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Single cell imprinting on the surface of Ag-ZnO bimetallic nanoparticle modified graphene oxide sheets for targeted detection, removal and photothermal killing of E. Coli
Indian School Mines, India.
Indian School Mines, India.
Linköping University, Department of Physics, Chemistry and Biology, Biosensors and Bioelectronics. Linköping University, Faculty of Science & Engineering.
Indian School Mines, India.
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2017 (English)In: Biosensors & bioelectronics, ISSN 0956-5663, E-ISSN 1873-4235, Vol. 89, 620-626 p.Article in journal (Refereed) Published
Abstract [en]

A very cost-effective, fast, sensitive and specific imprinted polymer modified electrochemical sensor for the targeted detection, removal and destruction of Escherichia coli bacteria was developed onto the surface of Ag-ZnO bimetallic nanoparticle and graphene oxide nanocomposite. The nanocomposite played a dual role in this work, as a platform for imprinting of bacteria as well as a participated in their laser-light induced photo killing. In terms of sensing, our proposed sensor can detect E. Coli as few as 10 CFU mL(-1) and capture 98% of bacterial cells from their very high concentrated solution (10(5) CFU mL(-1)). Similarly to the quantitative detection, we have also investigated the quantitative destruction of E. Coli and found that 16.0 cm(2) area of polymer modified glass plate is sufficient enough to kill 10(5) CFU mL(-1) in the small time span of 5 minutes. The obtained results suggest that our proposed sensor have potential to serve as a promising candidate for specific and quantitative detection, removal as well as the destruction of a variety of bacterial pathogens. (C) 2015 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
ELSEVIER ADVANCED TECHNOLOGY , 2017. Vol. 89, 620-626 p.
Keyword [en]
Bacteria sensing; Removal; Photothermal killing; Imprinted polymer; GO-Ag@ZnO nanocomposite
National Category
Analytical Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-134204DOI: 10.1016/j.bios.2015.12.085ISI: 000391077000066PubMedID: 26754865OAI: oai:DiVA.org:liu-134204DiVA: diva2:1069848
Note

Funding Agencies|DST; BRNS; ISM [SB/FT/CS-155/2012, FRS/43/2013-2014/AC, 34/14/21/2014-BRNS, SR/FTP/PS-157/2011, FRS/34/2012-2013/APH]

Available from: 2017-01-30 Created: 2017-01-29 Last updated: 2017-11-29

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