کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
741869 | 1462081 | 2015 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Self-supported porous CoOOH nanosheet arrays as a non-enzymatic glucose sensor with good reproducibility Self-supported porous CoOOH nanosheet arrays as a non-enzymatic glucose sensor with good reproducibility](/preview/png/741869.png)
• Hierarchical porous CoOOH nanosheet arrays.
• Non-enzymatic glucose sensors with a low detection limit and a high sensitivity.
• Outstanding reusability and reproducibility.
Porous CoOOH nanosheet arrays are constructed on Ti foils by an electrochemical assistant method. The nanosheet arrays exhibit hierarchical porous structures with a specific surface area of 470 m2 g−1. The as-prepared CoOOH nanosheet arrays are used for glucose detection as a non-enzymatic sensor. The amperometric detection of glucose is carried out at 0.52 V (versus Ag/AgCl). The amperometric signals are linearly proportional to glucose concentration from 3 μM to 1.109 mM (R = 0.995), showing a low detection limit (S/N = 3) of 1.37 μM and a high sensitivity of 526.8 μA mM−1 cm−2. The high sensitivity towards glucose is mainly attributed to the freestanding and self-supported features of hierarchical porous CoOOH nanosheet arrays on a conducting substrate. The most attractive feature of the array electrodes is the reproducibility, which helps the relative standard deviation of the response currents to glucose from five electrodes is 3.21%.
Journal: Sensors and Actuators B: Chemical - Volume 210, April 2015, Pages 190–196