A funky electrochemical sensor for xanthine catching was proposed by growing CoFe-Prussian blue analogs (CoFe-PBA) in situ on ferrocene functionalized Ti₃C₂T_x MXene (Fc-Ti₃C₂T_x), denoted as CoFe-PBA/Fc-Ti₃C₂T_x. In this sensor, introduction of unique thin-layer structure Ti₃C₂T_x MXene as the interlayer spacers to accommodate ferrocene and CoFe-PBA prevented the restacking of MXene and CoFe-PBA, meanwhile gained higher conductivity. The CoFe-PBA/Fc-Ti₃C₂T_x was observed by SEM and TEM to possess abundant heteroatom-functionalized multiple-layers structure, and it was therefore endowed with a faster electron transfer rate and a greater electrochemically active surface area. Furthermore, the sensor was investigated using differential pulse voltammetr (DPV) and superiorelectrochemical sensing performance for xanthine detection was achieved with rather wide linear range (3 × 10⁻⁸ to 1.007 × 10⁻³ M), a remarkably low detection limit (0.002 μM), and superior stability. The recovery rate of real sample analysis was acceptable, demonstrating the viability of using this electrochemical sensor in real applications.

_{通过在二茂铁功能化的 Ti 3} C ₂ T _x MXene (Fc-Ti ₃ C ₂ T _x ) 上原位生长 CoFe-普鲁士蓝类似物 (CoFe-PBA)，提出了一种用于黄嘌呤捕获的时髦电化学传感器，表示为 CoFe- PBA/ Fc-Ti ₃ C ₂ T _x。在该传感器中，引入独特的薄层结构 Ti ₃ C ₂ T _x MXene 作为层间间隔物以容纳二茂铁和 CoFe-PBA，防止了 MXene 和 CoFe-PBA 的重新堆叠，同时获得了更高的导电性。CoFe-PBA/Fc-Ti ₃ C ₂ T _xSEM和TEM观察到具有丰富的杂原子功能化多层结构，因此具有更快的电子转移速率和更大的电化学活性表面积。此外，该传感器使用差分脉冲伏安法 (DPV) 进行了研究，实现了黄嘌呤检测的优异电化学传感性能，具有相当宽的线性范围（3 × 10 ^-8至 1.007 × 10 ^-3 M），非常低的检测限（0.002 μM） ), 以及优越的稳定性。实际样品分析的回收率是可以接受的，证明了在实际应用中使用这种电化学传感器的可行性。