Development of a chemiresistor sensor based on polyaniline (PANI) nanofibers for detection of ammonia

Nanostructured conducting polymers have received great attention due to their unique properties and promising applications in nanomaterials and nanotechnology. Among them, nanostructured polyaniline (PANI) has been extensively studied due to its ease of synthesis, excellent conductivity, environment...

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Format:	Thesis
Language:	English
Subjects:	Polyanilines Nanofibers Ammonia Nanostructured polyaniline (PANI) Chemiresistor sensor
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72771/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72771/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72771/4/Zulkhairi.pdf
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spelling	my-unimap-727712023-02-22T06:36:55Z Development of a chemiresistor sensor based on polyaniline (PANI) nanofibers for detection of ammonia Mohd Noor, Ahmad, Dr. Nanostructured conducting polymers have received great attention due to their unique properties and promising applications in nanomaterials and nanotechnology. Among them, nanostructured polyaniline (PANI) has been extensively studied due to its ease of synthesis, excellent conductivity, environmental stability, large surface area, and highly reversible redox properties. This study reports a development of a chemiresistor sensor based on PANI nanofibers for ammonia detection. The studies are divided into two parts, which are the preparation of PANI nanofibers at various parameters and the development of chemiresistor sensor for the detection of ammonia. The polymerization time, chemical structure, surface morphology, and electrical properties of the synthesized PANI nanofibers were characterized using digital watch, FTIR, UV-Vis, FESEM, SEM, and 4-point probe, respectively. The preparation of PANI through interfacial (IP-PANI) and rapid mixing polymerization (RP-PANI) give not significant difference except the polymerization time which was 390 and 300s, respectively. FTIR spectra analysis was corresponded to well-doped PANI with the existence of peaks at 3286, 1580, 1490, 1218, 1146 and 620 cm-1, respectively, which are related to N-H, C=C, C-N, in-plane C-H, and out-plane C-H functional group. UV-Vis spectra of the PANI nanofibers showed that three band transitions were appeared at 340, 420, and 814 nm, respectively, which refered to π-π, polaron-π, and localized polaron band while the average diameter size of PANI nanofibers for both methods was ~ 70nm. The effect of hydrochloric acid (HCl) concentration and ammonium persulfate/aniline (APS/ANI) molar ratio on PANI nanofibers synthesized by rapid mixing polymerization were also studied. Universiti Malaysia Perlis (UniMAP) Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/72771 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72771/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72771/1/Page%201-24.pdf 6ae170c0d3b11701bd12a36c95a72466 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72771/2/Full%20text.pdf d21020d27eaf68f06c818348fe37df6e http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72771/4/Zulkhairi.pdf 5864f57e10538898e6b9a2d909155cf0 Universiti Malaysia Perlis (UniMAP) Polyanilines Nanofibers Ammonia Nanostructured polyaniline (PANI) Chemiresistor sensor School of Materials Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
advisor	Mohd Noor, Ahmad, Dr.
topic	Polyanilines Nanofibers Ammonia Nanostructured polyaniline (PANI) Chemiresistor sensor
spellingShingle	Polyanilines Nanofibers Ammonia Nanostructured polyaniline (PANI) Chemiresistor sensor Development of a chemiresistor sensor based on polyaniline (PANI) nanofibers for detection of ammonia
description	Nanostructured conducting polymers have received great attention due to their unique properties and promising applications in nanomaterials and nanotechnology. Among them, nanostructured polyaniline (PANI) has been extensively studied due to its ease of synthesis, excellent conductivity, environmental stability, large surface area, and highly reversible redox properties. This study reports a development of a chemiresistor sensor based on PANI nanofibers for ammonia detection. The studies are divided into two parts, which are the preparation of PANI nanofibers at various parameters and the development of chemiresistor sensor for the detection of ammonia. The polymerization time, chemical structure, surface morphology, and electrical properties of the synthesized PANI nanofibers were characterized using digital watch, FTIR, UV-Vis, FESEM, SEM, and 4-point probe, respectively. The preparation of PANI through interfacial (IP-PANI) and rapid mixing polymerization (RP-PANI) give not significant difference except the polymerization time which was 390 and 300s, respectively. FTIR spectra analysis was corresponded to well-doped PANI with the existence of peaks at 3286, 1580, 1490, 1218, 1146 and 620 cm-1, respectively, which are related to N-H, C=C, C-N, in-plane C-H, and out-plane C-H functional group. UV-Vis spectra of the PANI nanofibers showed that three band transitions were appeared at 340, 420, and 814 nm, respectively, which refered to π-π, polaron-π, and localized polaron band while the average diameter size of PANI nanofibers for both methods was ~ 70nm. The effect of hydrochloric acid (HCl) concentration and ammonium persulfate/aniline (APS/ANI) molar ratio on PANI nanofibers synthesized by rapid mixing polymerization were also studied.
format	Thesis
title	Development of a chemiresistor sensor based on polyaniline (PANI) nanofibers for detection of ammonia
title_short	Development of a chemiresistor sensor based on polyaniline (PANI) nanofibers for detection of ammonia
title_full	Development of a chemiresistor sensor based on polyaniline (PANI) nanofibers for detection of ammonia
title_fullStr	Development of a chemiresistor sensor based on polyaniline (PANI) nanofibers for detection of ammonia
title_full_unstemmed	Development of a chemiresistor sensor based on polyaniline (PANI) nanofibers for detection of ammonia
title_sort	development of a chemiresistor sensor based on polyaniline (pani) nanofibers for detection of ammonia
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Materials Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72771/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72771/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72771/4/Zulkhairi.pdf
_version_	1776104228231577600

Development of a chemiresistor sensor based on polyaniline (PANI) nanofibers for detection of ammonia

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