Fabrication and characterization of PANI-Ag-Co nanocomposite thin films as microbial sensor for E. Coli detection

Mohammad Naim Norshafadzila, Huda Abdullah, Noor Azmy Noor Azwen, Ali Umar Akrajas, Aidil Abdul Hamid, Shaari Sahbudin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Conducting polymers are excellent host materials for nanoparticles of metals and semiconductors. PANI-Ag-Co nanocomposite was prepared by chemical oxidative polymerization of aniline monomer in the presence of nitric acid. PANI-Ag-Co thin films were deposited on the glass substrate using spin-coating technique. The films were characterized by UV-Vis spectroscopy, XRD, AFM and TEM to analyze the internal structure and surface morphology. The performance of the sensor was conducted using I–V measurement to obtain the changes in the current before and after the incubation with E. coli bacteria in water. In UV-visible absorbance bands, a single peak appears at 421.6 nm in each band indicating the Ag-Co alloy nanoparticles were formed. The peaks in the XRD patterns show the crystals are oriented along (111) planes for Ag while (200) plane for Co. AFM images indicate the surface roughness of the PANI-Ag-Co films decreases when the concentration of Co increased. TEM image shows spherical shaped of Ag-Co alloy particles with diameter in the range of 6 – 10 nm. I–V measurements show that the current change of the films increased when incubated in E. coli. The sensitivity on E. coli increases as we increase the Co concentration. PANI-Ag-Co nanocomposite thin films can be explored further for microbial sensor application in future study.

Original languageEnglish
Title of host publicationMaterials Science Forum
PublisherTrans Tech Publications Ltd
Pages641-649
Number of pages9
Volume846
ISBN (Print)9783038357520
DOIs
Publication statusPublished - 2016
Event28th Regional Conference on Solid State Science and Technology, RCSSST 2014 - Cameron Highlands, Pahang, Malaysia
Duration: 25 Nov 201427 Nov 2014

Publication series

NameMaterials Science Forum
Volume846
ISSN (Print)02555476

Other

Other28th Regional Conference on Solid State Science and Technology, RCSSST 2014
CountryMalaysia
CityCameron Highlands, Pahang
Period25/11/1427/11/14

Fingerprint

Nanocomposite films
Escherichia coli
nanocomposites
Fabrication
Thin films
fabrication
sensors
Sensors
thin films
atomic force microscopy
Nanoparticles
Transmission electron microscopy
Nitric Acid
nanoparticles
transmission electron microscopy
Coating techniques
Conducting polymers
Spin coating
nitric acid
conducting polymers

Keywords

  • Ag-Co
  • E. coli
  • Microbial sensor
  • Nanocomposite
  • Polyaniline
  • Thin films

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Norshafadzila, M. N., Abdullah, H., Noor Azwen, N. A., Akrajas, A. U., Abdul Hamid, A., & Sahbudin, S. (2016). Fabrication and characterization of PANI-Ag-Co nanocomposite thin films as microbial sensor for E. Coli detection. In Materials Science Forum (Vol. 846, pp. 641-649). (Materials Science Forum; Vol. 846). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.846.641

Fabrication and characterization of PANI-Ag-Co nanocomposite thin films as microbial sensor for E. Coli detection. / Norshafadzila, Mohammad Naim; Abdullah, Huda; Noor Azwen, Noor Azmy; Akrajas, Ali Umar; Abdul Hamid, Aidil; Sahbudin, Shaari.

Materials Science Forum. Vol. 846 Trans Tech Publications Ltd, 2016. p. 641-649 (Materials Science Forum; Vol. 846).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Norshafadzila, MN, Abdullah, H, Noor Azwen, NA, Akrajas, AU, Abdul Hamid, A & Sahbudin, S 2016, Fabrication and characterization of PANI-Ag-Co nanocomposite thin films as microbial sensor for E. Coli detection. in Materials Science Forum. vol. 846, Materials Science Forum, vol. 846, Trans Tech Publications Ltd, pp. 641-649, 28th Regional Conference on Solid State Science and Technology, RCSSST 2014, Cameron Highlands, Pahang, Malaysia, 25/11/14. https://doi.org/10.4028/www.scientific.net/MSF.846.641
Norshafadzila MN, Abdullah H, Noor Azwen NA, Akrajas AU, Abdul Hamid A, Sahbudin S. Fabrication and characterization of PANI-Ag-Co nanocomposite thin films as microbial sensor for E. Coli detection. In Materials Science Forum. Vol. 846. Trans Tech Publications Ltd. 2016. p. 641-649. (Materials Science Forum). https://doi.org/10.4028/www.scientific.net/MSF.846.641
Norshafadzila, Mohammad Naim ; Abdullah, Huda ; Noor Azwen, Noor Azmy ; Akrajas, Ali Umar ; Abdul Hamid, Aidil ; Sahbudin, Shaari. / Fabrication and characterization of PANI-Ag-Co nanocomposite thin films as microbial sensor for E. Coli detection. Materials Science Forum. Vol. 846 Trans Tech Publications Ltd, 2016. pp. 641-649 (Materials Science Forum).
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