Kim, Hyun-Joong Kim, Won-Il Park, Tae-Jin Park, Hyung-Sang Suh, Dong Jin 2024-01-20T22:35:50Z 2024-01-20T22:35:50Z 2021-09-03 2008-09 0008-6223 https://pubs.kist.re.kr/handle/201004/133192 Platinum loaded carbon aerogel catalysts for application in polymer electrolyte membrane fuel cells have been synthesized from the alcoholic sol-gel reaction of phloroglucinol with furfural using propylene oxide as a reducing agent of platinum salt, followed by supercritical drying with carbon dioxide. Subsequent carbonization of the platinum-organic aerogels under a reducing gas flow produced platinum-carbon aerogels. X-ray diffraction and transmission electron microscopy analyses of the platinum-carbon aerogel catalysts indicate the formation of well-dispersed platinum nanoparticles having sizes of about 3 nm. Surface characterization of the platinum-carbon aerogel by X-ray photoelectron spectroscopy reveals that 60% of the platinum is present in its metallic state. Electrochemical characterization by hydrogen adsorption/desorption cyclic voltammetry and CO stripping voltammetry indicates that the electrochemical active surface areas of the platinum-carbon aerogel are comparable to those of commercial catalysts. (C) 2008 Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD SUPPORTED CATALYSTS PT/C CATALYSTS PARTICLE-SIZE NANOPARTICLES ELECTROCATALYSTS NANOCATALYSTS PERFORMANCE OXIDATION Highly dispersed platinum-carbon aerogel catalyst for polymer electrolyte membrane fuel cells Article 10.1016/j.carbon.2008.05.022 1 CARBON, v.46, no.11, pp.1393 - 1400 CARBON 46 11 1393 1400 scie scopus 000259523000004 2-s2.0-49349097696 Chemistry, Physical Materials Science, Multidisciplinary Chemistry Materials Science Article SUPPORTED CATALYSTS PT/C CATALYSTS PARTICLE-SIZE NANOPARTICLES ELECTROCATALYSTS NANOCATALYSTS PERFORMANCE OXIDATION Aerogel Platinum Catalyst Fuel Cell Dispersion