Time-Resolved In Situ Synchrotron X-ray Study and Large-Scale Production of Magnetite Nanoparticles in Supercritical Water

被引:76
作者
Bremholm, Martin
Felicissimo, Marcella
Iversen, Bo B. [1 ]
机构
[1] Univ Aarhus, Dept Chem, Ctr Energy Mat, DK-8000 Aarhus C, Denmark
关键词
crystal growth; magnetite; nanostructures; supercritical fluids; X-ray diffraction; HYDROTHERMAL CRYSTALLIZATION; SIZE; PARTICLES; NANOCRYSTALS; TRANSITIONS; FLUIDS; CELLS;
D O I
10.1002/anie.200901048
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A general solution: In situ synchrotron X-ray scattering in a high-pressure pulsed injection reactor (see picture) shows that magnetite nucleation and growth are temporally separated. Gram-scale crystalline, pure phase, superparamagnetic magnetite nanoparticles were synthesized without surfactants in supercritical water in less than one hour using a laboratoryscale continuous-flow reactor. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码:4788 / 4791
页数:4
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