Performance of electrochemical amperometric sensor based on annealed and non-annealed PANI-Ag-Pt nanocomposite thin films for E. coli detection
Herein, we report the fabrication of polyaniline with Ag-Pt alloy nanocomposite thin films based amperometric E. coli sensor. The effects of annealing at 300oC during the synthesis of PANI-Ag-Pt nanocomposite thin films are studied. XRD, AFM, FESEM and FTIR spectroscopy analyses are conducted to cha...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Universiti Malaysia Perlis
2025
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| Online Access: | http://psasir.upm.edu.my/id/eprint/120910/ http://psasir.upm.edu.my/id/eprint/120910/1/120910.pdf |
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| author | Abdullah, Huda Mohammad Naim, Norshafadzila Abdul Hamid, Aidil Mohamad Zin, Noraziah Othman, Mohd Hafiz Dzarfan Fen, Yap Wing Yuliarto, Brian |
| author_facet | Abdullah, Huda Mohammad Naim, Norshafadzila Abdul Hamid, Aidil Mohamad Zin, Noraziah Othman, Mohd Hafiz Dzarfan Fen, Yap Wing Yuliarto, Brian |
| author_sort | Abdullah, Huda |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Herein, we report the fabrication of polyaniline with Ag-Pt alloy nanocomposite thin films based amperometric E. coli sensor. The effects of annealing at 300oC during the synthesis of PANI-Ag-Pt nanocomposite thin films are studied. XRD, AFM, FESEM and FTIR spectroscopy analyses are conducted to characterize the films. Sensor performance is investigated by the I-V characteristic of PANI-Ag-Pt films with and without the presence of E. coli. From XRD analysis, annealed films have larger crystallite sizes than non-annealed films. AFM results indicate that annealed films have lower surface roughness but larger grain size than non-annealed films. FESEM images show Ag-Pt nanorods with sizes of 200-300 nm for non-annealed films and Ag-Pt nanocubes with sizes around 100-550 nm for annealed films. The composition of PANI-Ag0.2-Pt0.8 nanocomposite thin film has higher conductivity and performed the maximum sensitivity upon E. coli presence. The sensitivity of annealed PANI-Ag-Pt films is higher than non-annealed PANI-Ag-Pt films. |
| first_indexed | 2025-11-15T14:49:18Z |
| format | Article |
| id | upm-120910 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T14:49:18Z |
| publishDate | 2025 |
| publisher | Universiti Malaysia Perlis |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1209102025-10-15T06:49:56Z http://psasir.upm.edu.my/id/eprint/120910/ Performance of electrochemical amperometric sensor based on annealed and non-annealed PANI-Ag-Pt nanocomposite thin films for E. coli detection Abdullah, Huda Mohammad Naim, Norshafadzila Abdul Hamid, Aidil Mohamad Zin, Noraziah Othman, Mohd Hafiz Dzarfan Fen, Yap Wing Yuliarto, Brian Herein, we report the fabrication of polyaniline with Ag-Pt alloy nanocomposite thin films based amperometric E. coli sensor. The effects of annealing at 300oC during the synthesis of PANI-Ag-Pt nanocomposite thin films are studied. XRD, AFM, FESEM and FTIR spectroscopy analyses are conducted to characterize the films. Sensor performance is investigated by the I-V characteristic of PANI-Ag-Pt films with and without the presence of E. coli. From XRD analysis, annealed films have larger crystallite sizes than non-annealed films. AFM results indicate that annealed films have lower surface roughness but larger grain size than non-annealed films. FESEM images show Ag-Pt nanorods with sizes of 200-300 nm for non-annealed films and Ag-Pt nanocubes with sizes around 100-550 nm for annealed films. The composition of PANI-Ag0.2-Pt0.8 nanocomposite thin film has higher conductivity and performed the maximum sensitivity upon E. coli presence. The sensitivity of annealed PANI-Ag-Pt films is higher than non-annealed PANI-Ag-Pt films. Universiti Malaysia Perlis 2025 Article PeerReviewed text en cc_by_nc_sa_4 http://psasir.upm.edu.my/id/eprint/120910/1/120910.pdf Abdullah, Huda and Mohammad Naim, Norshafadzila and Abdul Hamid, Aidil and Mohamad Zin, Noraziah and Othman, Mohd Hafiz Dzarfan and Fen, Yap Wing and Yuliarto, Brian (2025) Performance of electrochemical amperometric sensor based on annealed and non-annealed PANI-Ag-Pt nanocomposite thin films for E. coli detection. International Journal of Nanoelectronics and Materials, 18 (2). pp. 204-212. ISSN 1985-5761; eISSN: 2232-1535 https://ejournal.unimap.edu.my/index.php/ijneam/article/view/2063 10.58915/ijneam.v18i2.2063 |
| spellingShingle | Abdullah, Huda Mohammad Naim, Norshafadzila Abdul Hamid, Aidil Mohamad Zin, Noraziah Othman, Mohd Hafiz Dzarfan Fen, Yap Wing Yuliarto, Brian Performance of electrochemical amperometric sensor based on annealed and non-annealed PANI-Ag-Pt nanocomposite thin films for E. coli detection |
| title | Performance of electrochemical amperometric sensor based on annealed and non-annealed PANI-Ag-Pt nanocomposite thin films for E. coli detection |
| title_full | Performance of electrochemical amperometric sensor based on annealed and non-annealed PANI-Ag-Pt nanocomposite thin films for E. coli detection |
| title_fullStr | Performance of electrochemical amperometric sensor based on annealed and non-annealed PANI-Ag-Pt nanocomposite thin films for E. coli detection |
| title_full_unstemmed | Performance of electrochemical amperometric sensor based on annealed and non-annealed PANI-Ag-Pt nanocomposite thin films for E. coli detection |
| title_short | Performance of electrochemical amperometric sensor based on annealed and non-annealed PANI-Ag-Pt nanocomposite thin films for E. coli detection |
| title_sort | performance of electrochemical amperometric sensor based on annealed and non-annealed pani-ag-pt nanocomposite thin films for e. coli detection |
| url | http://psasir.upm.edu.my/id/eprint/120910/ http://psasir.upm.edu.my/id/eprint/120910/ http://psasir.upm.edu.my/id/eprint/120910/ http://psasir.upm.edu.my/id/eprint/120910/1/120910.pdf |