Effect of iron oxide nanoparticles functionalization by citrate analyzed using Mossbauer spectroscopy

被引：4
|
作者：
Ushakov, Michael V. [1 ]
Sousa, M. H. [2 ]
Morais, Paulo C. [3 ,4 ]
Kuzmann, Erno [5 ]
Semionkin, Vladimir A. [1 ]
Oshtrakh, Michael I. [1 ]
机构：
[1] Ural Fed Univ, Inst Phys & Technol, Ekaterinburg 620002, Russia
[2] Univ Brasilia, Fac Ceilandia, Green Nanotechnol Grp, BR-72220900 Brasilia, DF, Brazil
[3] Univ Catolica Brasilia, BR-70790160 Brasilia, DF, Brazil
[4] Univ Brasilia, Inst Phys, BR-70910900 Brasilia, DF, Brazil
[5] Eotvos Lorand Univ, Inst Chem, Lab Nucl Chem, Budapest, Hungary
来源：
HYPERFINE INTERACTIONS | 2020年 / 241卷 / 01期
关键词：
Mossbauer spectroscopy; Iron oxide nanoparticles; Surface functionalization; Hyperfine parameters;
D O I：
10.1007/s10751-020-1701-9
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
Comparison of the Mossbauer spectra of the as-prepared native iron oxide nanoparticles (IONs) and the citrate-functionalized IONs demonstrates differences in the spectral shapes at room temperature and variations of the Fe-57 hyperfine parameters at 80 K. The observed differences are claimed to result from capping the IONs with citrate, thus decreasing the particle-particle interaction while promoting interaction of the outer atomic layers of the IONs with the surface molecular coating.
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页数：9
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