection. This study highlights the potential of Ti2CTx MXene-BSA composite as a promising 2D material for enzyme-free CPY detection.
format Article
author Megat Muhammad Ikhsan Megat Hasnan
Lim, G. P.
N. Nayan
Soon, C. F.
A. A. Abd Halim
M. K. Ahmad
S. M. Said
M. S. Mohamed Ali
I. M. Noor
author_facet Megat Muhammad Ikhsan Megat Hasnan
Lim, G. P.
N. Nayan
Soon, C. F.
A. A. Abd Halim
M. K. Ahmad
S. M. Said
M. S. Mohamed Ali
I. M. Noor
author_sort Megat Muhammad Ikhsan Megat Hasnan
title The investigation of chlorpyrifos (Cpy) detection of PEDOT:PSS-MXene(Ti2CTX)-BSA-GO composite using P-ISFET reduction method
title_short The investigation of chlorpyrifos (Cpy) detection of PEDOT:PSS-MXene(Ti2CTX)-BSA-GO composite using P-ISFET reduction method
title_full The investigation of chlorpyrifos (Cpy) detection of PEDOT:PSS-MXene(Ti2CTX)-BSA-GO composite using P-ISFET reduction method
title_fullStr The investigation of chlorpyrifos (Cpy) detection of PEDOT:PSS-MXene(Ti2CTX)-BSA-GO composite using P-ISFET reduction method
title_full_unstemmed The investigation of chlorpyrifos (Cpy) detection of PEDOT:PSS-MXene(Ti2CTX)-BSA-GO composite using P-ISFET reduction method
title_sort investigation of chlorpyrifos (cpy) detection of pedot:pss-mxene(ti2ctx)-bsa-go composite using p-isfet reduction method
publisher Springer Verlag
publishDate 2022
url https://eprints.ums.edu.my/id/eprint/33512/1/The%20investigation%20of%20chlorpyrifos%20%28Cpy%29%20detection%20of%20PEDOTPSS-MXene%28Ti2CTX%29-BSA-GO.pdf
https://eprints.ums.edu.my/id/eprint/33512/2/The%20investigation%20of%20chlorpyrifos%20%28Cpy%29%20detection%20of%20PEDOT%20PSS-MXene%28Ti2CTX%29-BSA-GO%20_ABSTRACT.pdf
https://eprints.ums.edu.my/id/eprint/33512/
https://link.springer.com/content/pdf/10.1007/s00289-022-04105-5.pdf
https://doi.org/10.1007/s00289-022-04105-5
_version_ 1760231173416550400
score 13.211869

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