Efficient and biocompatible new palladium-supported boehmite nanoparticles: synthesis, characterization and application in Suzuki–Miura and Mizoroki–Heck coupling reactions

Abstract

Synthesis and characterization of nanoparticles of palladium-supported boehmite (Pd(0)-SMTU-boehmite) by using XRD, SEM, EDS, TGA, BET, ICP and FT-IR technics. Application of Pd(0)-SMTU-boehmite nanoparticles as a new catalyst for C-C...

A new neodymium complex on renewable magnetic biochar nanoparticles as an environmentally friendly, recyclable and efficient nanocatalyst in the homoselective synthesis of tetrazoles

“… 26 Stretching vibrations of C–H bonds were characterized in FT-IR spectra by several peaks lower than 3000 cm −1 . 36 Bending vibrations and stretching vibrations of organic layers are observed as peaks in the ranges 600–720 cm −1 and 1400–1650 cm −1 , respectively, which appeared as broad peaks due to the overlap with the peaks of MNiNPs and BNPs. Stretching vibrations of C N groups were identified by a strong peak at 1627 cm −1 .…”

“…The surface of nanoparticles is covered by hydroxyl groups which are characterized by a broad peak above 3400 cm −1 in the FT-IR spectra. 36 Stretching vibration of Ni–O was characterized by a strong band at about 459 cm −1 and a band above 610 cm −1 . 67,68 The FT-IR spectrum of BNPs showed several characteristic peaks at about 3422 cm −1 , indicating stretching vibrations of surface oxygen-based functional groups such as alcohol, phenol, and carboxylic acid groups.…”

“…15–18 Therefore, nanocatalysts as a bridge between homogeneous and heterogeneous catalysts have recently received attention because they have high catalytic activity and are easily recycled and reused, so they do not have the disadvantages of conventional catalysts, while having their own advantages. 19–22 In this context, different nanoparticles such as mesoporous silica materials, 23–25 graphene oxide, 26 polymers, 27,28 hercynite, 29 MOF nanoparticles, 30–32 boehmite, 33–36 magnetic nanoparticles, 37,38 carbon nanostructures, 39,40 biochar, 41–45 etc. have been reported as catalysts or catalyst supports.…”