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首页> 外文期刊>Indian journal of engineering and materials sciences >Pt-Ru Bimetallic nanoparticles loading on activated carbon fibers without using reducing agents
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Pt-Ru Bimetallic nanoparticles loading on activated carbon fibers without using reducing agents

机译：Pt-Ru Bimetallic nanoparticles loading on activated carbon fibers without using reducing agents

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摘要

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. PtCl_6~(2-) and Ru~(3+) are impregnated on ACF, and heated up to 800°C in N_2. TG, XRD, TEM and EDS analyses are carried out to confirm Pt/Ru particles loading and distribution on ACF. The amount of PtCl_6~(2-) impregnation is average 75% larger than that of Ru~(3+) at pH upto 3.5 and increases after pH 3.5 by crossing that of PtCl_6~(2-), while Ru~(3+) impregnation is much affected by pH. There are uniformly distributed Pt and Ru nanoparticles, which means simple impregnation and heating the PtCl_6~(2-) and Ru~(3+) complexes up to 400°C is enough to obtain pure Pt-Ru nanoparticles on ACF without using reducing agents.

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