DOI

  • Author: Huy, L.T.

    Hanoi University of Science and Technology, Viet Nam

  • Author: Tam, L.T.

    Hanoi University of Science and Technology, Viet Nam

  • Author: Phan, V.N.

    Hanoi University of Science and Technology, Viet Nam

  • Author: Trung, T.

    Hung Yen University of Technology and Education, Viet Nam

  • Author: Tung, L.M.

    Tien Giang University

  • Author: Thanh, D.T.N.

    Tien Giang University, Viet Nam

  • Author: Hoa, N.Q.

    Hanoi University of Science and Technology, Viet Nam

  • Author: Vinh, L.K.

    Vietnamese Academy of Science and Technology, Viet Nam

  • Author: Ngo, D.T.

    Technical University of Denmark, Viet Nam

  • Author: Mølhave, Kristian

    Molecular Windows, Department of Micro- and Nanotechnology, Technical University of Denmark, Ørsteds Plads, 2800, Kgs. Lyngby, Denmark

  • Author: Le, A.-T.

    Hanoi University of Science and Technology, Viet Nam

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In the present work, magnetic manganese ferrite/silver (MnFe2O4-Ag) composite nanoparticles were synthesized by wet chemistry method. This synthesis process consists of two steps: first, the seed of manganese ferrite nanoparticles (MnFe2O4 NPs) was prepared by a coprecipitationmethod; second, growth of silver nanoparticles (AgNPs) on the MnFe2O4 seed by modified photochemical reaction. We have conducted systematically the effects of synthesis parameters such as pH value, synthesis time, precursor salts concentration, mass ratio and stabilizing agents on the structure and magnetic properties of nanocomposites. In an optimized condition of synthesis parameters, the high quality MnFe2O4 NPs are obtained at pH value = 13, Mn2+ cation concentration= 0.4 M and synthesis time about 105 min; and the use of PVP stabilizing agent is found to optimize the formation of Ag-NPs on the surface of MnFe2O4 NPs. The as-prepared MnFe2O4-Ag magnetic nanocomposites display excellent properties of high crystallinity, long-term aggregation stability in aqueous medium, large saturation magnetization in the range of 15-20 emu/g, and small sizes of Ag-NPs similar to 20 nm. These exhibited properties made the MnFe2O4-Ag nanocomposites attractive candidate for various technological applications in biomedicine, catalyst and environmental monitoring.
Original languageEnglish
JournalJournal of Nanoscience and Nanotechnology
Volume16
Issue number8
Pages (from-to)7919-7928
Number of pages10
ISSN1533-4880
DOIs
StatePublished - 2016
CitationsWeb of Science® Times Cited: 0

    Keywords

  • MnFe2O4-Ag, Magnetic Nanocomposites, Ferromagnetic, Coprecipitation, Photochemical
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