The Solution Dependence of Cu Modification During the Synthesis of γ-Fe2O3 Nanoparticles

Yue Qiang Lin; Hong Mao; Jian Li

doi:10.4028/www.scientific.net/KEM.680.261

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 680The Solution Dependence of Cu Modification During...

The Solution Dependence of Cu Modification During the Synthesis of γ-Fe₂O₃ Nanoparticles

Abstract:

During the synthesis of γ-Fe₂O₃ nanoparticles by a chemically-induced transition method in FeCl₂ solution, Cu modification was attempted by adding CuCl/NaOH or CuCl₂/NaOH to the solution. The as-prepared products were characterized using VSM, TEM, EDS, XRD, and XPS. When adding a NaOH solution with a certain concentration, the components of the as-prepared products changed in relation to the copper salt used. When CuCl 2.5 × 10^-3 M was used, γ-Fe₂O₃/CuFeO₂ composite nanoparticles coated by FeCl₃·6H₂O and with an average size of 11.47 nm were formed. When the CuCl concentration increased to 5 × 10^-2 M, a mixture of γ-Fe₂O₃/CuFeO₂ and Cu (OH)Cl nanoparticles was formed. When 5 × 10^-2 M CuCl₂ was used, the final product contained γ-Fe₂O₃ nanoparticles, coated with FeCl₃·6H₂O, and Cu (OH)Cl nanoparticles. The magnetization of the as-prepared products depends on the content of the γ-Fe₂O₃ and CuFeO₂ ferrites.

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Periodical:

Key Engineering Materials (Volume 680)

Pages:

261-266

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.680.261

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Online since:

February 2016

Authors:

Yue Qiang Lin, Hong Mao, Jian Li*

Keywords:

Chemical Synthesis, Nanoparticles, γ-Fe₂O₃

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