کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7228989 | 1470915 | 2018 | 24 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electroactive Au@Ag nanoparticles driven electrochemical sensor for endogenous H2S detection
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this work, a novel and facile electrochemical sensor is reported for the highly selective and sensitive detection of dissolved hydrogen sulfide (H2S), attributing to the redox reaction between Au@Ag core-shell nanoparticles (Au@Ag NPs) and H2S. Electroactive Au@Ag NPs not only possess excellent conductivity, but exhibit great electrochemical reactivity at 0.26â¯V due to the electrochemical oxidation from Ag° to Ag+. In the presence of H2S, the Ag shell of Au@Ag NPs can be oxidized to Ag2S, resulting in the decrease of differential pulse voltammetry (DPV) peak at 0.26â¯V. The electrochemical sensor exhibits a wide linear response range from 0.1â¯nM to 500â¯nM. The limit of detection (LOD) for H2S is as low as 0.04â¯nM. The developed sensor shows significant prospects in the study of pathological processes related to the mechanism of H2S production.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biosensors and Bioelectronics - Volume 117, 15 October 2018, Pages 53-59
Journal: Biosensors and Bioelectronics - Volume 117, 15 October 2018, Pages 53-59
نویسندگان
Yuan Zhao, Yaxin Yang, Linyan Cui, Fangjie Zheng, Qijun Song,