The invention discloses a three-dimensional layered graphene / gamma Fe2O3 nano magnetic film array and its synthesis method, with the invention of graphene / gamma ferric oxide nano composite preparation of 20wt% graphene / gamma ferric oxide paraffin composite film materials, the calculation results of electromagnetic wave reflectivity measured by electromagnetic parameters and different film thickness the results show that: the use of graphene / gamma ferric oxide nano composite films prepared in the thickness of 2-5 mm, the absorption intensity reached -15dB, the absorption frequency width. The preparation of thin film materials required for a very small proportion of the film material, graphene / gamma ferric oxide material content is less than 20wt%, so use less material, film made of lighter, more conducive to industrial production, also applied more widely.
【技术实现步骤摘要】
【技术保护点】
一种分层三维石墨烯/γ?三氧化二铁磁性纳米片阵列的合成方法,其特征在于包括以下步骤:(1)G/β?FeOOH模板的制备:向石墨烯水溶液中加入Fe(NO3)3·9H2O,石墨烯和Fe(NO3)3·9H2O质量比为1∶100,并将获得的混合溶液在50℃下搅拌两个小时;然后将获得的沉淀物离心分离出来,用蒸馏水和乙醇清洗后,在真空环境下干燥;(2)G/β?FeOOH纳米片阵列的合成:将FeCl3·6H2O溶于水,加入硝酸钠;溶解后加入G/β?FeOOH模板,超声至分散均匀;5克FeCl3·6H2O对应模板的用量为0.15克;置于高压釜内60℃,水热反应12小时;沉淀用蒸馏水和乙醇清洗几次,在真空的环境下干燥;(3)石墨烯/γ?三氧化二铁纳米复合材料的制备:将已干燥的G/β?FeOOH纳米片陈列在空气下加热到300℃,退火处理2个小时,即得所需产品。
【技术特征摘要】
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