纳米片
催化作用
介孔二氧化硅
材料科学
介孔材料
石墨烯
化学工程
纳米颗粒
纳米技术
金属
化学
有机化学
冶金
工程类
作者
Lu Shang,Tong Bian,Baihui Zhang,Qian Zhang,Li‐Zhu Wu,Chen‐Ho Tung,Yadong Yin,Tierui Zhang
标识
DOI:10.1002/anie.201306863
摘要
Abstract Graphene nanosheet‐supported ultrafine metal nanoparticles encapsulated by thin mesoporous SiO 2 layers were prepared and used as robust catalysts with high catalytic activity and excellent high‐temperature stability. The catalysts can be recycled and reused in many gas‐ and solution‐phase reactions, and their high catalytic activity can be fully recovered by high‐temperature regeneration, should they be deactivated by feedstock poisoning. In addition to the large surface area provided by the graphene support, the enhanced catalytic performance is also attributed to the mesoporous SiO 2 layers, which not only stabilize the ultrafine metal nanoparticles, but also prevent the aggregation of the graphene nanosheets. The synthetic strategy can be extended to other metals, such as Pd and Ru, for preparing robust catalysts for various reactions.
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