Atomic pair distribution function (PDF) study of iron oxide nanoparticles in aqueous suspension

被引：7
|
作者：
Di Marco, Mariagrazia [2 ,4 ]
Ballirano, Paolo [3 ]
Port, Marc [4 ]
Piscopiello, Emanuela [5 ]
Couvreur, Patrick [2 ]
Dubernet, Catherine [2 ]
Sadun, Claudia [1 ]
机构：
[1] Univ Roma La Sapienza, Dipartimento Chim, I-00185 Rome, Italy
[2] Univ Paris 11, CNRS, UMR 8612, F-92926 Chatenay Malabry, France
[3] Univ Roma La Sapienza, Dipartimento Sci Terra, I-00185 Rome, Italy
[4] Guerbet, Ctr Rech, F-95943 Roissy, France
[5] ENEA, CR Brindisi, FIM Dept, I-72100 Brindisi, Italy
来源：
JOURNAL OF MATERIALS CHEMISTRY | 2009年 / 19卷 / 35期
关键词：
X-RAY-DIFFRACTION; PARAMETERS; PARTICLES; SURFACE; USPIO; SIZE;
D O I：
10.1039/b911062c
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Size is the key regulating the crystalline structure of iron oxide nanoparticles. The effect of the crystal size on the microstructure of these nanoparticles was investigated in an aqueous dilute suspension by energy dispersive X-ray diffraction (EDXD) and in an aqueous concentrated suspension by X-ray powder diffraction (XRD), at 293 K. Nanoparticle structure was also investigated by HRTEM. Structural results were interpreted in terms of theoretical models built using structural parameters obtained by the Rietveld method on XRD. The ability of the pair distribution function (PDF) to measure medium-range correlation lengths and size in nanoscale crystalline materials was also investigated and discussed. The sensitivity of the PDF technique allowed modelling of sample polydispersity.
引用
收藏
页码：6354 / 6360
页数：7
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