A novel strategy to construct supported Pd nanocomposites with synergistically enhanced catalytic performances
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We report a facile protocol for the one-pot preparation of monodisperse Pd nanoparticles (NPs) supported on ultrathin NiCl2 nanosheets (NSs). The effective protocol can be described as in situ reduction–oxidation–assembly to create Pd/NiCl2 nanocomposites and is applicable for the development of stable yet highly active Pd-based heterogeneous catalysts for organic transformations. The Pd/NiCl2 composite displayed synergistically enhanced catalytic activity, high stability, and good recyclability for the tested model oxidation reaction. The in situ nucleation and growth of NiCl2 NS around Pd NPs guaranteed a clean metal–support interface and greatly facilitated the catalytic reaction. This work provides a novel synthesis method for supported Pd nanocomposites suitable for many important applications.
KeywordsPd nanocomposites one-pot synthesis activity stability
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We acknowledge the National Key Research and Development Program from the Ministry of Science and Technology of China (No. 2016YFC0207102), the National Natural Science Foundation of China (NSFC) (Nos. 21501034, 21503053 and 21573050) and Chinese Academy of Sciences (No. XDA09030303) for the funding support. This work made use of the resources of the Beijing National Center for Electron Microscopy at Tsinghua University. We thank Dr. Haijun Yang and Xixi Liang from Analysis Center of Department of Chemistry at Tsinghua University for helping with ESR study.
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