Lee, Keon-U Byun, Ji Young Shin, Hyung-Joon Kim, Sang Hoon 2024-01-19T16:03:14Z 2024-01-19T16:03:14Z 2021-09-02 2020-11-25 0925-8388 https://pubs.kist.re.kr/handle/201004/117819 Nanoporous gold (NP-Au) is a promising versatile material that can be used in many fields due to its high conductivity, large surface area, and excellent stability. NP-Au is commonly functionalized by adding or doping other materials. However, difficult functionalizing procedures are oftentimes obstacles towards catalyst development. Herein, a simple method for alloying nanoporous gold with palladium (NP-AuPd) with a tunable Au/Pd ratio is developed. Ternary alloy films of Au-Pd-Mg are prepared by sputter deposition and Mg is dissolved from the alloy to make nanoporous alloy structures. The Au and Pd in NP-AuPd are evenly distributed over the entire structure. The catalytic activity of the developed NP-AuPd is evaluated by oxidizing ethanol in alkaline media. The optimized NP-AuPd shows remarkable catalytic activity and excellent stability. The nanoporous structure not only increases the number of reaction sites and mass transfer, but it also enhances the durability of the catalyst. The developed method can be extended to the preparation of binary nanoporous thin films with controlled compositions and desired catalytic activities. (C) 2020 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA IN-SITU FTIR PD OXIDATION ELECTROCATALYST PERFORMANCE FILM AU FABRICATION ELECTRODES STABILITY Nanoporous gold-palladium: A binary alloy with high catalytic activity for the electro-oxidation of ethanol Article 10.1016/j.jallcom.2020.155847 1 JOURNAL OF ALLOYS AND COMPOUNDS, v.842 JOURNAL OF ALLOYS AND COMPOUNDS 842 scie scopus 000551028700008 2-s2.0-85086765016 Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Chemistry Materials Science Metallurgy & Metallurgical Engineering Article IN-SITU FTIR PD OXIDATION ELECTROCATALYST PERFORMANCE FILM AU FABRICATION ELECTRODES STABILITY Nanoporous gold-palladium Ethanol oxidation Electrocatalysis Direct alcohol fuel cell Anode