Mohamad Ahad, Irma Zulayka and Harun, Sulaiman Wadi and Gan, Seng Neon and Phang, Sook Wai (2018) Polyaniline (PAni) optical sensor in chloroform detection. Sensors and Actuators B: Chemical, 261. pp. 97-105. ISSN 0925-4005, DOI https://doi.org/10.1016/j.snb.2018.01.082.
Full text not available from this repository.Abstract
A novel Fiber Bragg grating (FBG) coated with PAni film was used as a sensitive optical sensor for chloroform detection. In this study, the effect of synthesis parameters such as different dopant ratios (Ani: AOT = 5: 3, 5: 5 and 5: 7) and different polymerization temperatures (–5 °C, 0 °C and 25 °C) toward the efficiency of sensors were being investigated. Among the PAnis, PAni 5: 5 (0 °C) possessed the highest conductivity (1.627 × 10−2 S/cm) and the best efficiency (sensitivity = 0.0015) with response time of 7 s. The mechanism during chloroform detection was studied through Fourier Transform Infrared (FTIR) and Ultraviolet-visible (UV–vis) analysis, and the results showed clearly the physical interaction of the partial negative charge (Clδ−) of chloroform with the partial positive charge (NHδ+) on PAni chain. Besides, the sensor performance such as recyclability, selectivity, limit of detection (LOD), limit of quantitation (LOQ) and real sample analysis was studied in details in this study.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Polyaniline; AOT dopant ratio; FBG; Chloroform; Bragg wavelength shift |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Engineering Faculty of Science > Department of Chemistry |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 21 May 2019 06:28 |
| Last Modified: | 21 May 2019 06:28 |
| URI: | http://eprints.um.edu.my/id/eprint/21269 |
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