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solvothermal route to Prepare the Metastable Phase 3c-Fe_7S_8 with Hexagonal Platelet Morphology

Chinese Chemical Letters 2003年第1期14卷 83-86页

作者： Xian Yun XU Xiao Guang LI DepartmentofMatcrialsScienceandEngineering.UniversityofScienceandTechnologyofChina Hefei230026 DepartmentofMatcrialsScienceandEngineering.UniversityofScienceandTechnologyofChina

The metastable phase 3c-Fe7S8 with the hexagonal platelet morphology has been prepared by using solvothermal route. The product was characterized by means of X-ray powder diffraction (XRD) and transmission electron microscopy (TEM) and X-ray photoelectron spectra (XPS). The experiment results show that the as-prepared Fe7S8 is a metastable phase with the hexagonal platelet morphology.

关键词： c-Fe_7S_8 solvothermal route hexagonal platelet.

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Synthesis of Rod-like Ternary Carbide LaNiC_2 by a solvothermal route

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Journal of Wuhan University of Technology(Materials Science) 2007年第2期22卷 253-255页

作者：米远祝刘应亮 Department of Chemistry Jinan University

LaNiC2 was synthesized by a solvothermal route in a stainless steel autoclave at 600℃. In this process, nickel chloride, lanthanum chloride and toluene were used as raw materials, and metallic Na and Li alloy were used as reductant. The products were characterized with an X-ray diffractometer （XRD） and a scanning electron microscope （SEM）. The LaNiC2 products consisted of a great deal of micro-rods. The micro-rods had diameters ranging from hundreds of nanometers to several micrometers and lengths ranging from several micrometers to tens of micrometers.

关键词： micro-rod LaNiC2 solvothermal route

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Facile Synthesis Ferrite CoFe2O4 Particles with Shape and Size Control for the Influence on Magnetic Properties

Facile Synthesis Ferrite CoFe2O4 Particles with Shape and Si...

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中国化学会第九届全国无机化学学术会议

作者： Wang Wen Niu Haijun Jia Dechang Zhou Yu School of Materials Science and Engineering Harbin Institute of Technology School of Chemical and Chemical Engineering Heilongjiang university

Micro/nano magnetic materials have been of great interest over the past several years for the fundamental understanding of micro/nano-magnetism and for their technological applications. In particular, advances that receive widespread attention are those that broaden the scope of magnetic materials in the technology arena. Transition metal oxides such as the ferrites are particularly useful as they combine interesting magnetic and electrical properties with stability against oxidation. Thus, these ferrites constitute an important class of materials that are used extensively in the field of magnetic memory. CoFe2O4 ferrite（CFO）, which is a well-known inverse spinel with Co2+ ions on B sites and Fe3+ ions distributed equally among A and B sites, is the most commercially significant member of the magnetic ferrites class. Various synthetic strategies have been devoted to preparing CoFe2O4 particles with controlled size and shape. A range of methods include coprecipitation, sol–gel methods, thermal decomposition, combustion reaction, and hydrothermal synthesis. The properties of the obtained products depended on preparation condition, including precursors, solvents, temperature, reaction time and p H value. In most cases, ferrites have been prepared by coprecipitation method. Aqueous coprecipitation has proven to be an economic and versatile technique, which is suitable for synthesis of materials with reasonable control of composition. However, controlled size growth of nanoparticles is always a difficult task. Moreover, the above said methods encounter some disadvantages such as the requirement of complicated equipment, high-energy consuming, and higher processing temperature and also require rather long reaction time caused by the multiple steps（calcinations） to complete the crystallization. In the present work, we report a solvothermal route to one-step synthesis of CoFe2O4 particles using hexadecyl trimethyl ammonium Bromide（CTAB） as surfactant and absolute ethylalcoh

关键词： CoFe2O4 solvothermal route CTAB multihole cubelike

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