Chemical sensor for hydrazine detection using polyaniline thin film; [Sensor kimia untuk mengesan hidrazin dengan menggunakan polyanilina berbentuk filem nipis]

• Published in: Malaysian Journal of Analytical Sciences
• Main Author: Sambasevam K.P.; Mohamad S.; Phang S.-W.
• Format: Article
• Language: English
• Published: Malaysian Society of Analytical Sciences 2017
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85028541723&doi=10.17576%2fmjas-2017-2104-01&partnerID=40&md5=4d59f07d4da8581ef17769cd6b3123cd

Polyaniline (PANI) doped with dioctyl sodium sulfosuccinate (AOT) was prepared by chemical oxidative polymerization method. This PANI thin film was used as an effective chemical sensor at room temperature for different concentrations of hydrazine (10, 100, 1000 and 10000 ppm) detection. The PANI chemical sensor has shown a good recyclability up to 10 cycles with 2 minutes response time and immediate recovery time. The sensor response was proved by red-shift of the UV-Vis at 780 nm which indicates the transformation of emeraldine salt (ES, conducting state) to leucoemeraldine salt (LES, non-conducting state) of PANI. Besides that, the intensity ratio of IQuinoid/IBenzenoid at FTIR spectroscopy can explicit the predominating benzenoid species that formed as a result of ES interaction with hydrazine. In this study, a very simple and inexpensive sensor setup has been successfully developed for hydrazine detection compare to the complicated traditional chemical sensors. © 2017, Malaysian Society of Analytical Sciences. All rights reserved.