期刊
MICROCHIMICA ACTA
卷 173, 期 1-2, 页码 59-64出版社
SPRINGER WIEN
DOI: 10.1007/s00604-010-0527-6
关键词
L-Tyrosine; Copper oxide; Nanoparticles; Modified electrode; Electrocatalysis
We report on the electrochemical formation of copper oxide nanoparticles (CuO-NPs) at a carbon ceramic electrode (CCE) as a highly-porous substrate. A copper film was deposited on the surface of the CCE and derivatized in situ to give CuO-NPs by potential cycling between -0.8 and 0.35 V in strongly alkaline solution. The electrode was characterized by scanning electron microscopy and cyclic voltammetry. The CuO-NPs exhibited excellent electrocatalytic activity toward the oxidation of L-tyrosine (L-Tyr) in responding linearly in the 2 to 1,350 mu M concentration range, an associated detection limit (S/N = 3) of 160 nM, and a sensitivity of 0.61 A M-1 cm(-2).
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