Journal
NANO RESEARCH
Volume 7, Issue 9, Pages 1280-1290Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-014-0492-1
Keywords
graphene; nitrogen-doped; Pd cluster; catalyst; Suzuki reaction
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Funding
- Key Program Projects of the National Natural Science Foundation of China [21031001]
- National Natural Science Foundation of China [91122018, 21371053, 51372071]
- Cultivation Fund of the Key Scientific and Technical Innovation Project, Ministry of Education of China [708029]
- Special Research Fund for the Doctoral Program of Higher Education of China [20112301110002]
- Cultivation Fund of Industrialization for Scientific and Technological Achievements of Heilongjiang Province [1253CGZH13]
- Application Technology Research and Development Project of Harbin City [2013AA7BG025]
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The introduction of nitrogen significantly decreases the metal particle size and improves the performance of metal-based graphene-supported catalysts. In this work, the density functional theory is used to understand the interaction between nitrogen-doped graphene and Pd@PdO clusters. Experiments show that small size Pd@PdO clusters (1-2 nm) can be grown uniformly on nitrogen-doped graphene sheets by a facile oxidation-reduction method. The nanoscale interaction relationship between nitrogen-doped graphene and Pd@PdO clusters is investigated through X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectra (XAS). The composite catalysts are applied in Suzuki-Miyaura reactions giving high yields and good structural stability. These results have potential impact in design and optimization of future high performance catalyst materials for cross coupling reactions.
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