Preparation of Pd-PS, Pd-PSB and Pd-PSC nanoparticles by γ-irradiation and their catalytic efficiency in Sonogashira coupling reaction
| Autor: | Se-Wook Kim, Seong-Ho Choi, Hyun Gyu Park, Seong-Dae Oh, Yu Ping Zhang, Seok-Gn Ryu |
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| Rok vydání: | 2008 |
| Předmět: |
chemistry.chemical_classification
Materials science Scanning electron microscope Nanoparticle Emulsion polymerization Sonogashira coupling Photochemistry Catalysis law.invention Styrene chemistry.chemical_compound Colloid and Surface Chemistry Hydrocarbon chemistry law Electron microscope Nuclear chemistry |
| Zdroj: | Colloids and Surfaces A: Physicochemical and Engineering Aspects. :224-229 |
| ISSN: | 0927-7757 |
| DOI: | 10.1016/j.colsurfa.2007.05.041 |
| Popis: | The poly(styrene), PS, of 450 nm diameter, poly(styrene-co-4-vinylphenylboronic acid), PSB, nanoparticles of 220–400 nm diameter, and poly(styrene-co-4-vinylbenzoic acid), PSC, nanoparticles of 240–305 nm were prepared by emulsifier-free emulsion polymerization. The surface of PS, PSB, and PSC nanoparticles were loaded with Pd nanoparticles by reduction of Pd ions using γ-irradiation in order to apply catalyst in Sonogashira coupling reaction. The Pd-PS, Pd-PSB and Pd-PSC were characterized by High-Resolution Transmittance Electron Microscopy (HR-TEM), Field-Emission Scanning Electron Microscopy (FE-SEM), and Inductively Coupled Plasma-Atomic Emission Spectrometer (ICP-AES), respectively. The HR-TEM, XRD and ICP-AES data show that the Pd nanoparticles were loaded on the surface of PS, PSB, and PSC nanoparticles, respectively. Catalytic efficiency of the Pd-PS, Pd-PSB and Pd-PSC nanoparticles was tested in Sonogashira coupling reaction. The catalytic efficiency of the Pd-PS, Pd-PSB, and Pd-PSC nanoparticles was increased with increasing Pd nanoparticle contents. |
| Databáze: | OpenAIRE |
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