Abstract

Electrical and optical properties of pure and carbon nanotube (CNT)/graphene nanoplate (GNP) mixture-reinforced zinc oxide (ZnO) matrix at different temperatures were investigated. UV–Vis absorption and electrical conductivity measurements were used in order to determine the properties were mentioned above. Samples were divided two main groups based on their matrix: one of them commercially acquired ZnO and the other one was produced via sol–gel method. Both groups have the same four sub-groups according to the percentage of the weight of the reinforcing. SEM images indicated that commercially obtained ZnO matrix has hexagonal structure while ZnO manufactured by sol–gel was mainly in sphere form. Raman spectroscopy and TEM analyses proved that graphene nanoplate structure was produced successfully, and XRD characterization shows that ZnO was produced in a suitable way by sol–gel method. The results indicated that electrical conductivity of the samples which from pure to 0.4% reinforced was decreased with increasing in reinforcing percentage. However, samples with 0.8% CNT/GNP mixture reinforcing showed greatest electrical conductivity. The highest reflection percentages of the samples were obtained from the pure specimens while the lowest ratios were observed in the highest reinforced samples. Activation energy and optical band gap values were calculated according to electrical and optical graphs.

中文翻译：

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碳纳米管/石墨烯纳米板与ZnO基质杂化的影响：纳米复合材料的生产，电学和光学性质

摘要

研究了纯碳纳米管（CNT）/石墨烯纳米板（GNP）混合物增强的氧化锌（ZnO）基质在不同温度下的电学和光学性质。上面提到了使用UV-Vis吸收和电导率测量来确定性能。根据样品的基质将样品分为两大类：一类是商购的ZnO，另一类是通过溶胶-凝胶法生产的。根据增强材料的重量百分比，两组都具有相同的四个子组。SEM图像表明，商业上获得的ZnO基质具有六边形结构，而溶胶凝胶制备的ZnO主要为球形。拉曼光谱和TEM分析证明石墨烯纳米板结构已成功制备，XRD表征表明，通过溶胶-凝胶法以合适的方式生成了ZnO。结果表明，随着增强百分比的增加，样品的电导率从纯增强到0.4％降低。但是，具有0.8％CNT / GNP混合物增强的样品显示出最大的电导率。从纯样品中获得最高的样品反射率，而在最高的增强样品中观察到最低的反射率。根据电和光学图计算活化能和光学带隙值。8％CNT / GNP混合物增强表现出最大的电导率。从纯样品中获得最高的样品反射率，而在最高的增强样品中观察到最低的反射率。根据电和光学图计算活化能和光学带隙值。8％CNT / GNP混合物增强表现出最大的电导率。从纯样品中获得最高的样品反射率，而在最高的增强样品中观察到最低的反射率。根据电和光学图计算活化能和光学带隙值。