Zeta电位
乙二胺四乙酸
成核
傅里叶变换红外光谱
纳米颗粒
表面改性
纳米结构
透射电子显微镜
化学工程
降水
材料科学
化学
分析化学(期刊)
核化学
无机化学
纳米技术
物理化学
螯合作用
有机化学
工程类
气象学
物理
作者
Aroldo Geraldo Magdalena,I.M.B. Silva,Rodrigo Fernando Costa Marques,Angelo Ricardo Fávaro Pipi,Paulo Noronha Lisboa‐Filho,Miguel Jafelicci
标识
DOI:10.1016/j.jpcs.2017.10.002
摘要
This study analyzes the synthesis and characterization of functionalized Fe3O4 nanoparticles by ethylenediaminetetraacetic acid (EDTA). The syntheses were performed using the co-precipitation method under different experimental conditions: nitrogen atmosphere versus ambient atmospheric conditions, and temperatures of 25 °C versus 90 °C. X-ray diffraction techniques, Fourier transform infrared (FTIR) spectroscopy, zeta potential, and transmission electron microscopy (TEM) were used to characterize these nanoparticles. The co-precipitation method produced high homogeneity in nanostructure shape and size. The functionalization of the magnetite surface was confirmed by the FTIR analyses and the development of new bands associated with EDTA as well as by zeta potential change. The addition of EDTA was also found to change the mechanism of nucleation and nanostructure growth; EDTA was found to favor nucleation, thus decreasing nanoparticle size.
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