In this study, highly photoluminescent and photocatalytic Fe₂O₃@carbon quantum dots/graphene oxide nanostructures were synthesized using ball milling‐assisted hydrothermal synthesis with hard pistachio shells. Different analyses, such as X‐ray diffraction, energy dispersive X‐ray spectroscopy, and Fourier transform infrared spectroscopy were used to study the product structure. Scanning electron microscopy and transmission electron microscopy images were used to study product size and morphology. Optical properties of the as‐synthesized nanomaterials were investigated using ultraviolet–visible light and photoluminescence analyses. To increase photoluminescence intensity, ethylene diamine tetraacetic acid, polyethylene glycol, polyvinylpyrrolidone, and acetylacetonate anions were used to modify the product surface. Thermal stability of the product was studied using thermal gravimetric analysis. Finally, photocatalytic activity and surface adsorption of the product were investigated; the produce was found to be highly photoluminescent with high photocatalytic and surface activities.

中文翻译：

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开心果硬壳通过水热辅助球磨法原位绿色合成高荧光Fe2 O3 @ C​​QD /氧化石墨烯。

在这项研究中，高度光致发光和光催化的Fe ₂ O ₃使用具有硬开心果壳的球磨辅助水热合成法合成了@碳量子点/氧化石墨烯纳米结构。X射线衍射，能量色散X射线光谱和傅里叶变换红外光谱等不同分析方法都用于研究产品结构。扫描电子显微镜和透射电子显微镜图像用于研究产品尺寸和形态。使用紫外可见光和光致发光分析研究了合成纳米材料的光学特性。为了增加光致发光强度，使用乙二胺四乙酸，聚乙二醇，聚乙烯吡咯烷酮和乙酰丙酮酸根阴离子来修饰产品表面。使用热重分析法研究了产品的热稳定性。最后，研究了产物的光催化活性和表面吸附。发现该产品具有高光催化性和高光催化活性和表面活性。