This work employed a polystyrene sphere as a template to synthesize a hollow nanocomposite with gold‐embedded zeolitic imidazolate framework‐67 (H‐Au@ZIF‐67). The morphological and structural characteristics of the prepared composite were investigated by using scanning electron microscopy, transmission electron microscopy, X‐ray diffraction and energy‐disperse spectroscopy, indicating that H‐Au@ZIF‐67 with a sunflower‐shaped cross section was successfully prepared. The synthesized H‐Au@ZIF‐67 was used to construct a dopamine electrochemical sensor, which showed good linearity scope of 0.25–438.75 μM with a high sensitivity of 332.1 μA mM⁻¹ cm⁻² and low detection limit of 0.04 μM. These results showed that the H‐Au@ZIF‐67 can be a good electrode modification material for dopamine sensing.

中文翻译：

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含金的沸石咪唑盐骨架67制备空心纳米复合材料，用于电化学测定多巴胺

这项工作以聚苯乙烯球为模板，用嵌入金的沸石咪唑酸盐骨架-67（H-Au @ ZIF-67）合成空心纳米复合材料。通过扫描电子显微镜，透射电子显微镜，X射线衍射和能量分散光谱研究了所制备复合材料的形貌和结构特征，表明成功制备了向日葵形截面的H-Au @ ZIF-67。 。合成的H-Au @ ZIF-67用于构建多巴胺电化学传感器，其线性范围显示为0.25-438.75μM，灵敏度高，为332.1μAmM ^-1  cm ^-2检测下限为0.04μM。这些结果表明，H-Au @ ZIF-67可以作为多巴胺感测的良好电极修饰材料。