Abstract
This paper reported a scientific approach adopting microwave-assisted synthesis as a synthetic route for preparing highly active palladium nanoparticles stabilized by polyvinylpyrrolidone (Pd/PVP) and supported on reduced Graphene oxide (rGO) as a highly active catalyst used for Suzuki, Heck, and Sonogashira cross coupling reactions with remarkable turnover number (6500) and turnover frequency of 78000 h-1. Pd/PVP nanoparticles supported on reduced Graphene oxide nanosheets (Pd-PVP/rGO) showed an outstanding performance through high catalytic activity towards cross coupling reactions. A simple, reproducible, and reliable method was used to prepare this efficient catalyst using microwave irradiation synthetic conditions. The synthesis approach requires simultaneous reduction of palladium and in the presence of Gaphene oxide (GO) nanosheets using ethylene glycol as a solvent and also as a strong reducing agent. The highly active and recyclable catalyst has so many advantages including the use of mild reaction conditions, short reaction times in an environmentally benign solvent system. Moreover, the prepared catalyst could be recycled for up to five times with nearly the same high catalytic activity. Furthermore, the high catalytic activity and recyclability of the prepared catalyst are due to the strong catalyst-support interaction. The defect sites in the reduced Graphene oxide (rGO) act as nucleation centers that enable anchoring of both Pd/PVP nanoparticles and hence, minimize the possibility of agglomeration which leads to a severe decrease in the catalytic activity.
Recommended Citation
H. A. Elazab and T. T. El-Idreesy, "Polyvinylpyrrolidone - Reduced Graphene Oxide - Pd Nanoparticles As An Efficient Nanocomposite For Catalysis Applications In Cross-coupling Reactions," Bulletin of Chemical Reaction Engineering & Catalysis, vol. 14, no. 3, pp. 490 - 501, Universitas Diponegoro, Jan 2019.
The definitive version is available at https://doi.org/10.9767/bcrec.14.3.3461.490-501
Department(s)
Chemical and Biochemical Engineering
Publication Status
Open Access
Keywords and Phrases
Catalyst recycling; Cross-Coupling; Graphene; Heterogeneous catalysis; Microwave–assisted synthesis
International Standard Serial Number (ISSN)
1978-2993
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2023 Universitas Diponegoro, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Share Alike 4.0 License.
Publication Date
01 Jan 2019
