Premium
Pd‐Au Supported Reduced Graphene Oxide Catalyst for Carbon‐ Hydrogen Bond Activation in Benzene
Author(s) -
Sharma Deepika,
Thakur Kamal Kishor,
Gupta Neeraj
Publication year - 2021
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202101988
Subject(s) - catalysis , graphene , bimetallic strip , benzene , palladium , oxide , inorganic chemistry , adsorption , carbon fibers , chemistry , materials science , photochemistry , organic chemistry , nanotechnology , composite number , composite material
An improved reduced graphene oxide supported bimetallic palladium and gold catalyst was synthesized for the carbon‐hydrogen bond activation of un‐activated aromatic organic substrate benzene. XPS analysis has revealed that catalyst contained Au(0) nanoparticles with Pd(II) ions on its surface. The surface of rGO was found to be rich in sp 2 carbon content with >C=O groups that most probably provided supporting sites for the gold and palladium metals. The XRD analysis further confirmed that Au(0) nanoparticles with palladium oxide and palladium nanoparticles were present on rGO surface. The catalytic activity of the material was tested towards activation of benzene to form biphenyl as an end product. Density function theory has revealed that Pd(II) ion was the active component that insert itself in between C−H bond of benzene and showed efficiency to interact with oxygen molecules. Simultaneously, Au(0) atoms have the tendency to adsorb on the π‐bonded surface of the catalyst and extend its conjugation that reduced the HOMO‐LUMO gap of the catalyst and provided the good catalytic activity.