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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.17 [2010] >
IJEMS Vol.17(5) [October 2010] >
| Title: | Pt-Ru Bimetallic nanoparticles loading on activated carbon fibers without using reducing agents |
| Authors: | Lee, Jaeyoung
Pyo, Daewoong
Lee, Youngseak
Yang, Xiaoping
Ryu, Seungkon |
| Keywords: | Platinum-ruthenium alloyed nanopaticles
Activated carbon fiber
Co-impregnation |
| Issue Date: | Oct-2010 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Platinum-ruthenium(Pt-Ru) bimetallic catalyst system is being
used as catalyst materials of DMFCs anode due to its high tolerance for carbon
monoxide poisoning. Recently, activated carbon fiber (ACF) is reported as a
useful catalyst support because it has several advantages such as high
dispersion of impregnated metals and low mass transfer resistance due to its
uniformly developed micropores. Therefore, Pt-Ru nanoparticles loading on ACF
without using reducing agents is carried out to develop an effective bimetallic
catalyst. PtCl62-
and Ru3+ are impregnated on ACF, and heated up to 800°C in N2. TG,
XRD, TEM and EDS analyses are carried out to confirm Pt/Ru particles loading
and distribution on ACF. The amount of PtCl62-
impregnation is average 75% larger than that of Ru3+ at pH upto
3.5 and increases after pH 3.5 by crossing that of PtCl62-,
while Ru3+ impregnation is much affected by pH. There are
uniformly distributed Pt and Ru nanoparticles, which means simple impregnation
and heating the PtCl62-
and Ru3+ complexes up to 400°C
is enough to obtain pure Pt-Ru nanoparticles on ACF without using reducing
agents. |
| Page(s): | 327-330 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.17(5) [October 2010]
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