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Open Access Enhanced catalytic activity and stability of palladium decorated iridium-copper nanoparticles for formic acid electro-oxidation reaction

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Aim to improve the catalytic activity and stability of Pd-based catalysts for formic acid electro-oxidation reaction (FAOR), a Pd decorated IrCu/C nanoparticles (NPs) catalyst was synthesized via a facile method. The crystal structure and composition were mainly characterized by XRD, ICP-OES, XPS, and TEM. According to the experimental results, the metal NPs uniformly disperse on the carbon support, and the IrCu NPs are modified by Pd which shows core–shell like structure. The Ir1 [email protected]8/C catalyst exhibits the highest activity and stability toward FAOR according to electrochemical measurements results. The mass activity of Pd in Ir1 [email protected]8/C at 0.11 V (vs. SCE) is about 1.37, 1.93 and 3.05 times as high as that of IrCuPd/C, [email protected]/C and Pd/C, respectively. The enhancement should be attributed to the electronic effect, bi-functional mechanism, and its unique structure.

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Keywords: ELECTRO-OXIDATION; FORMIC ACID; NANOPARTICLE; PALLADIUM BASED CATALYST

Document Type: Research Article

Publication date: February 1, 2019

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  • Materials Express is a peer-reviewed multidisciplinary journal reporting emerging researches on materials science, engineering, technology and biology. Cutting-edge researches on the synthesis, characterization, properties, and applications of a very wide range of materials are covered for broad readership; from physical sciences to life sciences. In particular, the journal aims to report advanced materials with interesting electronic, magnetic, optical, mechanical and catalytic properties for industrial applications.
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