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Palladium nanoparticles supported on graphene acid: a stable and eco-friendly bifunctional C-C homo- and cross-coupling catalyst
Blanco, Matias; Mosconi, Dario; Tubaro, Cristina; Biffis, Andrea; Badocco, Denis; Pastore, Paolo; Otyepka, Michal; Bakandritsos, Aristides; Liu, Zhibo; Ren, Wencai; Agnoli, Stefano; Granozzi, Gaetano
2019-10-07
Source PublicationGREEN CHEMISTRY
ISSN1463-9262
Volume21Issue:19Pages:5238-5247
AbstractA mild impregnation of graphene acid (GA) with Pd(OAc)(2) yields Pd nanoparticles with a size that can be easily controlled by the amount of the Pd precursor, and with a sharp and tunable size distribution ranging from 1 nm up to 9 nm. The spectroscopic and microscopic characterization of the GA-Pd composites reveals a strong interaction between the metal and the carboxyl groups of the GA support, and suggests a nanoparticle growth mechanism entailing counterion metathesis followed by a GA promoted reduction. The GA-Pd nanohybrids are highly active catalysts in the Suzuki-Miyaura cross coupling reaction under environmentally-friendly conditions. TOF values exceeding 30 000 h(-1), high selectivity toward the coupling product and versatility for a large variety of substrates are reported. Given the large amount of carboxyl groups, the catalysts are exceptionally stable, and no appreciable metal leaching is observed during the reaction. Notably, at variance with conventional carbon and graphene supports, the GA supported Pd nanoparticles show a bifunctional activity and can yield biphenyl adducts upon oxidative homocoupling of arylboronic acids.
Indexed BySCI
Language英语
WOS IDWOS:000488459900030
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80710
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Blanco, Matias,Mosconi, Dario,Tubaro, Cristina,et al. Palladium nanoparticles supported on graphene acid: a stable and eco-friendly bifunctional C-C homo- and cross-coupling catalyst[J]. GREEN CHEMISTRY,2019,21(19):5238-5247.
APA Blanco, Matias.,Mosconi, Dario.,Tubaro, Cristina.,Biffis, Andrea.,Badocco, Denis.,...&Granozzi, Gaetano.(2019).Palladium nanoparticles supported on graphene acid: a stable and eco-friendly bifunctional C-C homo- and cross-coupling catalyst.GREEN CHEMISTRY,21(19),5238-5247.
MLA Blanco, Matias,et al."Palladium nanoparticles supported on graphene acid: a stable and eco-friendly bifunctional C-C homo- and cross-coupling catalyst".GREEN CHEMISTRY 21.19(2019):5238-5247.
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