ANALYTICAL APPLICATIONS OF Cu@PtPd/C NANOPARTICLES FOR THE QUANTIFICATION OF HYDROGEN PEROXIDE

GUTIERREZ F. A; GIORDANA I. S., .; FUERTES V. C; MONTEMERLO A.; SIEBEN J. M; ALVAREZ A.E; RUBIANES M. D.; RIVAS G. A

MICROCHEMICAL JOURNAL

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2018

0026-265X

his work reports a non-enzymatic amperometricsensor for hydrogen peroxide based on the use of a glassy carbon composite electrode(GCPE) modified with core-shell Cu@PtPd/C nanoparticles. Cu@PtPd/C presentsan importantelectrocatalytic activity towards hydrogen peroxide reduction. The comparison of the sensitivities and the charge transfer resistances for hydrogen peroxide at the glassy carbon composite electrode GCPE modified with 5.0 % w/w Pt/C, Pd/C, Pd/C + Pt/C and Cu@PtPd/C demonstrate a clear synergism on the catalytic reduction of hydrogen peroxide at -0.100 V when having Pt, Pd and Cu incorporated in the core-shell nanostructure. The best compromise between sensitivity, reproducibility and response time was reached with 20.0 % w/w Cu@PtPd/C. For the selected sensor (glassy carbon composite electrode containing 20.0 % w/wGCPE/Cu@PtPd/C 20.0 % w/w) the analytical parameters are highly competitive compared to similar devices reported in the last years, with alinear relationship betw