Controlled synthesis of monodisperse core–shell γ-Fe 2 O 3 @SiO 2 nanoparticles with well-dispersed γ-Fe 2 O 3 seeds

Micro & nano letters

article

Keran Li¹  Jiahe Yan¹  Lang Luo¹  Zhiheng He¹  Lingling Zhou¹  Feng Gao¹ 

[1] School of Chemistry and Chemical Engineering, Southwest Petroleum University

关键词: transmission electron microscopy;    iron compounds;    solubility;    nanofabrication;    X-ray diffraction;    scanning electron microscopy;    nanoparticles;    Raman spectra;    silicon compounds;    aqueous solution;    transmission electron microscopy;    X-ray diffraction analysis;    Raman spectrum;    water-soluble monodisperse;    tetramethylammonium hydroxide;    monodisperse core-shell nanoparticles;    water-soluble monodisperse nanoparticles;    nanoparticle morphology;    nanoparticle structure;    Fe2O3-SiO2;   

DOI  :  10.1049/mnl.2019.0626

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Fe 2 O 3 @SiO 2 nanoparticles with well-dispersed γ-Fe 2 O 3 seeds were prepared in aqueous solution using a simple one-step method. Transmission electron microscopy, X-ray diffraction analysis, and Raman spectrum were used to characterise the morphology and structure of γ-Fe 2 O 3 and γ-Fe 2 O 3 @SiO 2 nanoparticles. The concentration of tetramethylammonium hydroxide (TMAOH) was found to be very influential in the control of the morphology of γ-Fe 2 O 3 @SiO 2 nanoparticles. Water-soluble monodisperse γ-Fe 2 O 3 @SiO 2 nanoparticles with well-dispersed γ-Fe 2 O 3 seeds were successfully synthesised when the concentration of TMAOH is 0.015 M.

【 授权许可】

CC BY|CC BY-ND|CC BY-NC|CC BY-NC-ND