Abstract
Abstract A facile room temperature and surfactant free synthesis of platinum nanoparticles (Pt-NPs) on benzene tetra-carboxylic acid doped polyaniline (BDP) tube has been successfully demonstrated by solution dipping method. Preparation of Pt-NPs has been done through a red-ox reaction between BDP tubes and Pt-salt, as BDP itself acts as nontoxic reducing agent as well as template cum stabilizer for Pt-NPs. In BDP@Pt composites, ∼2.5 ± 0.5 nm spherical shaped Pt-NPs as observed from TEM studies are nicely decorated on the surface of BDP. The population or the loading density of Pt-NPs on BDP tube is greatly controlled by changing the w/w ratio of BDP to H 2 PtCl 6 . Synthesized BDP@Pt composites are subsequently employed as an efficient electro-catalyst for methanol oxidation reaction (MOR) in acidic medium. Furthermore, the observed catalytic activity is consequently ∼12 times higher than that of commercially available Pt/C catalyst. Depending on the loading density of Pt-NPs on BDP tubes, the efficiency and carbon monoxide (CO) tolerance ability of composites have been explored.
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