Aggregated Pt-Pd nanoparticles on Nafion membrane for impulsive decomposition of hydrogen peroxideElectronic supplementary information (ESI) available. See DOI: 10.1039/c5ra05620a

Pt-Pd aggregated nanoparticles were immobilized on a Nafion-117 membrane to decompose hydrogen peroxide. The Pt or Pd particles alone decompose hydrogen peroxide at an insignificant rate. But a bimetallic Pt-Pd catalyst, having a Pt to Pd composition between 0.33 and 0.75, causes steady decompositio...

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Main Authors: Hasnat, Mohammad A, Rahman, Mohammed M, Siddiquey, Iqbal A, Borhanuddin, S. M, Alam, M. Saiful, Rahman, M. Hamidur, Asiri, Abdullah M
Format: Article
Language:English
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Summary:Pt-Pd aggregated nanoparticles were immobilized on a Nafion-117 membrane to decompose hydrogen peroxide. The Pt or Pd particles alone decompose hydrogen peroxide at an insignificant rate. But a bimetallic Pt-Pd catalyst, having a Pt to Pd composition between 0.33 and 0.75, causes steady decomposition at an appreciable rate at room temperature. The Pd and Pt sites have been proposed to initiate and to complete, respectively, the impulsive hydrogen peroxide decomposition reaction. A Pd site initiates hydrogen peroxide decomposition by adsorbing one 'O' followed by splitting of O-H bond. Meanwhile, a Pt site finally completes the decomposition process by enabling desorption of the incipient O 2 species.
ISSN:2046-2069
DOI:10.1039/c5ra05620a