Journal
MATERIALS TODAY COMMUNICATIONS
Volume 35, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.mtcomm.2023.106007
Keywords
Graphene oxide; Palladium nanoparticles; Nanohybrids; Solvent -free functionalization; Eco-friendly approach; Characterization
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Nanostructured hybrids of graphene oxide and palladium were synthesized through one-step solvent-free gas phase treatment, followed by in situ decoration with palladium in the liquid medium. The proposed method offers an eco-friendly alternative for obtaining nanohybrids of graphene oxide and palladium nanoparticles under mild conditions. The hybrids demonstrated the formation of nanometer-sized crystalline palladium particles, with larger particle sizes observed for diamine-functionalized substrates compared to monoamine or non-functionalized substrates. The thermal stability of the obtained hybrids was slightly lower than pristine graphene oxide.
Nanostructured hybrids of graphene oxide and palladium were fabricated by means of one-step solvent-free gas phase treatment of graphene oxide with the aliphatic amines 1-octadecylamine and 1,8-diaminooctane, followed by in situ decoration with palladium in the liquid medium using palladium chloride as the precursor and citric acid as a mild and environmentally friendly stabilizing and reducing agent. The proposed synthesis method represents an eco-friendly alternative for obtaining nanohybrids of graphene oxide and palladium nanoparticles under mild conditions. Spectroscopic studies evidenced -COOH group derivatization of graphene due to the amidation reaction; transmission electron microscopy demonstrated the formation of nanometer-sized crystalline palladium particles and evidenced that the diamine-functionalization results in a larger particle sizes than observed for monoamine- or non-functionalized substrates. The hybrids obtained have a slightly lower thermal stability than pristine graphene oxide.
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