期刊
ACS APPLIED NANO MATERIALS
卷 4, 期 4, 页码 4070-4076出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.1c00396
关键词
hierarchically porous polymer; block polymer self-assembly; Pt nanoparticle; Suzuki-Miyaura cross-coupling; heterogeneous catalysis
资金
- Hungarian Research Development and Innovation Office [NKFIH OTKA PD 128189]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2018050754]
- Bolyai Janos Research Fellowship of the Hungarian Academy of Science
- Ministry for Innovation and Technology of the National Research, Development and Innovation Fund [UNKP-20-5-SZTE-663]
- NKFIH (OTKA) [K120115]
- Hungarian National Research, Development and Innovation Office [GINOP-2.3.2-15-2016-00013]
- Ministry of Human Capacities [EFOP-3.6.1-16-2016-00014, 20391-3/2018/FEKUSTRAT]
A hierarchically porous polymer was utilized as a support for Pt nanoparticles in a Suzuki-Miyaura cross-coupling reaction. The dual porosity structure allowed for efficient access to reactants and immobilization of nanoparticles, resulting in high activity and recyclability compared to traditional silica supports.
A hierarchically porous polymer (HPP) consisting of micropores (similar to 1 nm) within a 3D continuous mesoporous wall (similar to 15 nm) was used to support well-defined Pt nanoparticles (2 nm in diameter) as a heterogeneous catalyst for the Suzuki-Miyaura cross-coupling reaction in the liquid phase. The ligand-capped nanoparticles were loaded into the polymer and treated with plasma to expose the active surface. The dual porosity was essential: the block polymer-templated mesopores provided the reactants facile access to the nanoparticle center, which was firmly immobilized by the microporous surface. Compared to inorganic mesoporous silica supports, which are intrinsically susceptible to basic hydrolysis, the Pt-HPP featured higher activity for all halide leaving groups, even in green solvents, as well as excellent recyclability. Only 5% decrease in activity was observed after 10 cycles. Pt-HPP was one of the most active heterogeneous catalysts for aryl chloride substrates compared to literature Pt or Pd examples.
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