Cargando…
Thermal Annealing Effect on Structural, Morphological, and Sensor Performance of PANI-Ag-Fe Based Electrochemical E. coli Sensor for Environmental Monitoring
PANI-Ag-Fe nanocomposite thin films based electrochemical E. coli sensor was developed with thermal annealing. PANI-Ag-Fe nanocomposite thin films were prepared by oxidative polymerization of aniline and the reduction process of Ag-Fe bimetallic compound with the presence of nitric acid and PVA. The...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Hindawi Publishing Corporation
2015
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4452879/ https://www.ncbi.nlm.nih.gov/pubmed/26078996 http://dx.doi.org/10.1155/2015/696521 |
_version_ | 1782374385189912576 |
---|---|
author | Mohammad Naim, Norshafadzila Abdullah, H. Umar, Akrajas Ali Abdul Hamid, Aidil Shaari, Sahbudin |
author_facet | Mohammad Naim, Norshafadzila Abdullah, H. Umar, Akrajas Ali Abdul Hamid, Aidil Shaari, Sahbudin |
author_sort | Mohammad Naim, Norshafadzila |
collection | PubMed |
description | PANI-Ag-Fe nanocomposite thin films based electrochemical E. coli sensor was developed with thermal annealing. PANI-Ag-Fe nanocomposite thin films were prepared by oxidative polymerization of aniline and the reduction process of Ag-Fe bimetallic compound with the presence of nitric acid and PVA. The films were deposited on glass substrate using spin-coating technique before they were annealed at 300°C. The films were characterized using XRD, UV-Vis spectroscopy, and FESEM to study the structural and morphological properties. The electrochemical sensor performance was conducted using I-V measurement electrochemical impedance spectroscopy (EIS). The sensitivity upon the presence of E. coli was measured in clean water and E. coli solution. From XRD analysis, the crystallite sizes were found to become larger for the samples after annealing. UV-Vis absorption bands for samples before and after annealing show maximum absorbance peaks at around 422 nm–424 nm and 426 nm–464 nm, respectively. FESEM images show the diameter size for nanospherical Ag-Fe alloy particles increases after annealing. The sensor performance of PANI-Ag-Fe nanocomposite thin films upon E. coli cells in liquid medium indicates the sensitivity increases after annealing. |
format | Online Article Text |
id | pubmed-4452879 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Hindawi Publishing Corporation |
record_format | MEDLINE/PubMed |
spelling | pubmed-44528792015-06-15 Thermal Annealing Effect on Structural, Morphological, and Sensor Performance of PANI-Ag-Fe Based Electrochemical E. coli Sensor for Environmental Monitoring Mohammad Naim, Norshafadzila Abdullah, H. Umar, Akrajas Ali Abdul Hamid, Aidil Shaari, Sahbudin ScientificWorldJournal Research Article PANI-Ag-Fe nanocomposite thin films based electrochemical E. coli sensor was developed with thermal annealing. PANI-Ag-Fe nanocomposite thin films were prepared by oxidative polymerization of aniline and the reduction process of Ag-Fe bimetallic compound with the presence of nitric acid and PVA. The films were deposited on glass substrate using spin-coating technique before they were annealed at 300°C. The films were characterized using XRD, UV-Vis spectroscopy, and FESEM to study the structural and morphological properties. The electrochemical sensor performance was conducted using I-V measurement electrochemical impedance spectroscopy (EIS). The sensitivity upon the presence of E. coli was measured in clean water and E. coli solution. From XRD analysis, the crystallite sizes were found to become larger for the samples after annealing. UV-Vis absorption bands for samples before and after annealing show maximum absorbance peaks at around 422 nm–424 nm and 426 nm–464 nm, respectively. FESEM images show the diameter size for nanospherical Ag-Fe alloy particles increases after annealing. The sensor performance of PANI-Ag-Fe nanocomposite thin films upon E. coli cells in liquid medium indicates the sensitivity increases after annealing. Hindawi Publishing Corporation 2015 2015-05-20 /pmc/articles/PMC4452879/ /pubmed/26078996 http://dx.doi.org/10.1155/2015/696521 Text en Copyright © 2015 Norshafadzila Mohammad Naim et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Mohammad Naim, Norshafadzila Abdullah, H. Umar, Akrajas Ali Abdul Hamid, Aidil Shaari, Sahbudin Thermal Annealing Effect on Structural, Morphological, and Sensor Performance of PANI-Ag-Fe Based Electrochemical E. coli Sensor for Environmental Monitoring |
title | Thermal Annealing Effect on Structural, Morphological, and Sensor Performance of PANI-Ag-Fe Based Electrochemical E. coli Sensor for Environmental Monitoring |
title_full | Thermal Annealing Effect on Structural, Morphological, and Sensor Performance of PANI-Ag-Fe Based Electrochemical E. coli Sensor for Environmental Monitoring |
title_fullStr | Thermal Annealing Effect on Structural, Morphological, and Sensor Performance of PANI-Ag-Fe Based Electrochemical E. coli Sensor for Environmental Monitoring |
title_full_unstemmed | Thermal Annealing Effect on Structural, Morphological, and Sensor Performance of PANI-Ag-Fe Based Electrochemical E. coli Sensor for Environmental Monitoring |
title_short | Thermal Annealing Effect on Structural, Morphological, and Sensor Performance of PANI-Ag-Fe Based Electrochemical E. coli Sensor for Environmental Monitoring |
title_sort | thermal annealing effect on structural, morphological, and sensor performance of pani-ag-fe based electrochemical e. coli sensor for environmental monitoring |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4452879/ https://www.ncbi.nlm.nih.gov/pubmed/26078996 http://dx.doi.org/10.1155/2015/696521 |
work_keys_str_mv | AT mohammadnaimnorshafadzila thermalannealingeffectonstructuralmorphologicalandsensorperformanceofpaniagfebasedelectrochemicalecolisensorforenvironmentalmonitoring AT abdullahh thermalannealingeffectonstructuralmorphologicalandsensorperformanceofpaniagfebasedelectrochemicalecolisensorforenvironmentalmonitoring AT umarakrajasali thermalannealingeffectonstructuralmorphologicalandsensorperformanceofpaniagfebasedelectrochemicalecolisensorforenvironmentalmonitoring AT abdulhamidaidil thermalannealingeffectonstructuralmorphologicalandsensorperformanceofpaniagfebasedelectrochemicalecolisensorforenvironmentalmonitoring AT shaarisahbudin thermalannealingeffectonstructuralmorphologicalandsensorperformanceofpaniagfebasedelectrochemicalecolisensorforenvironmentalmonitoring |