Synthesis of PtNPs/MWCNT Functionalized with 4-Mercaptophenylboronic Acid for an Electrochemical Sensor of Fructose.

Platinum nanoparticles (PtNPs) on multi-wall carbon nanotubes (MWCNT) were functionalized with 4-mercaptophenylboronic acid (4MPB) for electrochemical detection of fructose. The composite nanomaterial was characterized by physicochemical techniques such as TGA and TEM, and electrochemically using the [Fe(CN)₆]^3-/4- as channel ion. Experimental values indicate that this sensor presents high sensitivity and selectivity for electrochemical detection of fructose with the sensitivity of 2.794 x 10^-5 A mM^-1 in a range of 2.5 to 10 mM using cyclic voltammetry and sensitivity 8.65 Ω mM^-1 in range of 0.5 to 10 mM using electrochemical impedance spectroscopy. [ABSTRACT FROM AUTHOR]