caa a22 4500 606173382 CHVBK 20210128100732.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s11244-015-0480-z doi (NATIONALLICENCE)springer-10.1007/s11244-015-0480-z Electrocatalytic Properties of Carbon Nanotubes Decorated with Copper and Bimetallic CuPd Nanoparticles [Elektronische Daten] [Jhih-Fong Lin, Melinda Mohl, Geza Toth, Róbert Puskás, Ákos Kukovecz, Krisztian Kordas] Copper particles were deposited on the surface of palladium decorated buckypapers by the means of chemical plating, in which the palladium nanoparticles act as catalyst for initiating the reduction of complexed Cu2+ ions in the presence of formaldehyde. By adjusting the plating time, it is possible to tune the size of the highly crystalline copper particles and at the same time control the coverage of the metal on the surface of carbon nanotubes. In a subsequent step, the copper particles were partially exchanged with palladium to obtain bimetallic CuPd nanoparticles on the nanotubes by applying galvanic replacement reactions in aqueous solution of Pd2+ ions. Sufficiently high electrical conductivity of both Cu and CuPd/buckypaper composites makes them suitable to be used as electrocatalytic electrodes. The electrochemical properties of the different electrode materials were also evaluated by the model reaction of methanol electrooxidation. The degradation mechanism of copper and CuPd bimetallic catalysts were systematically studied by employing surface characterization techniques on the composite films after electrocatalytic testing in alkaline solution in the presence and absence of methanol. Chronoamperometric test of the catalysts/buckypaper composites had revealed that palladium plays a protecting role in CuPd bimetallic structure during methanol electrooxidation. Springer Science+Business Media New York, 2015 Copper nationallicence Palladium nationallicence Galvanic replacement nationallicence Bimetallic nanoparticles nationallicence Methanol electrooxidation nationallicence Lin Jhih-Fong Microelectronics and Materials Physics Laboratories, Department of Electrical Engineering, University of Oulu, P.O.Box 4500, 90570, Oulu, Finland aut Mohl Melinda Microelectronics and Materials Physics Laboratories, Department of Electrical Engineering, University of Oulu, P.O.Box 4500, 90570, Oulu, Finland aut Toth Geza Microelectronics and Materials Physics Laboratories, Department of Electrical Engineering, University of Oulu, P.O.Box 4500, 90570, Oulu, Finland aut Puskás Róbert Department of Applied and Environmental Chemistry, University of Szeged, Rerrich Bela ter 1, 6720, Szeged, Hungary aut Kukovecz Ákos Department of Applied and Environmental Chemistry, University of Szeged, Rerrich Bela ter 1, 6720, Szeged, Hungary aut Kordas Krisztian Microelectronics and Materials Physics Laboratories, Department of Electrical Engineering, University of Oulu, P.O.Box 4500, 90570, Oulu, Finland aut Topics in Catalysis Springer US; http://www.springer-ny.com 58/14-17(2015-10-01), 1119-1126 1022-5528 58:14-17<1119 2015 58 11244 https://doi.org/10.1007/s11244-015-0480-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11244-015-0480-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lin Jhih-Fong Microelectronics and Materials Physics Laboratories, Department of Electrical Engineering, University of Oulu, P.O.Box 4500, 90570, Oulu, Finland aut NATIONALLICENCE 700 1- Mohl Melinda Microelectronics and Materials Physics Laboratories, Department of Electrical Engineering, University of Oulu, P.O.Box 4500, 90570, Oulu, Finland aut NATIONALLICENCE 700 1- Toth Geza Microelectronics and Materials Physics Laboratories, Department of Electrical Engineering, University of Oulu, P.O.Box 4500, 90570, Oulu, Finland aut NATIONALLICENCE 700 1- Puskás Róbert Department of Applied and Environmental Chemistry, University of Szeged, Rerrich Bela ter 1, 6720, Szeged, Hungary aut NATIONALLICENCE 700 1- Kukovecz Ákos Department of Applied and Environmental Chemistry, University of Szeged, Rerrich Bela ter 1, 6720, Szeged, Hungary aut NATIONALLICENCE 700 1- Kordas Krisztian Microelectronics and Materials Physics Laboratories, Department of Electrical Engineering, University of Oulu, P.O.Box 4500, 90570, Oulu, Finland aut NATIONALLICENCE 773 0- Topics in Catalysis Springer US; http://www.springer-ny.com 58/14-17(2015-10-01), 1119-1126 1022-5528 58:14-17<1119 2015 58 11244