Influence of HKUST-1 and emeraldine based on the long-term stability of emeraldine salt-coated SP-POF for room temperature optical NH3 gas sensing
A long-term sensitivity performance of conducting polymers and metal-organic frameworks coated on side-polished plastic optical fibre (SP-POF) was presented. SP-POF is an excellent option for potential long-distance and remote gas sensing and monitoring application. The presence of functional groups...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Published: |
Elsevier
2022
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/101896/ |
| _version_ | 1848863659788337152 |
|---|---|
| author | Ismail, Abdul Hadi Yaacob, Mohd Hanif Mahdi, Mohd Adzir Sulaiman, Yusran |
| author_facet | Ismail, Abdul Hadi Yaacob, Mohd Hanif Mahdi, Mohd Adzir Sulaiman, Yusran |
| author_sort | Ismail, Abdul Hadi |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | A long-term sensitivity performance of conducting polymers and metal-organic frameworks coated on side-polished plastic optical fibre (SP-POF) was presented. SP-POF is an excellent option for potential long-distance and remote gas sensing and monitoring application. The presence of functional groups, porosity and surface area of the active materials were validated by Raman, Fourier transform infrared (FT-IR), X-Ray diffraction (XRD) and BET analyses. The sole copper-based metal-organic framework (HKUST-1)-coated SP-POF exhibited a good sensitivity (0.83/vol%) with a response time of 1.54 min. Further, the influence of acid dopants and oxidants on the optical response of doped-polyaniline (the emeraldine salt, ES) to 1% ammonia (NH3) gas was also optimised. Significant influence of HKUST-1 and emeraldine base (EB) on long-term optical NH3 sensitivity of emeraldine salt (ES)-coated SP-POF were related to NH3 desorption rate and affinity of the materials towards atmospheric vapour. ES-EB composite has exhibited higher NH3 sensitivity to the sole ES and ES-(HKUST-1) with minimal loss of sensitivity to a set of high NH3 gas concentrations over 70 days. ES-EB coated SP-POF has exhibited minimal sensitivity loss to NH3 gas throughout the test duration with a 7.8% decrease followed by ES (28.1%) and ES-(HKUST-1) (50.86%). Development of SP-POF coated with ES-EB composite is a viable approach to retain good optical NH3 sensitivity and stability at room temperature with a relative humidity of ~50%. |
| first_indexed | 2025-11-15T13:36:26Z |
| format | Article |
| id | upm-101896 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T13:36:26Z |
| publishDate | 2022 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1018962023-08-18T23:44:19Z http://psasir.upm.edu.my/id/eprint/101896/ Influence of HKUST-1 and emeraldine based on the long-term stability of emeraldine salt-coated SP-POF for room temperature optical NH3 gas sensing Ismail, Abdul Hadi Yaacob, Mohd Hanif Mahdi, Mohd Adzir Sulaiman, Yusran A long-term sensitivity performance of conducting polymers and metal-organic frameworks coated on side-polished plastic optical fibre (SP-POF) was presented. SP-POF is an excellent option for potential long-distance and remote gas sensing and monitoring application. The presence of functional groups, porosity and surface area of the active materials were validated by Raman, Fourier transform infrared (FT-IR), X-Ray diffraction (XRD) and BET analyses. The sole copper-based metal-organic framework (HKUST-1)-coated SP-POF exhibited a good sensitivity (0.83/vol%) with a response time of 1.54 min. Further, the influence of acid dopants and oxidants on the optical response of doped-polyaniline (the emeraldine salt, ES) to 1% ammonia (NH3) gas was also optimised. Significant influence of HKUST-1 and emeraldine base (EB) on long-term optical NH3 sensitivity of emeraldine salt (ES)-coated SP-POF were related to NH3 desorption rate and affinity of the materials towards atmospheric vapour. ES-EB composite has exhibited higher NH3 sensitivity to the sole ES and ES-(HKUST-1) with minimal loss of sensitivity to a set of high NH3 gas concentrations over 70 days. ES-EB coated SP-POF has exhibited minimal sensitivity loss to NH3 gas throughout the test duration with a 7.8% decrease followed by ES (28.1%) and ES-(HKUST-1) (50.86%). Development of SP-POF coated with ES-EB composite is a viable approach to retain good optical NH3 sensitivity and stability at room temperature with a relative humidity of ~50%. Elsevier 2022 Article PeerReviewed Ismail, Abdul Hadi and Yaacob, Mohd Hanif and Mahdi, Mohd Adzir and Sulaiman, Yusran (2022) Influence of HKUST-1 and emeraldine based on the long-term stability of emeraldine salt-coated SP-POF for room temperature optical NH3 gas sensing. Sensors and Actuators A: Physical, 335. art. no. 113395. pp. 1-13. ISSN 0924-4247; ESSN: 1873-3069 https://www.sciencedirect.com/science/article/pii/S0924424722000334 10.1016/j.sna.2022.113395 |
| spellingShingle | Ismail, Abdul Hadi Yaacob, Mohd Hanif Mahdi, Mohd Adzir Sulaiman, Yusran Influence of HKUST-1 and emeraldine based on the long-term stability of emeraldine salt-coated SP-POF for room temperature optical NH3 gas sensing |
| title | Influence of HKUST-1 and emeraldine based on the long-term stability of emeraldine salt-coated SP-POF for room temperature optical NH3 gas sensing |
| title_full | Influence of HKUST-1 and emeraldine based on the long-term stability of emeraldine salt-coated SP-POF for room temperature optical NH3 gas sensing |
| title_fullStr | Influence of HKUST-1 and emeraldine based on the long-term stability of emeraldine salt-coated SP-POF for room temperature optical NH3 gas sensing |
| title_full_unstemmed | Influence of HKUST-1 and emeraldine based on the long-term stability of emeraldine salt-coated SP-POF for room temperature optical NH3 gas sensing |
| title_short | Influence of HKUST-1 and emeraldine based on the long-term stability of emeraldine salt-coated SP-POF for room temperature optical NH3 gas sensing |
| title_sort | influence of hkust-1 and emeraldine based on the long-term stability of emeraldine salt-coated sp-pof for room temperature optical nh3 gas sensing |
| url | http://psasir.upm.edu.my/id/eprint/101896/ http://psasir.upm.edu.my/id/eprint/101896/ http://psasir.upm.edu.my/id/eprint/101896/ |