Ag@polypyrrole: A highly efficient nanocatalyst for the N-alkylation of amines using alcohols

作者：Mandi Usha; Kundu Sudipta K; Salam Noor; Bhaumik Asim^*; Islam Sk Manirul^*

来源：Journal of Colloid and Interface Science, 2016, 467: 291-299.

DOI：10.1016/j.jcis.2016.01.017

• Polypyrrole
• Silver nanoparticles
• N-alkylation reactions
• Aromatic amines

We have synthesized Ag@polypyrrole nanomaterial by dispersing ultrafine silver nanoparticles (Ag NPs) over the organic polymer polypyrrole. The Ag@polypyrrole material has been characterized by powder X-ray diffraction (PXRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), electron paramagnetic resonance (EPR), Fourier transform infrared (FT-IR), ultraviolet-visible absorption (UV-vis) and atomic adsorption spectroscopy (AAS), and thermogravimetric analysis (TGA). The XRD pattern suggested the cubic crystalline phase of Ag NPs in Ag@polypyrrole. TEM image analysis revealed that silver nanoparticles are highly dispersed in the polymer matrix. The Ag@polypyrrole acts as an efficient and versatile heterogeneous nanocatalyst in the N-alkylation of amines using alcohols. The catalyst can be easily prepared, highly robust and reused several times without decrease in its catalytic activity.

• 出版日期2016-4-1