Nanostructured Au/Ti bimetallic electrodes in selective anodic oxidation of carbohydrates. (10th January 2016)

• Record Type: Journal Article
• Authors: Terzi, Fabio; Zanfrognini, Barbara; Ruggeri, Stefano; Dossi, Nicolò
• Is Part Of: Electrochimica acta. Volume 188(2016)
• Page Start: 262
• Page End: 268
• Publication Date: 2016-01-10
• Subjects: titanium -- gold nanoparticles -- carbohydrates -- aldoses -- glucose; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2015.11.130
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: The anodic oxidation of species possessing potentially oxidisable functionalities has been studied on a non conventional electrode system based on a Ti substrate partially coated by electrodeposited Au nanoparticles. The results show that the electrocatalytic behaviour of the Au nanoparticles, in the frame of such a bimetallic system, is very different from that of pure Au. In particular, catalytic synergy between Au and Ti leads to the electro-oxidation of aldoses and aldehydes, while ketoses and monohydric alcohols result electrochemically inert. A different behaviour has been observed in the case of bulk Au surface: all the species under investigation undergo oxidation, so that no selectivity is activated. A correlation is found between the actual electroactivity and the nature of the functional group, when considered together with the chemical structure of the molecule.