Research Article


2020, 13(4): 947–951


Fabricating Pd isolated single atom sites on C3N4/rGO for heterogenization of homogeneous catalysis

Ninghua Fu1, Xiao Liang1, Zhi Li1 (*), Wenxing Chen2, Yu Wang3, Lirong Zheng4, Qinghua Zhang5, Chen Chen1, Dingsheng Wang1, Qing Peng1, Lin Gu5, and Yadong Li1 (*)

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1 Department of Chemistry, Tsinghua University, Beijing 100084, China
2 Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
3 Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
4 Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
5 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

Keywords: heterogenization of homogeneous catalysis, metal isolated single atoms, carbon nitride, reduced graphene oxide, monolith catalyst
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Metal isolated single atomic sites catalysts have attracted intensive attention in recent years owing to their maximized atom utilization and unique structure. Despite the success of single atom catalyst synthesis, directly anchoring metal single atoms on three-dimensional (3D) macro support, which is promising to achieve the heterogenization of homogeneous catalysis, remains a challenge and a blank in this field. Herein, we successfully fabricate metal single atoms (Pd, Pt, Ru, Au) on porous carbon nitride/ reduced graphene oxide (C3N4/rGO) foam as highly efficient catalysts with convenient recyclability. C3N4/rGO foam features two-dimensional microstructures with abundant N chelating sites for the stabilization of metal single atoms and vertically-aligned hierarchical mesostructure that benefits the mass diffusion. The obtained Pd1/C3N4/rGO monolith catalyst exhibits much enhanced activity over its nanoparticle counterpart for Suzuki-Miyaura reaction. Moreover, the Pd1/C3N4/rGO monolith catalyst can be readily assembled in a flow reactor to achieve the highly efficient continuous production of 4-nitro-1,1'-biphenyl through Suzuki-Miyaura coupling.
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Fabricating Pd isolated single atom sites on C3N4/rGO for heterogenization of homogeneous catalysis. Nano Res. 2020, 13(4): 947–951

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