Pd nanoparticles/multiwalled carbon nanotubes electrode system for voltammetric sensing of tyrosine.
A facile and quick synthesis of palladium decorated multi-walled carbon nanotubes is presented in this work. The developed protocol allowed a quasi-homogeneous distribution of the metal nanoparticles on the surface of the nanotubes, and a controlled size of the nanoparticles in a range between 3.5 and 4.5 nm. After the characterization of the hybrid nanocomposite a first attempt on a possible application was made. The preliminary test, an ink-like nanocomposite as a modifier on the surface of a carbon screen-printed electrode, was performed in order to detect L-Tyrosine. Preliminary results are promising. A catalytic effect on the oxidation peak of the L-Tyrosine was shown and furthermore a low limit of detection, 1.46 x 10(-10) M, was reached.
Andrea
A
Cipri
Manel
M
Del Valle
D015374:Biosensing Techniques / Q000379:methods*; D055664:Electrochemical Techniques / Q000379:methods*; D004566:Electrodes; D057230:Limit of Detection; D053761:Nanocomposites / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry*; D014443:Tyrosine / Q000032:analysis*
D037742:Nanotubes, Carbon; D014443:Tyrosine; D010165:Palladium