Preparation of Pt-Ru@ polypyrrole-MWNT catalysts by gamma-irradiation and chemical reduction and their adsorption capacity for CO.
With the objective to prepare electrocatalysts with high efficiency, the Pt-Ru@PPy-MWNT catalysts were prepared by different approaches. First, the polypyrrole (PPy) as anchoring materials was coated on the surface of multi walled carbon nanotubes (MWNT) by in situ polymerization. Subsequently, Pt-Ru nanoparticles were deposited onto PPy-MWNT composite by different methods like the reduction of metal ions by gamma-irradiation and chemical reduction using formaldehyde as reducing agent assisted with stirring of magnetic bar, and assisted with microwave irradiation, and assisted with ultrasonic irradiation, in order to prepare electrocatalyst for fuel cell. The catalytic efficiency of Pt-Ru@PPy-MWNT catalyst was examined for CO stripping.
Department of Chemistry, BK 21 NanoBiosensor Research Team, Hannam University, Daejeon 305-811, Republic of Korea.
Hyoung-Bong
HB
Bae
Sang-Hyub
SH
Oh
Jin-Chun
JC
Woo
Seong-Ho
SH
Choi
D000327:Adsorption; D002248:Carbon Monoxide / Q000737:chemistry*; D005557:Formaldehyde; D005720:Gamma Rays; D053768:Metal Nanoparticles / Q000737:chemistry*; D008854:Microscopy, Electron; D008872:Microwaves; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010084:Oxidation-Reduction; D010316:Particle Size; D010984:Platinum / Q000737:chemistry*; D058105:Polymerization; D011108:Polymers / Q000737:chemistry*; D011758:Pyrroles / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D014961:X-Ray Diffraction
D037742:Nanotubes, Carbon; D011108:Polymers; D011758:Pyrroles; D005557:Formaldehyde; C067635:polypyrrole; D010984:Platinum; D002248:Carbon Monoxide; D012428:Ruthenium