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The authors describe an electrochemical sensor for the determination of 5-hydroxytryptamine (5-HT; serotonin). It is based on the use of platinum nanoparticles (PtNPs) coated with molecularly imprinted silica (MIS). The MIS-coated PtNPs were prepared from 5-HT, PtNPs, phenyltrimethoxysilane and tetraethoxysilane that act as template, support, functional monomer and cross-linker, respectively. The...
A glassy carbon electrode was modified with carbon nanofragments and bismuth oxide, and the resulting electrode (CNF-Bi/GCE) was applied to the voltammetric determination of catechol (CC) in the presence of a large excess (>100-fold) of hydroquinone (HQ). The CNF-Bi was synthesized by anchoring bismuth oxide on CNFs in a hydrothermal and calcining process. Compared to CNF-modified GCE and bare...
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