Three-dimensional free-standing gold nanowire networks as a platform for catalytic applications. Issue 7 (3rd February 2023)

• Record Type: Journal Article
• Authors: Li, Mohan; Ulrich, Nils; Schubert, Ina; Sigle, Wilfried; Peter Wagner, Michael Florian; Trautmann, Christina; Toimil-Molares, Maria Eugenia
• Is Part Of: RSC advances. Volume 13:Issue 7(2023)
• Page Start: 4721
• Page End: 4728
• Publication Date: 2023-02-03
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d2ra08035d
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Highly interconnected Au nanowire networks synthesized by electrodeposition in etched ion-track polymer templates show promising catalytic performance for methanol oxidation reaction. Abstract : We report the catalytic performance of networks of highly interconnected Au nanowires with diameters tailored between 80 and 170 nm. The networks were synthesized by electrodeposition in etched ion-track polymer templates, and the synthesis conditions were developed for optimal wire crystallinity and network homogeneity. The nanowire networks were self-supporting and could be easily handled as electrodes in electrochemical cells or other devices. The electrochemically active surface area of the networks increased systematically with increasing the wire diameter. They showed a very stable performance during 200 CV cycles of methanol oxidation reactions, with the peak current density reaching up to 200 times higher than that of a flat reference electrode, with only a 5% drop in the peak current density. The Au nanowire networks proved to be excellent model systems for investigation of the performance of porous catalysts and very promising nanosystems for application in direct alcohol fuel cell catalysts.