Bio-based polycationic polyurethane as an ion-selective membrane for nitrate tapered optical fiber sensors
A novel bio-based polycationic polyurethane as an ion-selective membrane for nitrate sensing was successfully developed. In this work, the intermolecular interactions at active polymeric sites play a primary role in selective nitrate-ion detection. From the experiment, FTIR shows a significant shift...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Institute of Electrical and Electronics Engineers
2019
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| Online Access: | http://psasir.upm.edu.my/id/eprint/80810/ http://psasir.upm.edu.my/id/eprint/80810/1/FIBER.pdf |
| _version_ | 1848858959416393728 |
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| author | Yusoff, Atiqah Azeman, Nur Hidayah Mohamed Kassim, Muhammad Faizal Mobarak, Nadhratun Naiim Badri, Khairiah Mahdi, Mohd Adzir Su'ait, Mohd Sukor A. Bakar, Ahmad Ashrif |
| author_facet | Yusoff, Atiqah Azeman, Nur Hidayah Mohamed Kassim, Muhammad Faizal Mobarak, Nadhratun Naiim Badri, Khairiah Mahdi, Mohd Adzir Su'ait, Mohd Sukor A. Bakar, Ahmad Ashrif |
| author_sort | Yusoff, Atiqah |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | A novel bio-based polycationic polyurethane as an ion-selective membrane for nitrate sensing was successfully developed. In this work, the intermolecular interactions at active polymeric sites play a primary role in selective nitrate-ion detection. From the experiment, FTIR shows a significant shift from 1543 cm−1 to 1548 cm−1 in N-H bending, indicating that intermolecular interactions occur between the polycationic polyurethane and nitrate. AFM shows that the surface roughness of the polycationic polyurethane decreases from 95.7 nm to 12.2 nm after immersion in nitrate solution. Meanwhile, FESEM images show that the bright area, which represents the hard segment of polycationic polyurethane, decreases after immersion, indicating that the nitrate is interacting with the hard segment of the polycationic polyurethane via intermolecular interaction. Furthermore, EIS shows that the conductivity increases from 2.84 × 10−11 to 5.34 × 10−11 S cm−1 after ion exchange occurs between the iodide and nitrate on the polycationic polyurethane. To assess the sensing performance, the sensor probe is fabricated by coating the polycationic polyurethane thin film on the tapered region of an optical fiber. Rapid detection, good repeatability, and a sensitivity of 5.94 × 10−2µW/ppm are obtained for nitrate detection using the above bio-based-sensing material. The selectivity study also shows that the sensing material possesses high affinity toward the nitrate ion. |
| first_indexed | 2025-11-15T12:21:44Z |
| format | Article |
| id | upm-80810 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T12:21:44Z |
| publishDate | 2019 |
| publisher | Institute of Electrical and Electronics Engineers |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-808102020-10-15T22:13:36Z http://psasir.upm.edu.my/id/eprint/80810/ Bio-based polycationic polyurethane as an ion-selective membrane for nitrate tapered optical fiber sensors Yusoff, Atiqah Azeman, Nur Hidayah Mohamed Kassim, Muhammad Faizal Mobarak, Nadhratun Naiim Badri, Khairiah Mahdi, Mohd Adzir Su'ait, Mohd Sukor A. Bakar, Ahmad Ashrif A novel bio-based polycationic polyurethane as an ion-selective membrane for nitrate sensing was successfully developed. In this work, the intermolecular interactions at active polymeric sites play a primary role in selective nitrate-ion detection. From the experiment, FTIR shows a significant shift from 1543 cm−1 to 1548 cm−1 in N-H bending, indicating that intermolecular interactions occur between the polycationic polyurethane and nitrate. AFM shows that the surface roughness of the polycationic polyurethane decreases from 95.7 nm to 12.2 nm after immersion in nitrate solution. Meanwhile, FESEM images show that the bright area, which represents the hard segment of polycationic polyurethane, decreases after immersion, indicating that the nitrate is interacting with the hard segment of the polycationic polyurethane via intermolecular interaction. Furthermore, EIS shows that the conductivity increases from 2.84 × 10−11 to 5.34 × 10−11 S cm−1 after ion exchange occurs between the iodide and nitrate on the polycationic polyurethane. To assess the sensing performance, the sensor probe is fabricated by coating the polycationic polyurethane thin film on the tapered region of an optical fiber. Rapid detection, good repeatability, and a sensitivity of 5.94 × 10−2µW/ppm are obtained for nitrate detection using the above bio-based-sensing material. The selectivity study also shows that the sensing material possesses high affinity toward the nitrate ion. Institute of Electrical and Electronics Engineers 2019 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/80810/1/FIBER.pdf Yusoff, Atiqah and Azeman, Nur Hidayah and Mohamed Kassim, Muhammad Faizal and Mobarak, Nadhratun Naiim and Badri, Khairiah and Mahdi, Mohd Adzir and Su'ait, Mohd Sukor and A. Bakar, Ahmad Ashrif (2019) Bio-based polycationic polyurethane as an ion-selective membrane for nitrate tapered optical fiber sensors. IEEE Access, 7. pp. 157103-157112. ISSN 2169-3536 https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8886375 10.1109/ACCESS.2019.2950012 |
| spellingShingle | Yusoff, Atiqah Azeman, Nur Hidayah Mohamed Kassim, Muhammad Faizal Mobarak, Nadhratun Naiim Badri, Khairiah Mahdi, Mohd Adzir Su'ait, Mohd Sukor A. Bakar, Ahmad Ashrif Bio-based polycationic polyurethane as an ion-selective membrane for nitrate tapered optical fiber sensors |
| title | Bio-based polycationic polyurethane as an ion-selective membrane for nitrate tapered optical fiber sensors |
| title_full | Bio-based polycationic polyurethane as an ion-selective membrane for nitrate tapered optical fiber sensors |
| title_fullStr | Bio-based polycationic polyurethane as an ion-selective membrane for nitrate tapered optical fiber sensors |
| title_full_unstemmed | Bio-based polycationic polyurethane as an ion-selective membrane for nitrate tapered optical fiber sensors |
| title_short | Bio-based polycationic polyurethane as an ion-selective membrane for nitrate tapered optical fiber sensors |
| title_sort | bio-based polycationic polyurethane as an ion-selective membrane for nitrate tapered optical fiber sensors |
| url | http://psasir.upm.edu.my/id/eprint/80810/ http://psasir.upm.edu.my/id/eprint/80810/ http://psasir.upm.edu.my/id/eprint/80810/ http://psasir.upm.edu.my/id/eprint/80810/1/FIBER.pdf |