Abstract In this paper, a hollow zeolitic imidazolate framework compound was prepared by a facile solvothermal method. The scanning electron microscope, transmission electron microscope, X-ray diffraction, energy disperse spectroscopy, X-ray photoelectron spectroscopy and N2 adsorption-desorption techniques were applied to survey the morphology and structure of the prepared compound, which confirmed that the prepared compound owned a hollow rhombic dodecahedron structure with a core thickness of 450 nm and a 110 nm shell. Based on the prepared compound, a dopamine electrochemical sensor was fabricated. Electrochemical experiments indicated that the dopamine sensor had a wide linear region from 0.25 μM to 0.59 mM, a high sensitivity of 0.32 μA μM−1 cm-2 and a low detection limit of 0.012 μM. Additionally, the dopamine sensor had satisfactory reproducibility and stability, which can be used for the determination of DA in the real sample. The electrochemical results revealed that the hollow zeolitic imidazolate framework compound was an effective material to catalyze the oxidation of dopamine.

中文翻译：

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基于空心沸石咪唑酯骨架的灵敏多巴胺电化学传感器

摘要 本文采用简便的溶剂热法制备了中空沸石咪唑酯骨架化合物。应用扫描电镜、透射电镜、X 射线衍射、能量色散谱、X 射线光电子能谱和 N2 吸附-解吸技术对所制备化合物的形貌和结构进行了研究，证实所制备的化合物具有空心菱形十二面体结构，核厚度为 450 nm，壳层厚度为 110 nm。基于制备的化合物，制备了多巴胺电化学传感器。电化学实验表明，多巴胺传感器具有从0.25 μM到0.59 mM的宽线性区域，0.32 μA μM-1 cm-2的高灵敏度和0.012 μM的低检测限。此外，多巴胺传感器具有令人满意的重现性和稳定性，可用于实际样品中DA的测定。电化学结果表明，中空沸石咪唑酯骨架化合物是催化多巴胺氧化的有效材料。