【作者】 张慧； 刘杨； 王虹； 吴杰；

【Author】 Hui Zhang;Yang Liu;Hong Wang;Jie Wu;Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University;

【机构】 黑龙江大学化学化工与材料学院功能无机材料化学教育部重点实验室；

【摘要】 贵金属纳米粒子,由于其优异的催化活性,得到了人们的广泛关注。但易聚集、不易回收等缺点,限制其广泛的应用。在本文中,我们通过一步法制备了Fe₃O₄@Pd-PPy催化剂。此催化剂不仅解决了贵金属纳米粒子在催化过程中易聚集、易脱落的缺陷,而且其在外加磁场下很容易从体系中分离出来,具有很好的重复利用性。更多还原

【Abstract】 Metal nanoparticles have drawn much attention because of their high catalytic activity. However, they were easy to aggregation and difficult to separation, which have greatly hindered their practical applications. In this paper, we designed a simple way to prepare Fe₃O₄@Pd-Polypyrrole composites with high catalytic activity and stability. Due to the protection of polypyrrole shell, the metal nanoparticles could hardly fall off and aggregated. Moreover, the magnetic property of Fe₃O₄ nanoparticles made the composites could be easily recycled by magnet; hence they exhibited good reusability.更多还原