Free and partially encapsulated manganese ferrite nanoparticles in multiwall carbon nanotubes

被引：6

作者：

Al-Khabouri, Saja ^{[1
]}

Al-Harthi, Salim ^{[1
]}

Maekawa, Toru ^{[2
]}

Elzain, Mohamed E. ^{[1
]}

Al-Hinai, Ashraf ^{[3
]}

Al-Rawas, Ahmed D. ^{[1
]}

Gismelseed, Abbsher M. ^{[1
]}

Yousif, Ali A. ^{[1
]}

Myint, Myo Tay Zar ^{[1
]}

机构：

[1] Sultan Qaboos Univ, Dept Phys, Muscat 123, Oman

[2] Toyo Univ, Bionano Elect Res Ctr, 2100 Kujirai, Kawagoe, Saitama 3508585, Japan

[3] Sultan Qaboos Univ, Dept Chem, Muscat 123, Oman

来源：

BEILSTEIN JOURNAL OF NANOTECHNOLOGY | 2020年 / 11卷

关键词：

carbon nanotubes; charge transfer; manganese ferrite; metallic nanoparticles; partial encapsulation; stress; surface; DEPENDENT CURIE-TEMPERATURE; MAGNETIC-PROPERTIES; ELECTRONIC-STRUCTURE; MNFE2O4; SIZE; FE; NANOCOMPOSITES; REDUCTION; ZN;

D O I：

10.3762/bjnano.11.170

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Free and partially encapsulated manganese ferrite (MnFe2O4) nanoparticles are synthesized and characterized regarding structure, surface, and electronic and magnetic properties. The preparation method of partially encapsulated manganese ferrite enables the formation of a hybrid nanoparticle/tube system, which exhibits properties of manganese ferrite nanoparticles inside and attached to the external surface of the tubes. The effect of having manganese ferrite nanoparticles inside the tubes is observed as a shift in the X-ray diffraction peaks and as an increase in stress, hyperfine field, and coercivity when compared to free manganese ferrite nanoparticles. On the other hand, a strong charge transfer from the multiwall carbon nanotubes is attributed to the attachment of manganese ferrite nanoparticles outside the tubes, which is detected by a significant decrease in the a band emission of the ultraviolet photoemission spectroscopy signal. This is followed by an increase in the density of states at the Fermi level of the attached manganese ferrite nanoparticles in comparison to free manganese ferrite nanoparticles, which leads to an enhancement of the metallic properties.

引用

页码：1891 / 1904

页数：14

共 47 条

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