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Issue 15, 2013
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A simple synthesis method for nano-metal catalyst supported on mesoporous carbon: the solution plasma process

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Abstract

High-electrocatalytic-activity noble nanoparticles (NPs) supported on carbon nanoballs (CNBs) were synthesized using an innovative plasma-in-liquid method, which is known as solution plasma processing (SPP). This technique uses a one-step method for the synthesis of NPs on carbon materials. CNBs are formed using benzene as a carbon precursor while gold (Au) or platinum (Pt) nanoparticles are generated instantaneously via sputtering from metal electrodes. The synthesized NP/CNBs were annealed at 850 °C in order to increase the conductivity of the material. The results of structural characterizations reveal that the Au and Pt NPs are smaller than 10 nm and have a uniform size distribution, and these NPs are successfully loaded onto highly mesoporous CNBs that have an average pore diameter between 13 and 16 nm. In the results from cyclic voltammetry measurements, the Au/CNBs and Pt/CNBs show clear peaks corresponding to the oxidation and reduction features in the catalytic reactions. Apart from noble nanoparticles, SPP can also be used to synthesize various kinds of NPs including bimetallic NPs loaded on spherical carbon supports by changing the working electrodes. The proposed mechanism for the synthesis is discussed in detail. This method shows potential to be a candidate for the next-generation synthesis of NP/carbon in the future.

Graphical abstract: A simple synthesis method for nano-metal catalyst supported on mesoporous carbon: the solution plasma process

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Publication details

The article was received on 11 Mar 2013, accepted on 15 May 2013 and first published on 21 May 2013


Article type: Paper
DOI: 10.1039/C3NR01229H
Citation: Nanoscale, 2013,5, 6874-6882
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    A simple synthesis method for nano-metal catalyst supported on mesoporous carbon: the solution plasma process

    J. Kang, O. L. Li and N. Saito, Nanoscale, 2013, 5, 6874
    DOI: 10.1039/C3NR01229H

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