Cu(I) Modification during γ-Fe2O3 Nanoparticles Synthesis and Subsequent Characterization. (10th December 2015)

• Record Type: Journal Article
• Authors: Mao, Hong; Qiu, Xiaoyan; Li, Decai; Lin, Yueqiang; Liu, Xiaodong; Li, Jian
• Other Names: Pons Josefina Academic Editor.
• Is Part Of: Journal of chemistry. Volume 2015(2015)
• Publication Date: 2015-12-10
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1155/2015/573657
• Languages: English
• ISSNs: 2090-9063

Abstract

Abstract : During the synthesis of the γ -Fe2 O3 nanoparticles via the chemically induced transition method, Cu(I) modification has been attempted by adding CuCl/NaOH to the treatment solution. The experimental results showed that, under the condition of a NaOH content equal to 0.04 moles, when the content of CuCl is as low as1.25 × 10 - 3 or2.50 × 10 - 3 moles, the products are single γ -Fe2 O3 /Cu(I)FeO2 /FeCl3 ·6H2 O composite nanoparticles, whereas when the content of CuCl is higher, 5 × 10 - 2 moles, the product is a mixture consisting of γ -Fe2 O3 /Cu(I)FeO2 /FeCl3 ·6H2 O nanoparticles and Cu(II)(OH)Cl nanoparticles. For the γ -Fe2 O3 /Cu(I)FeO2 /FeCl3 ·6H2 O composite nanoparticles, the Cu(I)FeO2 interface layer is not thick enough to form one unit cell, but it can modify the formation of a FeCl3 ·6H2 O surface layer and the effective magnetization of the γ -Fe2 O3 core.