title: Au-Based Catalysts: Electrochemical Characterization for Structural Insights.
abstract: Au-based catalysts are widely used in important processes because of their peculiar characteristics. The catalyst performance depends strongly on the nature and structure of the metal nanoparticles, especially in the case of bimetallic catalysts where synergistic effects between the two metals can be occasionally seen. In this paper, it is shown that electrochemical characterisation (cyclovoltammetry CV and electrochemical impedance spectroscopy EIS) of AuPd systems can be used to determine the presence of an electronic interaction between the two metals, thus providing a strong support in the determination of the nature of the synergy between Au and Pd in the liquid phase oxidation of alcohols. However, it seems likely that the strong difference in the catalytic behavior between the single metals and the bimetallic system is connected not only to the redox behaviour, but also to the energetic balance between the different elementary steps of the reaction.
authors.affiliation: Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy. valentina.pifferi@unimi.it.
authors.forename: Valentina
authors.initials: V
authors.lastname: Pifferi
authors.affiliation: Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy. carine.chanthaw@unimi.it.
authors.forename: Carine E
authors.initials: CE
authors.lastname: Chan-Thaw
authors.affiliation: Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy. sebastiano.campisi@unimi.it.
authors.forename: Sebastiano
authors.initials: S
authors.lastname: Campisi
authors.affiliation: Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy. anna.testolin@studenti.unimi.it.
authors.forename: Anna
authors.initials: A
authors.lastname: Testolin
authors.affiliation: Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy. alberto.villa@unimi.it.
authors.forename: Alberto
authors.initials: A
authors.lastname: Villa
authors.affiliation: Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy. luigi.falciola@unimi.it.
authors.forename: Luigi
authors.initials: L
authors.lastname: Falciola
authors.affiliation: Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy. Laura.Prati@unimi.it.
authors.forename: Laura
authors.initials: L
authors.lastname: Prati
mesh_terms: D002384:Catalysis; D055664:Electrochemical Techniques; D005990:Glycerol / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D010084:Oxidation-Reduction; D010165:Palladium / Q000737:chemistry; D010316:Particle Size; D010984:Platinum / Q000737:chemistry
chemical_list: D010984:Platinum; D010165:Palladium; D006046:Gold; D005990:Glycerol
keywords: AuPd catalysts; bimetallic catalyst characterization; cyclovoltammetry; electrochemical impedance spectroscopy; synergistic effect