AAAR 34th Annual Conference
October 12 - October 16, 2015
Hyatt Regency
Minneapolis, Minnesota, USA
Abstract View
One Step Aerosol Synthesis of Pt/Graphene/Carbon Nanoparticles via Microwave Plasma and Methanol Oxidation Reaction
HANKWON CHANG, Eun Hee Jo, Sun Kyung Kim, Hee Dong Jang, Korea Institute of Geoscience and Mineral Resources
Abstract Number: 641 Working Group: Nanoparticles and Materials Synthesis
Abstract Graphene (GR) has drawn much attention due to its excellent physical and chemical properties, which makes it promising for potential applications in various fields, such as transparent conducting electrodes, batteries, biosensors and supercapacitors. Especially, graphene has potential application as a catalyst support in direct methanol fuel cell (DMFC) due to its excellent electrical conductivity and extremely high specific surface area. The platinum (Pt) catalyst has been used as electrocatalysts in DMFCs because it is very effective in reducing oxygen in cathodes and methanol oxidation in anodes. Thus, graphene-supported Pt nanoparticles can be a promising materials for the enhanced methanol oxidation reaction.
Here we report the one-step aerosol synthesis of Pt/graphene/carbon nanoparticles from a solution of hexachloroplatinic acid and alcohol (ethanol or isopropanol) via microwave plasma system, which consisting of an ultrasonic nebulizer for the feeding of precursor droplets, a plasma reactor for the synthesis of Pt/graphene/carbon nanoparticles, and a filter for the particles sampling.
The as-prepared Pt/graphene/carbon nanoparticles were characterized by HR-TEM, XRD and Raman. Further, the electocatalytic applications of the Pt/graphene/carbon nanoparticles are examined through methanol oxidation reaction. The Pt/graphene/carbon nanoparticles exhibit the high electrocatalytic activity for methanol oxidation reactions compared with commercial Pt/carbon black.