Journal
INORGANICA CHIMICA ACTA
Volume 417, Issue -, Pages 208-221Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2014.02.015
Keywords
Activated carbons; Pyrimidine derivatives; Ligand adsorption; Supported metal-complexes; Metal nanoparticles; Catalytic behavior
Categories
Ask authors/readers for more resources
Molecular ligands with a particular topology, based on a polar heteroaromatic nucleus linked to hydrophilic (metal-complexing) substituents, form very stable assemblies with activated carbons (ACs) due to strong pi-pi interactions between the planar pyrimidine moiety and the arene centers of the AC surfaces. Heteroatomic functions at the edges of the AC graphitic sheets do not alter the interaction mode with the ligands nor the stability of the assemblies. That results in the formation of stable hybrids, AC/ligand, whose surface chemical properties, specially the acid base behavior and the affinity to metal ions, reflect those of the non-conjugated, hydrophilic moieties of the ligands. Consequently, such hybrid materials show metal ion adsorptivities that are superior to those of the parent AC and correlate with the metal-binding abilities of the non-conjugated substituents. Significant amounts of meso-and macropores are required in the parent AC to efficiently transfer the chemical properties of the ligand non-conjugated substituents to the hybrid AC/ligand. After adsorption of metal ions, new hybrids, AC/ligand/metal, emerge with interesting potential applications. Thus, an AC/triamine ligand/Pd(II) hybrid showed high catalytic activity in hydrogenation reactions due to the formation of highly stable Pd nanoparticles at the AC surface during the first reaction cycle. (C) 2014 Published by Elsevier B.V.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available