Reactivity of Gold Nanobelts with Unique {110} Facets
Sprache des Titels:
Englisch
Original Kurzfassung:
Gold nanobelts were synthesized by directional solidification of the FeAu eutectoid followed by selective phase dissolution. Cleaning from organic molecules was performed in alkaline solution by PbO2 deposition/dissolution to avoid surface reconstruction. The electrochemical behaviour of the Au nanobelts was determined by structure-sensitive electrochemical reactions, and the findings confirm the results obtained by selected area electron diffraction (SAED). The underpotential deposition (UPD) of lead under alkaline conditions and cyclic voltammograms (CVs) in sulphuric acid revealed an unusual large amount of (110) domains (>65?%). Finally, after cleaning the Au nanobelts showed a higher and stable electrocatalytic behaviour toward methanol oxidation in alkaline media. The possible mechanism and the potential applications of the Au nanobelts are discussed.