دورية أكاديمية
Fabrication of Au Nanoparticle-Decorated MoS2 Nanoslices as Efficient Electrocatalysts for Electrochemical Detection of Dopamine
العنوان: | Fabrication of Au Nanoparticle-Decorated MoS2 Nanoslices as Efficient Electrocatalysts for Electrochemical Detection of Dopamine |
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المؤلفون: | Huaiyin Chen, Huaijin Chen, Ruoyu Hong |
المصدر: | Catalysts, Vol 9, Iss 8, p 653 (2019) |
بيانات النشر: | MDPI AG, 2019. |
سنة النشر: | 2019 |
المجموعة: | LCC:Chemical technology LCC:Chemistry |
مصطلحات موضوعية: | dopamine, MoS2, AuNPs, electrocatalyst, sensor, Chemical technology, TP1-1185, Chemistry, QD1-999 |
الوصف: | Herein, MoS2 nanoslices were simply prepared by using ultrasonic treatment, and were further decorated with Au nanoparticles (AuNPs) through an electrodeposition process to obtain the MoS2/Au nanocomposites. The obtained nanocomposites display synergetic electrocatalytic effect for the oxidation of dopamine due to the large surface area and two-dimensional structure of the MoS2 nanoslices, combining with the high catalytic activity and good conductivity of AuNPs. An electrochemical sensor was constructed based on MoS2/Au-modified carbon paste electrode, for sensitive and quantitative determination of dopamine. The prepared electrochemical sensor proves excellent analytical performances: very high sensitivity, wide linear ranges (0.5−300 μM), and low detection limit (76 nM). Moreover, the dopamine sensor also displays high selectivity, good reproducibility and stability, and can be used in real sample analysis. The method of fabricating high-efficiency electrocatalysts and electrochemical sensors proposed in this study provides a good reference for developing more functionalized nanocomposites and for extending practical applications. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English |
تدمد: | 2073-4344 |
Relation: | https://www.mdpi.com/2073-4344/9/8/653; https://doaj.org/toc/2073-4344 |
DOI: | 10.3390/catal9080653 |
URL الوصول: | https://doaj.org/article/a389f9ed016640d68b54671615015201 |
رقم الأكسشن: | edsdoj.389f9ed016640d68b54671615015201 |
قاعدة البيانات: | Directory of Open Access Journals |
تدمد: | 20734344 |
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DOI: | 10.3390/catal9080653 |