通过对石墨氧化制备不同浓度的氧化石墨烯溶液,利用3种不同的麦勒棒制备氧化石墨烯薄膜,用HI对其还原制备石墨烯薄膜。采用拉曼光谱仪、扫描电子显微镜、原子力显微镜、X射线衍射仪、红外光谱仪、紫外分光光度计和四探针电阻仪进行表征。结果表明:氧化石墨烯结构表面引入了大量的含氧官能团;在氧化石墨烯溶液质量分数为2%时,钢线直径为0.15mm的麦勒棒制备的石墨烯薄膜综合性能指标最佳,该薄膜的透光率(550nm)和方阻分别为80.1%和6.43kΩ/sq,薄膜平均厚度为68.9nm,且厚度偏差能控制在10%左右。该方法操作过程简单,经济成本低,适用于石墨烯透明导电薄膜的批量制备。
Graphene oxide films were prepared by oxidizing graphite to different concentrations of graphene oxide solution,and three different memmel rods were used to prepare graphene films.Characterization was carried out by raman spectroscopy,scanning electron microscopy,atomic force microscopy,X-ray diffractometry,infrared spectrometer,ultraviolet spectrophotometer,and four-probe resistance meter.The results shown that a large number of oxygen-containing functional groups were introduced on the surface of graphene oxide structure.When the mass concentration of graphene oxide solution was 2%,the graphene film prepared by Meile rod with steel wire diameter of 0.15mm had the best comprehensive performance index.The transmittance (550nm) and square resistance of the film were 80.1% and 6.43kΩ/sq,respectively,and the average thickness of the film was 68.9nm,and the thickness deviation can be controlled at about 10%.The method had simple operation process and low economic cost,and was suitable for batch preparation of graphene transparent conductive film.
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基金资助
广西高校中青年教师科研基础能力提升项目(2020KY60019);广西壮族自治区大学生创新创业训练计划项目(201913639073);广西科技大学鹿山学院科研创新团队项目(2018LSTD02)
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