Characterization and synthesis of Fe3O4@C nanoparticles by in-situ solid-phase method. (24th February 2021)

• Record Type: Journal Article
• Authors: Xiang, Hengli; Ren, Genkuan; Zhong, Yanjun; Yang, Xiushan; Xu, Dehua; Zhang, Zhiye; Wang, Xinlong
• Is Part Of: Materials research express. Volume 8:Number 2(2021)
• Publication Date: 2021-02-24
• Subjects: one-pot -- solid-phase method -- Fe3O4@C nanoparticles; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/abe21f
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: Fe3 O4 @C nanoparticles were successfully synthesized by an in situ solid-phase method using FeSO4, FeS2, and PVP K30 as the starting materials under the nitrogen atmosphere. In addition, the mechanism of the synthetic of Fe3 O4 @C nanoparticles was studied through in situ characterizations. The results showed that the pyrolysis of PVP K30 participated in the solid-phase reaction and resulted in the formation of carbon shells and a reduction in particle size. The structure of the Fe3 O4 @C nanoparticles was core–shell with the average particle size of ∼30 nm and the thickness of the carbon shell of ∼2 nm. Besides, the Raman spectrum revealed that the carbon shell mostly existed in the form of amorphous carbon. The surface area and the pore volume of the Fe3 O4 @C nanoparticles were estimated to be 37.74 m 2 g −1 and 0.227 cm 3 g −1 . Magnetization hysteresis curve exhibited the values of coercivity and remanence and saturation magnetization are found to be approximately 0.16 kOe, 12.8 emu g −1, and 77 emu g −1, respectively.