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We reported on the one-pot synthesis of a ternary hybrid material composed of graphene functionalized with 5,10,15,20-tetrakis (4-sulfonatophenyl) porphyrin, tin oxide, and gold nanoparticles. The composite was deposited on a glassy carbon electrode to give an electrode excellent electrocatalytic activity towards the oxidation of epinephrine (EP). The oxidation peaks for EP and uric acid (UA) occur...
A novel electrochemical biosensor for highly sensitive and selective detection of cysteine based on in situ synthesis of gold nanoparticles (AuNPs)/reduced graphene oxide (RGO) nanocomposites is proposed. Graphene oxide (GO) was reduced by dopamine, and then in situ synthesis of AuNPs by the phenolic hydroxyl groups of dopamine on the RGO surface. The sulphydryl group of cysteine could bind not only...
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