کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
219271 | 463257 | 2012 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Electrochemical behavior of folic acid in neutral solution on the modified glassy carbon electrode: Platinum nanoparticles doped multi-walled carbon nanotubes with Nafion as adhesive Electrochemical behavior of folic acid in neutral solution on the modified glassy carbon electrode: Platinum nanoparticles doped multi-walled carbon nanotubes with Nafion as adhesive](/preview/png/219271.png)
Platinum nanoparticles (PtNPs) were used in combination with multi-walled carbon nanotubes (MWCNTs) with Nafion as the adhesives for fabricating sensitivity-enhanced electrochemical folic acid (FA) sensor. The modifier, PtNPs doped MWCNTs (PtNPs/MWCNTs), was characterized by transmission electron microscopy (TEM) and electrochemical method, it also showed an excellent character for electrocatalytic oxidization of FA. In addition, the experimental parameters such as pH values, the concentration of PtNPs/MWCNTs and the scan rate were optimized. Due to the fine characteristics of PtNPs/MWCNTs, a good linear relationship between the anodic peak current and FA concentration in the range 2.0 × 10−7–1.0 × 10−4 M was observed. The detection limit of 5.01 × 10−8 M was achieved with the linear correlation coefficient R = 0.9948. The relative standard derivation was 1.9% for 5 × 10−6 M FA in 11 repeated determinations. This modified electrode showed excellent sensitivity and stability for the determination of FA.
► Pt nanoparticles and multi-walled carbon nanotubes mixture as the electrode modified material.
► The modified material dropped directly onto the electrode surface.
► Detected in the neutral environment.
Journal: Journal of Electroanalytical Chemistry - Volumes 677–680, 15 July 2012, Pages 105–112