RT info:eu-repo/semantics/article T1 Spectroelectrochemical synthesis of gold nanoparticles using cyclic voltammetry in the presence of a protective agen A1 Fernández Blanco, Ana Cristina A1 Heras Vidaurre, Aránzazu A1 Ruiz Fernández, Virginia A1 Colina Santamaría, Álvaro K1 Química analítica K1 Chemistry, Analytic AB Modification of electrodes with metal nanoparticles (NPs) is attracting intense interest because of the widespread applications of these electrodes as sensors in electroanalysis. In the present study, we have analysed the electrodeposition of gold nanoparticles (Au NPs) on a platinum electrode in the presence of polyvinylpyrrolidone using UV/Vis spectroelectrochemistry, which allows us to obtain in situ evidence on the kind of nanoparticles deposited on the electrode. Under the selected experimental conditions, it has been possible to understand the reaction pathway for the synthesis of Au NPs in a voltammetry experiment. We establish that generation of NPs of a specific size is dramatically favoured during the different oxidation and reduction processes. Experiments with and without protective agents revealed that NPs generation is favoured from the first cycle when a protective agent is present in solution PB Royal Society of Chemistry SN 2046-2069 YR 2014 FD 2014 LK http://hdl.handle.net/10259/3855 UL http://hdl.handle.net/10259/3855 LA eng NO Junta de Castilla y Leon (GR71, BU349-U13), Ministerio de Economia y Competitividad (CTQ2010-17127, V. R. Programa Ramon y Cajal) and the Academy of Finland is gratefully acknowledged. C. F.-B. thanks Ministerio de Educacion, Cultura y Deporte for a predoctoral FPU fellowship DS Repositorio Institucional de la Universidad de Burgos RD 29-mar-2024