Recoverable Platinum Nanocatalysts Immobilized on Magnetic Spherical Polyelectrolyte Brushes

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• 作者：Shuang Wu ; Julian Kaiser ; Xuhong Guo ; Li Li ; Yan Lu ; Matthias Ballauff
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2012
• 出版时间：April 18, 2012
• 年：2012
• 卷：51
• 期：15
• 页码：5608-5614
• 全文大小：450K
• 年卷期：v.51,no.15(April 18, 2012)
• ISSN：1520-5045

文摘

Recoverable platinum nanocatalysts immobilized on magnetic spherical polyelectrolyte brushes (MSPB) were synthesized and characterized by high resolution transmission electron microscope (HRTEM), thermal gravimetric analysis (TGA), X-ray diffraction (XRD), and vibrating sample magnetometer (VSM). High catalytic activity was found by photometrically monitoring the reduction of 4-nitrophenol by NaBH₄ in the presence of MSPB-Pt composites. An excellent stability and recyclability of catalyst was observed after consecutive eight runs following by external magnetic-separation and redispersion. This novel approach provides an excited potential application in preparation of recyclable metal nanocatalysts with high activity.