Motivated by the outstanding properties and unique structure of graphene oxide (GO), the polymer nanocomposites of ethyl cellulose (EC) as a polymer matrix and the GO as a nano‐filler have been prepared with the different GO wt% concentrations using simple solution blending technique followed by the ultrasonication treatment and characterized by using various advanced techniques. The X‐ray diffraction (XRD) was utilized to determine the preliminary phase determination and for the structural analysis. The optical band gaps were determined with the help of UV‐Vis‐NIR spectrophotometer and were verified by the PL spectra using Spectro‐Fluorescence. According to experimental results, the optical bandgap of the nanocomposite was found to reduce with increasing GO content. The field emission scanning electron microscopy (FESEM) was used to study the surface morphology and to identify the presence of GO in the nanocomposites. The Fourier transform infrared (FTIR) study has been carried out to recognize the presence of functional groups and their vibrational mechanisms. Micro‐Raman imaging technique has been used to determine the Raman bands present in the nanocomposites. The optical band gap of the nanocomposites reflects the semiconducting nature, which might be used in optoelectronic devices and sensor applications.

中文翻译：

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乙基纤维素/氧化石墨烯纳米复合材料的结构，光学和表面形态研究

受氧化石墨烯（GO）的卓越性能和独特结构的影响，使用简单的溶液共混方法制备了具有不同GO wt％浓度的乙基纤维素（EC）作为聚合物基质和GO作为纳米填料的聚合物纳米复合材料技术，然后进行超声处理，并使用各种先进技术进行表征。X射线衍射（XRD）用于确定初步相的确定和结构分析。借助UV-Vis-NIR分光光度计确定了光学带隙，并使用分光荧光法通过PL光谱对其进行了验证。根据实验结果，发现纳米复合材料的光学带隙随GO含量的增加而减小。场发射扫描电子显微镜（FESEM）用于研究表面形态并鉴定GO在纳米复合材料中的存在。已经进行了傅立叶变换红外（FTIR）研究来识别官能团及其振动机理的存在。显微拉曼成像技术已被用于确定纳米复合材料中存在的拉曼带。纳米复合材料的光学带隙反映了半导体性质，可用于光电设备和传感器应用中。显微拉曼成像技术已被用于确定纳米复合材料中存在的拉曼带。纳米复合材料的光学带隙反映了半导体性质，可用于光电设备和传感器应用中。显微拉曼成像技术已被用于确定纳米复合材料中存在的拉曼带。纳米复合材料的光学带隙反映了半导体性质，可用于光电设备和传感器应用中。