Institute of Biomass Chemistry and Technology, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, PR China.
Department of Materials Chemistry, the Ångström Laboratory, Uppsala University, Uppsala 75121, Sweden.
Mater Sci Eng C Mater Biol Appl. 2012 Aug 1;32(6):1511-7. doi: 10.1016/j.msec.2012.04.033. Epub 2012 Apr 28.
Nanocomposites of cellulose/iron oxide have been successfully prepared by hydrothermal method using cellulose solution and Fe(NO3)3·9H2O at 180 °C. The cellulose solution was obtained by the dissolution of microcrystalline cellulose in NaOH/urea aqueous solution, which is a good system to dissolve cellulose and favors the synthesis of iron oxide without needing any template or other reagents. The phases, microstructure, and morphologies of nanocomposites were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectra (EDS). The effects of the heating time, heating temperature, cellulose concentration, and ferric nitrate concentration on the morphological behavior of products were investigated. The experimental results indicated that the cellulose concentration played an important role in both the phase and shape of iron oxide in nanocomposites. Moreover, the nanocomposites synthesized by using different cellulose concentrations displayed different thermal stabilities.
纤维素/氧化 铁纳米复合材料通过水热法成功制备，使用纤维素溶液和 Fe(NO3)3·9H2O 在 180°C。纤维素溶液是通过微晶纤维素在 NaOH/尿素水溶液中的溶解获得的，这是一种溶解纤维素的良好体系，有利于在不需要任何模板或其他试剂的情况下合成氧化 铁。通过 X 射线粉末衍射 (XRD)、扫描电子显微镜 (SEM) 和能谱 (EDS) 对纳米复合材料的相、微观结构和形貌进行了表征。考察了加热时间、加热温度、纤维素浓度和硝酸铁浓度对产物形态行为的影响。实验结果表明，纤维素浓度对纳米复合材料中氧化 铁的相和形状都起着重要作用。此外，使用不同纤维素浓度合成的纳米复合材料显示出不同的热稳定性。
