Hairy carbon nanotube@nano-Pd heterostructures: design, characterization, and application in Suzuki C-C coupling reaction.
Poly(glycidyl methacrylate), PGMA, was prepared via ATRP in bulk solution, and its epoxy groups were further acid-hydrolyzed in order to obtain a polymer with glycerol moieties (noted POH). The POH chain end C-Br bonds were subjected to a nucleophilic attack by NaN(3), resulting in azide-terminated POH (POH-N(3)). The CNTs were modified by in-situ-generated alkynylated diazonium cations from the para-alkynylated aniline of the formulas H(2)N-C(6)H(4)-C≡C-H, yielding CNT-C(6)H(4)-C≡C-H nanotubes. The azide-functionalized polymer POH-N(3) was clicked to the alkynyl-modified CNTs giving CNT@POH hybrids, which were further subjected to an oxidation resulting in carboxylated polymer-modified CNTs (noted CNT@PCOOH). The as-designed hairy CNTs served as efficient platforms for the in-situ synthesis and massive loading of 3 nm sized palladium nanoparticles (NPs). The CNT@PCOOH@Pd heterostructures prepared so far exhibited an efficient catalytic effect in the C-C Suzuki coupling reaction and were regenerated up to four times without any significant loss of catalytic activity.
Mahouche Chergui
Samia
S
ITODYS, University Denis Diderot & CNRS (UMR 7086), 15 rue Jean de Baïf, 75013 Paris, France. mahouche.samia@gmail.com
Ledebt
Alexandre
A
Mammeri
Fayna
F
Herbst
Frédéric
F
Carbonnier
Benjamin
B
Ben Romdhane
Hatem
H
Delamar
Michel
M
Chehimi
Mohamed M
MM