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采用溶剂热法合成了Fe_3O_4/石墨烯复合粉体,并通过X射线衍射(XRD)、傅里叶转换红外光谱(FT-IR)、扫描电子显微镜(SEM)等测试手段,分析了溶剂热反应过程中PVP的添加与否对Fe_3O_4/石墨烯结构和形貌的影响。结果表明,若反应过程中添加PVP,所得样品中Fe_3O_4颗粒尺寸变小,但不影响Fe_3O_4的结构以及其颗粒在石墨烯上的负载;将溶剂热合成产物Fe_3O_4/G和Fe_3O_4/G-PVP分别在氩气保护下500C烧结后,Fe_3O_4/G-500样品中Fe_3O_4颗粒仍然完好的负载在石墨烯片上,样品Fe_3O_4/G-PVP-500中有大量的Fe_3O_4颗粒从石墨烯片上脱落,同时Fee_3O_4颗粒产生了粉碎,以此分析了PVP在溶剂热合成过程中的作用。
The Fe 3 O 4 / graphene composite powders were synthesized by solvothermal method. The effects of solvothermal reaction Effect of PVP addition on the structure and morphology of Fe_3O_4 / graphene during the process. The results showed that the particle size of Fe 3 O 4 particles in the sample was decreased, but the structure of Fe 3 O 4 and the loading of particles on graphene were not affected by adding PVP during the reaction. The thermal synthesis products of Fe 3 O 4 / G and Fe 3 O 4 / G-PVP The Fe 3 O 4 particles in Fe 3 O 4 / G-500 samples were still intact on the graphene sheets after 500C sintering under Ar protection. Fe_3O_4 / G-PVP-500 had a large amount of Fe_3O_4 particles falling off from the graphene sheets and the Fe_3O_4 particles Produced a smash, in order to analyze the role of PVP in solvothermal synthesis process.