Gold Nanoparticles‐β‐Cyclodextrin‐Chitosan‐Graphene Modified Glassy Carbon Electrode for Ultrasensitive Detection of Dopamine and Uric Acid |
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| Authors: | Jian Tang Lingling Zhang Yun Liu Jie Zhou Guangqiang Han Weihua Tang |
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| Institution: | 1. School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P.?R. China;2. College of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P.?R. China tel: +86‐25‐8431‐7311;3. fax: +86‐25‐8431‐7311 |
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| Abstract: | The nanocomposite (denoted as GR‐AuNPs‐CD‐CS) of graphene (GR), gold nanoparticles (AuNPs), chitosan (CS) and β‐cyclodextrin (β‐CD) was prepared to modify a glassy carbon electrode. The as‐modified electrode was explored for the ultrasensitive detection of dopamine (DA) and uric acid (UA). The modified electrode demonstrated linearly increased current response in the concentration range of 0.1–120 µm for DA and 0.05–70 µm for UA, with so far the best detection limit for DA and UA. Good stability and repeatability were further demonstrated for the as‐made sensor. |
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| Keywords: | Cyclodextrin Graphene Dopamine Uric acid |
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