relation: https://khub.utp.edu.my/scholars/13819/ title: Fabrication of ammonia gas sensor based on polyaniline/mussel shell composite creator: Albar, M.M.J. creator: Ramli, N. creator: Jamion, N.A. creator: Baharin, S.N.A. creator: Marimuthu, T. creator: Sambasevam, K.P. description: Commercial polyaniline/mussel shell (cPANI/MS) and lab-synthesized polyaniline/mussel shell (sPANI/MS) composites were prepared in order to study the sensor performances in ammonia gas detection. Both cPANI/MS and sPANI/MS were characterized using Fourier transform infrared (FTIR) and Ultraviolet-Visible (UV-Vis) spectroscopy techniques. FTIR confirmed the main characteristic peaks of PANI at ~1462 cm-1 and ~1599 cm-1 which indicates benzenoid and quinoid ring, respectively. Besides that, the peaks in the range of 1417-1453 cm-1 indicates the presence of calcium carbonate within the PANI matrix. UV-Vis spectra further confirmed both PANI composites are in the doped state by exhibiting the characteristic peak at ~790-820 nm. Sensor performance of cPANI/MS was studied in different concentrations of ammonia gas (10-100 ppm). In conclusion, it is possible to prepare waste mussel shells as a composite material with PANI in order to apply it as a gas sensor. © 2020 Akademi Sains Malaysia. publisher: Akademi Sains Malaysia date: 2020 type: Article type: PeerReviewed identifier: Albar, M.M.J. and Ramli, N. and Jamion, N.A. and Baharin, S.N.A. and Marimuthu, T. and Sambasevam, K.P. (2020) Fabrication of ammonia gas sensor based on polyaniline/mussel shell composite. ASM Science Journal, 13 (Specia). pp. 105-110. ISSN 18236782 relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85087768754&partnerID=40&md5=cad20fe19e4e0312b7fe75790ed24801