Palladium decorated on a new dendritic complex with nitrogen ligation grafted to graphene oxide: fabrication, characterization, and catalytic application

Immobilized Pd nanoparticles on a new ligand, namely, tris(pentaethylene-pentamine)triazine supported on graphene oxide (Pdnp-TPEPTA(L)-GO) was introduced as a novel and robust heterogeneous catalyst for use in C-C bond formation reaction. The Pdnp-TPEPTA(L)-GO catalyst was synthesized by complexation of Pd with TPEPTA as a ligand with high N-ligation sites that were supported on graphene oxide through 3-chloropropyltrimethoxysilane. The prepared catalyst was characterized using some microscopic and spectroscopic techniques. The TPEPTA(L)-GO substrate is a 2D heterogeneous catalyst with a high specific surface area and a large amount of N-ligation sites. The Pdnp-TPEPTA(L)-GO catalyst used in the C-C bond formation reaction between aryl or heteroaryl and phenylboronic acid derivatives was applied towards the synthesis of biaryl units in high isolated yields. Notably, a series of competing experiments were performed to establish the selectivity trends of the presented method. Also, this catalyst system was reusable at least six times without a significant decrease in its catalytic activity.

Efficient heavy metal ion removal by triazinyl-β-cyclodextrin functionalized iron nanoparticles

A novel magnetic nano-adsorbent containing Fe₃O₄ nanoparticles functionalized with MCT-β-CD was fabricated and exhibited a remarkable enhancement in heavy metal removal efficiency from aqueous solutions.

Structure, morphology and electronic properties ofl-phenylalanine edge-functionalized graphite platelets through Friedel–Crafts acylation reaction

Edge functionalized graphite were prepared by Friedel–Crafts acylation withl-phenylalanine. The functionalized nanoplatelates are highly dispersible in polar solvents and shows enhanced electron transfer capability compared to pristine graphite.

PEI@SiO2: synthesis from diatomite and application for capturing phenolic compounds from aqueous solution

A PEI@SiO₂ hybrid composite was synthesized for sorption of phenolic compounds.