Add time:07/30/2019         Source:sciencedirect.com

A novel strategy to synthesize copper-based nanoparticles supported on carbon nitride (C3N4) was developed by popping of mixture containing C3N4 and cupric nitrate. Characterizations such as X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) indicate that the structure of g-C3N4 maintained although a popping process occurred. High resolution transmission electronic microscopy (HRTEM) characterization illustrated that copper-based nanoparticles with diameter of < 1 nm were well distributed on g-C3N4. This kind of copper catalyst exhibits high catalytic activity and selectivity in arylation of pyrazole, a simple and effect strategy to construct CN bond in organic chemistry. According to the results of control experiments and characterizations, cuprous oxide should be the catalytic active phase in the supported coper-based catalyst.

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