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Portable Microplastics Electrochemical Sensor: Combining Experiment and Density Functional Theory
Summary
Researchers developed a portable electrochemical sensor for on-site microplastic detection in water, integrating density functional theory (DFT) calculations to elucidate electron transfer mechanisms at the sensor interface. The device, controlled via smartphone, demonstrated a sensitive electrochemical response to microplastics in environmental water samples, offering a new paradigm for in-situ pollution monitoring.
The challenge of rapidly monitoring in-situ of microplastic pollution in environmental necessitates moving beyond conventional detection methods. In this study, a novel portable electrochemical sensing approach, guided by density functional theory (DFT) calculations, was developed. The platform integrates a three-electrode system with a portable electrochemical workstation, enabling on-site analysis of water samples from the environmental via a smartphone-controlled interface for data acquisition and processing. DFT computations were employed to gain a deep insight into the interaction mechanisms between microplastics and the sensor interface, elucidating the electron transfer processes and key interactive forces. The experimental results demonstrated a significant and sensitive electrochemical response of the portable sensor against microplastics. This work successfully bridges theoretical modeling with experimental validation and provide a novel paradigm for the development of high-performance detection technologies for on-site microplastic analysis.