کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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180898 | 459391 | 2009 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: High performance bioanode based on direct electron transfer of fructose dehydrogenase at gold nanoparticle-modified electrodes High performance bioanode based on direct electron transfer of fructose dehydrogenase at gold nanoparticle-modified electrodes](/preview/png/180898.png)
The direct electron transfer reaction of fructose dehydrogenase (FDH) from Gluconobacter sp. on alkanethiol-modified gold nanoparticles (AuNPs) was examined. AuNP-modified electrodes were simply fabricated by depositing citrate-reduced gold nanoparticles onto a gold electrode and carbon fiber paper and then covering the surface with a self-assembled monolayer of alkanethiols. The immobilization of AuNPs provided a large effective surface area for the adsorption of FDH. Catalytic oxidation currents based on the direct electron transfer reaction of FDH were observed from a potential about −100 mV (vs. Ag/AgCl, 3 M NaCl) in the presence of d-fructose without a mediator. The current density reached as high as 14.3 ± 0.93 mA/cm2 (at +500 mV), which was achieved in the presence of 200 mM d-fructose by immobilization of FDH on 2-mercaptoethanol-modified AuNP/carbon fiber paper electrodes.
Journal: Electrochemistry Communications - Volume 11, Issue 3, March 2009, Pages 668–671