碳气凝胶修饰纳米α-Fe_2O_3的可控制备及表征

Controlled Synthesis and Characterization of α-Fe_2O_3 Nanoparticle by Modification of Carbon Aerogel

通过水热反应和碳气凝胶(CA)修饰的方法制备了α-Fe_2O_3@CA复合材料,探讨了水热合成温度、时间和添加活性剂对合成复合材料的影响,采用XRD、SEM和TGA等方法对材料的结构、形貌和α-Fe_2O_3负载数量进行了表征.研究结果表明,采用水热合成法可以在碳气凝胶表面修饰空心球状和橄榄球状α-Fe_2O_3,且负载α-Fe_2O_3的数量与水热时间有关.200℃下水热合成24 h时,α-Fe_2O_3在复合材料中负载高达96.53%.

The α-Fe2O3@CA particles were prepared by a simple hydrothermal method and modification of carbon aerogel, and this study focuses on the structure, morphology and α-Fe2O3 loading content. Both the structure, the morphology and α-Fe2O3 loading content of the α-Fe2O3@CA were characterized by XRD, SEM and TGA. The results show that hollow spherical and rugby-like α-Fe2O3 are loaded on the carbon aerogel by hydrothermal method, and the α-Fe2O3 loading content is related to the hydrothermal time. The loading of α-Fe2O3 was up to 96.53wt%, when 24 h by hydrothermal synthesis at 200℃.