Steam treatment: a facile and effective process for the removal of PVP from shape-controlled palladium nanoparticles
| Autor: | Guangzhen Cheng, Lini Yang, Dan Li, Lixin Xia, Yushu Guo, Hongyang Liu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Polyvinylpyrrolidone Palladium nanoparticles 02 engineering and technology Carbon nanotube 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Catalysis Colloid Chemical engineering Pulmonary surfactant law Scientific method medicine General Materials Science 0210 nano-technology medicine.drug Stabilizer (chemistry) |
| Zdroj: | Nanoscale. 10(25) |
| ISSN: | 2040-3372 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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