Abstract A novel electrochemiluminescence (ECL) system that consists of the copper sulphide (CuS) film and K 2 S 2 O 8 was prepared and used for detecting crystal violet in aqueous solutions. The CuS film was a luminescent semiconductor material, which was modified on glassy carbon electrode (GCE) via one-step electrodeposition. To enhance the ECL intensity, K 2 S 2 O 8 was added into the solution. The morphology and composition of the modified electrodes were analyzed with scanning electron microscope, energy-dispersed spectrum, transmission electron microscope, high resolution transmission electron microscopy, X-ray diffraction and Raman spectroscopy. Electrochemical impedance spectroscopy (EIS) was studied for different electrodeposition time. Under the optimal conditions, the ECL intensity of the quenching value (ΔECL) versus the logarithm of the concentration of crystal violet was linear over a concentration range from 5.0 × 10 − 8 to 1.0 × 10 − 5 mol L − 1 ( r = 0.9926) and the limit of detection (LOD) was up to 3.2 × 10 − 9 mol L − 1 .

中文翻译：

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CuS薄膜和K 2 S 2 O 8 的新型电化学发光体系测定结晶紫

摘要 制备了一种由硫化铜（CuS）薄膜和K 2 S 2 O 8 组成的新型电化学发光（ECL）系统，用于检测水溶液中的结晶紫。CuS薄膜是一种发光半导体材料，通过一步电沉积在玻璃碳电极（GCE）上进行改性。为了提高 ECL 强度，将 K 2 S 2 O 8 添加到溶液中。采用扫描电子显微镜、能量色散谱、透射电子显微镜、高分辨透射电子显微镜、X射线衍射和拉曼光谱对修饰电极的形貌和组成进行了分析。研究了不同电沉积时间的电化学阻抗谱 (EIS)。在最优条件下，