Graphene Nanosheets Modified Glassy Carbon Electrode as a Highly Sensitive and Selective Voltammetric Sensor for Rutin |
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| Authors: | Haijun Du Jianshan Ye Jiaqi Zhang Xiaodan Huang Chengzhong Yu |
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| Institution: | 1. College of Chemistry and Chemical Engineering, South China University of Technology, Wushan, Guangzhou 510640, P.?R. China tel: 86‐20‐8711?3241, fax: 86‐20‐8711?2906;2. School Chemistry and Environmental Science, Guizhou University for Nationalities , Huaxi, Guiyang 550025, P.?R. China;3. College of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin 300071, P.?R. China;4. Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P.?R. China tel: 86‐21‐5566‐5103, fax: 86‐21‐6564‐1740 |
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| Abstract: | Graphene nanosheets modified glassy carbon electrode (GNs/GCE) was fabricated as voltammetric sensor for rutin with good sensitivity, selectivity and reproducibility. The sensor exhibits an adsorption‐controlled, reversible two‐proton and two electron transfer reaction for the oxidation of rutin with a peak‐to‐peak separation (ΔEp) of 26 mV as revealed by cyclic voltammetry. Moreover, the redox peak current increased about 14 times than that on bare glassy carbon electrode (GCE). The linear response of the sensor is from 1×10?7 to 1×10?5 M with a detection limit of 2.1 × 10?8 M (S/N = 3). The method was successfully applied to determine rutin in tablets with satisfied recovery. |
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| Keywords: | Rutin Graphene nanosheets Electrocatalysis Sensors Stripping differential pulse voltammetry |
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