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Anchoring Fe3O4 nanoparticles in a reduced graphene oxide aerogel matrix via polydopamine coating.

ABSTRACT: Reduced graphene oxide-magnetite hybrid aerogels attract great interest thanks to their potential applications, e.g., as magnetic actuators. However, the tendency of magnetite particles to migrate within the matrix and, ultimately, escape from the aerogel structure, remains a technological challenge. In this article we show that coating magnetite particles with polydopamine anchors them on graphene oxide defects, immobilizing the particles in the matrix and, at the same time, improving the aerogel structure. Polydopamine coating does not affect the magnetic properties of magnetite particles, making the fabricated materials promising for industrial applications.

SUBMITTER: Scheibe B

PROVIDER: S-EPMC5827803 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Anchoring Fe<sub>3</sub>O<sub>4</sub> nanoparticles in a reduced graphene oxide aerogel matrix via polydopamine coating.

Scheibe Błażej B Mrówczyński Radosław R Michalak Natalia N Załęski Karol K Matczak Michał M Kempiński Mateusz M Pietralik Zuzanna Z Lewandowski Mikołaj M Jurga Stefan S Stobiecki Feliks F

Beilstein journal of nanotechnology 20180215

Reduced graphene oxide-magnetite hybrid aerogels attract great interest thanks to their potential applications, e.g., as magnetic actuators. However, the tendency of magnetite particles to migrate within the matrix and, ultimately, escape from the aerogel structure, remains a technological challenge. In this article we show that coating magnetite particles with polydopamine anchors them on graphene oxide defects, immobilizing the particles in the matrix and, at the same time, improving the aerog ...[more]

PMID: 29527434

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