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Structural Characterization of Graphene Nanosheets for Miniaturization of Potentiometric Urea Lipid Film Based Biosensors
National Technical University of Athens, Greece .
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
National Technical University of Athens, Greece .
University of Athens, Greece .
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2012 (English)In: Electroanalysis, ISSN 1040-0397, E-ISSN 1521-4109, Vol. 24, no 6, 1285-1295 p.Article in journal (Refereed) Published
Abstract [en]

The present article describes a miniaturized potentiometric urea lipid film based biosensor on graphene nanosheets. Structural characterization of graphene nanosheets for miniaturization of potentiometric urea lipid film based biosensors have been studied through atomic force microscopy (AFM) and transmission electron microscopy (TEM) measurements. UV-Vis and Fourrier transform IR (FTIR) spectroscopy have been utilized to study the pre- and postconjugated surfaces of graphene nanosheets. The presented potentiometric urea biosensor exhibits good reproducibility, reusability, selectivity, rapid response times (similar to 4 s), long shelf life and high sensitivity of ca. 70 mV/decade over the urea logarithmic concentration range from 1 x 10(-6) M to 1 x 10(-3) M.

Place, publisher, year, edition, pages
Wiley-VCH Verlag Berlin , 2012. Vol. 24, no 6, 1285-1295 p.
Keyword [en]
Stabilized lipid films; Urea biosensors; Electrochemistry; Graphene nanosheets; Miniaturization
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-79820DOI: 10.1002/elan.201200104ISI: 000304767400006OAI: diva2:544958
Available from: 2012-08-17 Created: 2012-08-14 Last updated: 2014-01-15

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Israr, Muhammad Q.Willander, Magnus
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