A comprehensive research experiment was designed for the preparation of ascorbic acid modified MXene Ti₃C₂ (MXene/VC) and its application in electrochemical detection of p-nitrophenol. Firstly, the Al species of Ti₃AlC₂ was removed by acid-etching to synthesize MXene-Ti₃C₂. Secondly, the MXene/VC material was fabricated by modifying MXene-Ti₃C₂ with VC. Subsequently, the MXene/VC material was characterized by infrared spectroscopy, scanning electron microscopy and X-ray photoelectron spectroscopy. Finally, the differential pulse voltammetry (DPV) method was employed to systematically analyze the electrochemical detection of p-nitrophenol. The whole experimental process included multiple steps, such as literature consult, material preparation, microscopic characterization, electrochemical sensing performance testing and experimental report writing, which is conducive to the improvement of students' comprehensive quality.