title: Synthesis of CuNP-Modified Carbon Electrodes Obtained by Pyrolysis of Paper.
abstract: A one-step approach for the synthesis and integration of copper nanoparticles (CuNPs) onto paper-based carbon electrodes is herein reported. The method is based on the pyrolysis (1000 °C under a mixture of 95% Ar / 5% H2for 1 hour) of paper strips modified with a saturated solution of CuSO4and yields to the formation of abundant CuNPs on the surface of carbonized cellulose fibers. The resulting substrates were characterized by a combination of scanning electron microscopy, EDX, Raman spectroscopy as well as electrical and electrochemical techniques. Their potential application, as working electrodes for nonenzymatic amperometric determination of glucose, was then demonstrated (linear response up to 3 mM and a sensitivity of 460 ± 8 μA·cm-2·mM-1). Besides being a simple and inexpensive process for the development of electrochemically-active substrates, this approach opens new possibilities for thein-situsynthesis of metallic nanoparticles without the traditional requirements of solutions and adjuvants.
authors: Department of Analytical Chemistry and Food Technology, University of Castilla-La Mancha, Ciudad Real, E-13004, Spain.
authors: Gema M
authors: GM
authors: Duran
authors: Department of Chemistry, Clemson University, Clemson, SC 29634, USA.
authors: Tomás E
authors: TE
authors: Benavidez
authors: Department of Chemistry, The University of Texas at San Antonio, San Antonio, TX 78249, USA.
authors: Jason G
authors: JG
authors: Giuliani
authors: Department of Analytical Chemistry and Food Technology, University of Castilla-La Mancha, Ciudad Real, E-13004, Spain.
authors: Angel
authors: A
authors: Rios
authors: Department of Chemistry, Clemson University, Clemson, SC 29634, USA.
authors: Carlos D
authors: CD
authors: Garcia
keywords: Copper nanoparticles; carbon electrodes; electrochemical sensors; non-enzymatic glucose sensor