Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 10, Issue 51, Pages 44535-44545Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b19489
Keywords
catechol-formaldehyde resin; mussel-inspired; magnetic core-shell nanospheres; PdNPs; catalysis
Funding
- National Natural Science Foundation of China [21574017]
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Magnetic Fe3O4@catechol-formaldehyde resin (CFR) core-shell nanospheres were fabricated via a controllable hydrothermal method. The shell thickness of Fe3O4@CFR nanospheres can be effectively regulated in the range of 10-170 nm via adjusting reaction parameters. In particular, catechol groups on the surface of nanospheres also play a significant role in mussel-inspired chemistry to further combine with graphene oxide (GO) to wrap the Fe3O4@CFR spheres. The obtained Fe3O4@CFR and Fe3O4@CFR@GO nanospheres can be used as the effective catalyst supports of small Pd nanoparticles (PdNPs, <10 rim) formed via an in situ synthesis route. The as-fabricated nanohybrid catalysts of Fe3O4@CFR@PdNPs and Fe3O4@CFR@GO@PdNP5 with excellent dispersibility and stability are reusable after magnetic separation from catalytic systems. In particular, a super active performance was demonstrated for the catalytic reduction of methylene blue dye with highest turnover frequency (5260 min(-1)) yet reported in the literature using a very low dosage of the Fe3O4@CFR@GO@PdNP catalyst. In addition, the Fe3O4@CFR@GO@PdNP catalyst also exhibits a highly catalytic efficiency for the Suzuki coupling reaction using pure water as a green solvent at temperature.
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