Preparation of element block by surface modification of magnetite nanoparticles and their application

Atsuo Kamura, Naokazu Idota, Yoshiyuki Sugahara

    Research output: Contribution to journalReview article

    Abstract

    Element blocks, which are composed of various elements, have been widely studied due to their potential application in electric, optical, magnetic and biological fields. Element blocks can be used as functional materials without any further modifications, but it is also possible to polymerize them to prepare element block polymer materials, which are expected to be a series of new functional materials. Magnetite is one of the well-known magnetic oxides, and magnetite nanoparticles are known to exhibit superparamagnetism. In this review, we focus on surface-modified magnetite nanoparticles which can be considered as element blocks. Surface modification of magnetite nanoparticles has been achieved by using silane coupling agents, phosphorus coupling agents, carboxylic acids or alkyl amines based on according to purpose and application to improve their dispersibility and biocompatibility. And magnetite nanoparticles with grafted polymers are potentially useful to the fabrication of magnetite-based medical and biomedical materials. These element blocks prepared from magnetite nanoparticles via surface modification can be applicable to various applications including drug delivery system, hyperthermia and separation of biological matters or heavy metal ions. Examples are demonstrated for typical applications.

    Original languageEnglish
    Pages (from-to)116-120
    Number of pages5
    JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
    Volume64
    Issue number3
    Publication statusPublished - 2017 Mar 1

    Fingerprint

    Magnetite Nanoparticles
    Magnetite nanoparticles
    Surface treatment
    Ferrosoferric Oxide
    Functional materials
    Coupling agents
    Magnetite
    Superparamagnetism
    Silanes
    Carboxylic Acids
    Heavy Metals
    Heavy ions
    Carboxylic acids
    Biocompatibility
    Phosphorus
    Oxides
    Heavy metals
    Block copolymers
    Amines
    Metal ions

    Keywords

    • Element block
    • Magnetite nanoparticles
    • Superparamagnetism
    • Surface modification

    ASJC Scopus subject areas

    • Mechanical Engineering
    • Metals and Alloys
    • Industrial and Manufacturing Engineering
    • Materials Chemistry

    Cite this

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    AU - Idota, Naokazu

    AU - Sugahara, Yoshiyuki

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    AB - Element blocks, which are composed of various elements, have been widely studied due to their potential application in electric, optical, magnetic and biological fields. Element blocks can be used as functional materials without any further modifications, but it is also possible to polymerize them to prepare element block polymer materials, which are expected to be a series of new functional materials. Magnetite is one of the well-known magnetic oxides, and magnetite nanoparticles are known to exhibit superparamagnetism. In this review, we focus on surface-modified magnetite nanoparticles which can be considered as element blocks. Surface modification of magnetite nanoparticles has been achieved by using silane coupling agents, phosphorus coupling agents, carboxylic acids or alkyl amines based on according to purpose and application to improve their dispersibility and biocompatibility. And magnetite nanoparticles with grafted polymers are potentially useful to the fabrication of magnetite-based medical and biomedical materials. These element blocks prepared from magnetite nanoparticles via surface modification can be applicable to various applications including drug delivery system, hyperthermia and separation of biological matters or heavy metal ions. Examples are demonstrated for typical applications.

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