Solvothermal synthesis and ferromagnetic property of bamboo-shoot-like oriented carbon micromaterials  

作　　者：YANG YongZhen1,2,LIU XuGuang1,3,REN WenFang1,3,QIU Li1,3 & XU BingShe1,2 1Key Laboratory of Interface Science and Engineering in Advanced Materials(Taiyuan University of Technology),Ministry of Education,Taiyuan 030024,China 2College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China 3College of Chemistry and Chemical Engineering,Taiyuan University of Technology,Taiyuan 030024,China 

出　　处：《Chinese Science Bulletin》2010年第33期3838-3841,共4页

基　　金：supported by International S&T Co-operation Program(2007DFA50940);Program for New Century Excellent Talent in University(NCET-06-0262);Natural Science Foundation of Shanxi Province(2009011012-4);Shanxi Research Fund for Returned Scholars(2008-31);Taiyuan S&T Program(08121024)

摘　　要：Bamboo-shoot-like oriented carbon micromaterials(BOCMs)were synthesized by a solvothermal method at 450°C for 4 h using deoiled asphalt(DOA)as carbon source,toluene as solvent,ferrocene as catalyst precursor and amphiphilic triblock copolymer P123 as surfactant.The morphology and structure of the products were characterized by X-ray diffraction,field emission scanning electron microscopy,high resolution transmission electron microscopy and Fourier transform infrared spectroscopy.The results reveal that the obtained products have good distribution with uniform diameters of about 0.5 ?m and the lengths of 1-1.5 μm,and hydrogen-carbon bonds are observed on the surface of BOCMs.The growth mechanism of BOCMs is discussed,in which that the catalysis of ferrocene and the dispersion and assembly of the aromatic molecules of DOA directed by P123 are critical to the formation of the BOCMs.The coercivity value(231.91 Oe)from the measurement of a vibrating sample magnetometer shows that the BOCMs have an obvious ferromagnetic behavior.Bamboo-shoot-like oriented carbon micromaterials （BOCMs） were synthesized by a solvothermal method at 450℃ for 4 h using deoiled asphalt （DOA） as carbon source, toluene as solvent, ferrocene as catalyst precursor and amphiphilic triblock copolymer P123 as surfactant. The morphology and structure of the products were characterized by X-ray diffraction, field emission scanning electron microscopy, high resolution transmission electron microscopy and Fourier transform infrared spectroscopy. The results reveal that the obtained products have good distribution with uniform diameters of about 0.5 pan and the lengths of 1-1.5 ptm, and hydrogen-carbon bonds are observed on the surface of BOCMs. The growth mechanism of BOCMs is discussed, in which that the catalysis of ferrocene and the dispersion and assembly of the aromatic molecules of DOA directed by P123 are critical to the for- mation of the BOCMs. The coercivity value （231.91 Oe） from the measurement of a vibrating sample magnetometer shows that the BOCMs have an obvious ferromagnetic behavior.

关 键 词：溶剂热合成 铁磁性 碳源 场发射扫描电子显微镜 高分辨透射电子显微镜 傅里叶变换红外光谱 两亲嵌段共聚物 振动样品磁强计 

分 类 号：TB321[一般工业技术—材料科学与工程]