کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5009125 1462039 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced TA determination on 3D flower-like ZnO-Pt nanocomposites under ultraviolet light illumination
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Enhanced TA determination on 3D flower-like ZnO-Pt nanocomposites under ultraviolet light illumination
چکیده انگلیسی


- UV light-assisted electrochemical determination of TA on ZnO-Pt/GCE.
- 3D flower like ZnO-Pt material was successfully synthesized by one-pot hydrolysis method.
- A wide linear range of 0.04-72.34 μM with a low detection limit of 0.02 μM was obtained.

Flower-like ZnO-Pt materials with three-dimensional architectures were synthesized by one-pot method, and a novel tannic acid (TA) analytical method based on flower-like ZnO-Pt modified glassy carbon electrode (ZnO-Pt/GCE) was also developed. Due to the introduction of metal Pt on ZnO, the as-prepared electrode exhibited good conductivity and gave rise to a significant increase in the photocurrent density under UV light illumination, confirming an enhanced charge transfer speed and a well combination between exited electron-hole pairs of ZnO. For the analysis of TA, differential pulse voltammetry (DPV) was applied to evaluate the photoelectrochemical performance on ZnO-Pt/GCE, and a wide linear range of 0.04-72.34 μM with a low detection limit of 0.02 μM (at S/N = 3) was obtained ultimately. The oxidation mechanism of tannic acid in different routes was also proposed and discussed. Moreover, the prepared electrode displayed high stability and selectivity toward the determination of tannic acid. These excellent results presented here make the ultraviolet assisted electrochemical determination a promising method in sensing.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 252, November 2017, Pages 717-724
نویسندگان
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