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Bifunctional Sensor of Nitric Oxide and Oxygen Based on Hematite Nanotubes Embedded in Chitosan Matrix by Jingming Gong; Lianyi Wang; Kun Zhao; Dandan Song; Lizhi Zhang is a Engineering article available to read on EtoBox.

What is Bifunctional Sensor of Nitric Oxide and Oxygen Based on Hematite Nanotubes Embedded in Chitosan Matrix about?

A novel hybrid bifunctional sensing platform for simultaneous determination of NO and O 2 has been developed, whereby hematite nanotubes are immobilized into the chitosan matrix onto a gold electrode (labeled as HeNTs-Chi/Au). The HeNTs distributed in porous-structured chitosan matrix not only offer abundant active sites for bifunctional sensing of NO and O 2 , but also facilitate oxidation of NO and reduction of O 2 dramatically. Straight calibration curves are achieved in analyte concentration ranges of 5.0 Â 10 À8 to 1.25 Â 10 À6 mol L À1 for NO and 2.5 Â 10 À7 to 6.0 Â 10 À6 mol L À1 for O 2 . Also, the detection limits are low of 8.0 Â 10 À9 mol L À1 for NO and 5.0 Â 10 À8 mol L À1 for O 2 . Such an efficient bifunctional sensor for NO and O 2 offers great potential in quantitation of NO levels in biological and medical systems, since NO level is highly regulated by various reactive oxygen species.

Who reads Bifunctional Sensor of Nitric Oxide and Oxygen Based on Hematite Nanotubes Embedded in Chitosan Matrix?

Author

Jingming Gong; Lianyi Wang; Kun Zhao; Dandan Song; Lizhi Zhang

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 1388-2481)

Published

2008

Language

EN

Field

Engineering (Physical Sciences)