Structure Analysis of Fe3O4@SiO2 Core Shells Prepared from Amorphous and Crystalline SiO2 Particles

5th International Conference on Advanced Materials Sciences and Technology

Munasir^1,2 ; Dewanto, A.S.^1 ; Kusumawati, D.H.^1,2 ; Putri, N.P.^1,2 ; Yulianingsih, A.^1 ; Sa'Adah, I.K.F.^1 ; Taufiq, A.^3 ; Hidayat, N.^3 ; Sunaryono, S.^3 ; Supardi, Z.A.I.^1,2

Department of Physics, Faculty of Mathematics and Natural Science, Universitas Negeri Surabaya, Jl. Ketintang, Surabaya

60231, Indonesia^1

Research Center for Advanced Materials, Universitas Negeri Surabaya, Jl. Ketintang, Surabaya

60231, Indonesia^2

Department of Physics, Faculty of Mathematics and Natural Science, Universitas Negeri Malang, Jl. Semarang 5, Malang

64145, Indonesia^3

关键词: Amorphous structures;    Coprecipitation method;    Core shell;    Crystalline phasis;    Different particle sizes;    Fe3O4@SiO2;    Iron sand;    SiO2 Nanoparticles;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/367/1/012010/pdf
DOI  :  10.1088/1757-899X/367/1/012010

来源: IOP

【 摘 要 】

This article reports the results synthesis of crystalline (Fe3O4@c-SiO2) and amorphous (Fe3O4@a-SiO2) nanoparticles from natural resources (iron sand and silica sand). The synthesis of Fe3O4and SiO2nanoparticles used co-precipitation and hydrothermal-coprecipitation methods with polyethylene glycol (PEG) 4000 as a template. The XRD data analysis presented that the amorphous SiO2particles were successfully produced using hydrothermal and co-precipitation methods. The XRD data analysis also presented that the crystalline phases were formed in quartz and tridymite phases after calcination process of the amorphous phase. SEM images exhibited that the amorphous phase had different particle size and morphology from the crystalline phase. FTIR spectra presented some absorption peaks of new functional groups indicating the existence of Si-O-Si (silanol), Fe-O, C-N, and Fe-O-Si as new functional groups.