期刊
ELECTROANALYSIS
卷 24, 期 6, 页码 1285-1295出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.201200104
关键词
Stabilized lipid films; Urea biosensors; Electrochemistry; Graphene nanosheets; Miniaturization
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.
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