We proposed a new method for regulating the electrochemical signal by using Schottky barrier. The results show that the height of Schottky barrier can be altered by adsorbing charged substance to control the enhancement and attenuation of electrochemical signal. The Schottky interface formed by MoS2 and CQDs (carbon quantum dots) can achieve the selective detection of dopamine and overcome the distraction of ascorbic acid and uric acid with similar redox signal. The combination of Schottky barrier and electrochemical detection enhance the sensitivity and selectivity of electrochemical sensor significantly. It is a new strategy for improving electrochemical detection by introducing Schottky barrier into electrochemical process.

中文翻译：

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用于改进电化学检测的 CQDs/MoS2/Mo 箔的制备

我们提出了一种利用肖特基势垒调节电化学信号的新方法。结果表明，通过吸附带电物质可以改变肖特基势垒的高度，从而控制电化学信号的增强和衰减。MoS2和CQDs（碳量子点）形成的肖特基界面可以实现多巴胺的选择性检测，克服抗坏血酸和尿酸具有相似氧化还原信号的干扰。肖特基势垒和电化学检测的结合显着提高了电化学传感器的灵敏度和选择性。将肖特基势垒引入电化学过程是一种改进电化学检测的新策略。