Solvothermal Synthesis and Characterization of Fe3O4 and γ-Fe2O3 Nanoplates

被引：288

作者：

Lu, Jian ^{[1
]}

Jiao, Xiuling ^{[1
]}

Chen, Dairong ^{[1
]}

Li, Wei ^{[1
]}

机构：

[1] Shandong Univ, Sch Chem & Chem Engn, Educ Minist, Key Lab Special Funct Aggregate Mat, Jinan 250100, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 10期

关键词：

IRON-OXIDE NANOPARTICLES; SIZE-CONTROLLED SYNTHESIS; ONE-POT REACTION; MAGNETIC-PROPERTIES; NANOCRYSTAL SYNTHESIS; FLUX-CLOSURE; HYDROTHERMAL SYNTHESIS; ORIENTED-AGGREGATION; ELECTRON-MICROSCOPY; LOW-TEMPERATURE;

D O I：

10.1021/jp810583e

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：

gamma-Fe2O3 nanoplates were prepared by a simple solution process and could be transformed to Fe3O4 nanoplates while keeping the size and morphology unchanged after reduction in hydrazine solution. The crystal structure and surface organic groups of the nanoplates were characterized in detail. The nanoplates exhibited good dispersibility in polar solvents except water and strong dipolar interactions, which favored the formation of one-dimensional chainlike structure. The poly(vinylpyrrolidone) molecules in this system played a key role for the growth of nanoplates, and it was supposed that the formation of nanoplates was a kinetically controlled process. The gamma-Fe2O3 and Fe3O4 nanoplates with strong dipolar interactions are ferromagnetic at room temperature.

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页码：4012 / 4017

页数：6

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