CeO2-based Pd(Pt) nanoparticles grafted onto Fe3O4/graphene: a general self-assembly approach to fabricate highly efficient catalysts with magnetic recyclable capability.
CeO2-based Pd(Pt) nanoparticles grafted onto Fe3O4/graphene: a general self-assembly approach to fabricate highly efficient catalysts with magnetic recyclable capability.
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DOI：
10.1002/chem.201204302
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发表时间：
2013-04
期刊：
影响因子：
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通讯作者：
Xiao Wang;Dapeng Liu;Shuyan Song;Hongjie Zhang
中科院分区：
文献类型：
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作者：
Xiao Wang;Dapeng Liu;Shuyan Song;Hongjie Zhang
通过在还原氧化石墨烯（RGO）纳米片表面组装Fe 3 O 4和CeO 2/Pd（Pt）多组分催化剂，制备了新型Pd（Pt）催化剂。所制备的Pd（Pt）催化剂在硝基苯选择加氢反应中表现出极高的催化活性。由于Fe_3O_4的存在，催化剂可以通过磁分离从催化体系中容易地回收。它们的高活性、稳定性和磁性可回收性使得所获得的杂化物在催化应用中作为催化剂非常有前途。与传统的多层膜磁性催化剂相比，该方法具有操作简单、易于控制等优点。
New Pd(Pt) catalysts have been fabricated by assembling multicomponents of Fe3O4 and CeO2/Pd(Pt) on the surface of reduced graphene oxide (RGO) nanosheets in layers. The as-obtained Pd(Pt) catalysts exhibit extremely high catalytic activity in the selective hydrogenation reaction of nitrobenzene. Owing to the presence of Fe3O4, the catalysts can be easily recycled from the catalytic system through magnetic separation. Their high activity, stability, and magnetic recyclability make the as-obtained hybrids very promising as catalysts in catalytic applications. Compared to other traditional multishell magnetic catalysts that were prepared by means of layer-by-layer technology, our process is much more facile and more easily controlled.