Abstract：
Visualization of the electrochemical reaction is essential for comprehensively understanding the electrochemical reaction mechanism and precisely characterizing dynamic electrochemical processes. Herein, we propose a simple device that combines light-addressable potentiometric sensor (LAPS) imaging and microelectrodes to serve as a general electroanalysis platform for the label-free sensing and imaging of electrochemical reactions. In this device, two microelectrodes are assembled on the LAPS chip. Electrochemical reactions occurring on the microelectrodes can be qualitatively and quantitatively observed and visualized using a LAPS chip that is sensitive to the reaction products. Validations were performed to monitor the effect of water electrolysis and potassium ferrocyanide oxidation surrounding the microelectrodes, respectively. We believe that this study will provide an excellent platform for the visualization and monitoring of electrochemical reactions and broaden the application scope of LAPS imaging to a general electroanalysis tool that is widely applicable in several fields.
摘要：
电化学反应的可视化对于全面理解电化学反应机理和精确表征动态电化学过程至关重要。在这里，我们提出了一个简单的装置，结合光寻址电位传感器（LAPS）成像和微电极作为一个通用的电分析平台的无标记传感和成像的电化学反应。在这个装置中,两个微电极组装在LAPS芯片上。可以使用对反应产物敏感的LAPS芯片对微电极上发生的电化学反应进行定性和定量观察和可视化。进行验证以监测微电极周围的水电解和亚铁氰化钾氧化的影响，分别。我们相信，这项研究将为电化学反应的可视化和监测提供一个极好的平台，并将LAPS成像的应用范围拓宽到广泛适用于多个领域的通用电分析工具。
