RT info:eu-repo/semantics/article T1 Aqueous UV–VIS spectroelectrochemical study of the voltammetric reduction of graphene oxide on screen-printed carbon electrodes A1 Navarro Hernández, Carla . A1 González García, Maria Begoña . A1 Hernández Santos, David . A1 Heras Vidaurre, Aránzazu A1 Colina Santamaría, Álvaro A1 Fanjul Bolado, Pablo . K1 Graphene oxide K1 Electrochemically reduced graphene oxide K1 Screen-printed electrodes K1 Cyclic voltammetry K1 Raman spectroscopy K1 UV–VIS spectroelectrochemistry K1 Química analítica K1 Chemistry, Analytic AB Two graphene oxide (GO) materials with different layer size and proportion of functional groups in the basal planes (hydroxyl and epoxy) and in the edges (carbonyl and carboxyl) were used to modify the surface of commercially available screen-printed electrodes. Cyclic voltammetry in 0.1 M KNO3 was evaluated as an easy to use electrochemical methodology to reduce GO attached to the surface of screen-printed electrodes (SPEs). A cathodic peak related to the reduction of GO was identified, and the peak potential was correlated to the difficulty to reduce GO to electrochemically reduced graphene oxide (ERGO) depending on the functional groups present in the basal plane and in the edges of the original GO monolayers. Time-resolved UV–VIS absorption spectroelectrochemistry in near-normal reflection mode on a screen-printed electrode is used for the very first time as an in situ characterization technique for real-time monitoring unambiguously the electrochemical reduction of graphene oxide. PB Elsevier SN 1388-2481 YR 2016 FD 2016-03 LK http://hdl.handle.net/10259/4936 UL http://hdl.handle.net/10259/4936 LA eng NO projects CTQ2014-55583-R and CTQ2014-61914-EXP funded by Ministerio de Economía y Competitividad DS Repositorio Institucional de la Universidad de Burgos RD 28-mar-2024