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Silver-chitosan nanobiocomposite as urea biosensor
Riphah Int University, Pakistan.
GC University, Pakistan.
GC University, Pakistan.
Riphah Int University, Pakistan.
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2014 (English)In: Optoelectronics and Advanced Materials Rapid Communications, ISSN 1842-6573, E-ISSN 2065-3824, Vol. 8, no 11-12, 1238-1242 p.Article in journal (Refereed) Published
Abstract [en]

Silver nanoparticles (Ag NPs) were synthesized by aqueous chemical growth technique. The above mentioned synthesized materials were characterized by applying scanning electron microscope (SEM) and X-ray diffraction for confirmation of morphological analysis, compositional purity, and crystalline property and emission characteristics as well. In order to fabricate the urea biosensor (potentiometric), a solution of deionized water and chitosan was prepared having Ag NPs. The said solution was dropped on the glass fiber filter having diameter of 2 cm. A wire of copper having thickness of approximately 500 pm was used for the voltage signal to pull out from the said working nanoparticles (NPs). To improve the strength, sensitivity and the quality of the potentiometric urea biosensor, a specific functional surface of Ag NPs was attained by electrostatic restrained of an enzyme (urease) onto the chitosan-Ag (a nanobiocomposite). The potentiometric reaction was measured via electrochemical detection technique. The potentiometric urea biosensor illustrates significant sensibility at room temperature with approximate to 42 mV as per span. Furthermore, the said biosensor showed an appropriate stable response within 7 sec.

Place, publisher, year, edition, pages
NATL INST OPTOELECTRONICS , 2014. Vol. 8, no 11-12, 1238-1242 p.
Keyword [en]
Ag nanoparticles (Ag NPs); Nanobiocomposite; Urea biosensor; Scanning electron microscope (SEM); X-ray diffraction
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-114029ISI: 000347510200047Scopus ID: 2-s2.0-84920496638OAI: oai:DiVA.org:liu-114029DiVA: diva2:786462
Note

Funding Agencies|King Saud University, Deanship of Scientific Research, College of Science Research Center

Available from: 2015-02-05 Created: 2015-02-05 Last updated: 2017-12-05

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Willander, Magnus

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  • apa
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