石墨烯/空心四氧化三铁/聚苯胺纳米复合材料的制备与表征

Preparation and characteristic of graphene/hollow ferroferric oxide/polyaniline nanocomposite

以天然石墨粉为原料,浓硫酸、高锰酸钾为氧化剂,采用改进的Hummerε法制备了氧化石墨烯(GO)。采用溶剂热法、原位聚合法,通过空心Fe_3O_4(H-Fe_3O_4)在GO片层上的原位生长和聚苯胺(PNAI)在石墨烯/H-Fe_3O_4复合材料表面的原位聚合,成功制备了石墨烯/H-Fe_3O_4/PNAI纳米复合材料。采用傅里叶变换红外光谱仪、X射线衍射仪、扫描电子显微镜等表征了复合材料的结构。结果表明:H-Fe_3O_4被成功负载在石墨烯表面,且复合材料中未出现GO在衍射角为10.24°的衍射峰,表明GO在溶剂热反应中,在乙二醇的作用下被成功还原成石墨烯。

The graphene oxide（GO） was prepared by means of improved Hummers method with natural graphite powders as raw material,concentrated sulfuric acid and potassium permanganate as oxidants.The graphene/hollow ferroferric oxid（H-Fe3O4） /polyaniline（PNAI） nanocompostie was successfully prepared by solvent hot method and in situ polymerization method through in situ growth of H-Fe3O4 on the layer of GO and in situ polymerization of PNAI on the surface of graphene/H-Fe3O4 nanocomposite.The structure of the composite was characterized by Fourier transform infrared spectroscopy（FTIR）,X-ray diffractometer（XRD）and scanning electron microscope（SEM）,etc.The results show that H-Fe3O4 is successfully loaded on the surface of the grapheme and the diffraction peak of GO in the composite with the diffraction angle of 10.24° was disappeared,which indicates that GO is reduced to graphene in the presence of ethylene glycol in the solvent hot reaction.