Steam treatment: a facile and effective process for the removal of PVP from shape-controlled palladium nanoparticles

In general, a colloidal method employing polyvinylpyrrolidone (PVP) as the stabilizer has been proven particularly suitable for preparing Pd nanoparticles (Pd-NPs) with controlled morphology and size. However, this surfactant will seriously cover the Pd-NP surface, which is detrimental for catalytic...

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Bibliographic Details
Published inNanoscale Vol. 10; no. 25; pp. 11992 - 11996
Main Authors Yang, Lini, Cheng, Guangzhen, Guo, Yushu, Li, Dan, Xia, Lixin, Liu, Hongyang
Format Journal Article
LanguageEnglish
Published England Royal Society of Chemistry 01.01.2018
Subjects
Carbon nanotubes
Catalysis
Catalytic activity
Morphology
Nanoparticles
Palladium
Polyvinylpyrrolidone
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Summary:In general, a colloidal method employing polyvinylpyrrolidone (PVP) as the stabilizer has been proven particularly suitable for preparing Pd nanoparticles (Pd-NPs) with controlled morphology and size. However, this surfactant will seriously cover the Pd-NP surface, which is detrimental for catalytic activity. In this paper, we reported a method to remove PVP from the carbon nanotube (CNT) supported Pd nanocubes (Pd-NCs) and Pd nanooctahedra (Pd-NOs) by steam treatment in a lab-made reactor. We found that this method can not only efficiently remove PVP from the Pd-NP surface, but also can well maintain the original structure of Pd-NCs and Pd-NOs, dramatically enhancing the catalytic performance. The present approach may promote potential applications of Pd-NPs prepared by colloidal methods in catalytic fields.
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ISSN:2040-3364
2040-3372
DOI:10.1039/c8nr02996b