A method based on electrodeposition of reduced graphene oxide on glassy carbon electrode for sensitive detection of theophylline
作者： Fei Cui , Xiaoli Zhang
DOI: 10.1007/S10008-012-1867-4
关键词: Electrochemical gas sensor 、 Electrolyte 、 Graphene 、 Detection limit 、 Scanning electron microscope 、 Oxide 、 Materials science 、 Electrochemistry 、 Electrode 、 Inorganic chemistry
摘要: Graphene nanosheets were directly electrodeposited onto a glassy carbon electrode (GCE) from the electrolyte solution containing graphene oxide (GO); resulting (ED-GO/GCE) was characterized with scanning electron microscopy. A simple and rapid electrochemical method developed for determination of theophylline (TP), based on excellent properties ED-GO film. The result indicated that film-modified GCE exhibited efficient electrocatalytic oxidation TP relatively high sensitivity stability. behavior at ED-GO/GCE investigated in detail. Under optimized conditions, peak current proportional to concentration range 8.0 × 10−7 6.0 10−5 mol L−1 detection limit 1.0 (S/N = 3). proposed successfully applied green tea samples satisfactory results.
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