Facile simultaneous synthesis of tetraaniline nanostructures/silver nanoparticles as heterogeneous catalyst for the efficient catalytic reduction of 4-nitrophenol to 4-aminophenol

Sathish Mohan Botsa; Yarramsetti Pavan Kumar; Keloth Basavaiah

doi:10.1039/d0ra03327h

Facile simultaneous synthesis of tetraaniline nanostructures/silver nanoparticles as heterogeneous catalyst for the efficient catalytic reduction of 4-nitrophenol to 4-aminophenol

RSC Adv. 2020 Jun 9;10(37):22043-22053. doi: 10.1039/d0ra03327h. eCollection 2020 Jun 8.

Authors

Sathish Mohan Botsa^{1

2}, Yarramsetti Pavan Kumar¹, Keloth Basavaiah¹

Affiliations

¹ Dept of Inorganic & Analytical Chemistry, Andhra University Visakhapatnam India-530003 pavan.y525@gmail.com klbasu@gmail.com.
² National Centre for Polar and Ocean Research, Ministry of Earth Sciences Goa India-403804.

Abstract

Nanocomposites of tetraaniline (TAN) nanostructures/silver nanoparticles (Ag NPs) were synthesized by an interfacial polymerization method using N-phenyl-1, 4-phenylenediamine (NPPD), AgNO₃ and ammonium persulphate (APS) as monomer, oxidizing agent in immiscible solvent toluene-water respectively. The structure and morphology of the as-prepared TAN and Ag NPs were investigated by UV-visible spectroscopy, Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and thermogravimetry (TG). The results of FTIR spectroscopy confirmed the formation of TAN and Ag NPs and those of XRD showed the presence of the face centred cubic (fcc) phase of Ag NPs. The FESEM and TEM images gave direct evidence that Ag NPs stabilized with the TAN nanostructures. TGA indicated the enhanced thermal stability of the nanocomposites (NCs). The catalytic activity of TAN/Ag NCs was investigated for the model reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) in the presence of excess sodium borohydride.