Herein, size-controllable molybdenum carbide nanoparticles (Mo₂C NPs) encapsulated by N, P-codoped carbon shells which simultaneously wrapping on the surface of carbon nanotube (Mo₂C@NPC/CNT) is synthesized through a molecular-scale cage-confinement pyrolysis route. Such confinement achieves a good coating and protection of Mo₂C and the effective control over the size of Mo₂C NPs ranging from 2.5 to 10 nm facilitates a rational investigation into their electrochemical sensor behavior at nanometer scales. The optimized structure consisting of Mo₂C nanoparticles with size of ~5 nm showed an outstanding electrochemical response toward dopamine (DA) and acetaminophen (AC) with detection limits (S/N = 3) of 0.008 μM for AC and 0.01 μM for DA.

在此，通过分子级笼式合成了由N，P掺杂的碳壳包裹的尺寸可控的碳化钼纳米颗粒（Mo ₂ C NPs），这些壳同时包裹在碳纳米管（Mo ₂ C @ NPC / CNT）的表面上。封闭热解路线。这种限制实现了对Mo ₂ C的良好涂覆和保护，并且有效控制Mo ₂ C NP的尺寸范围为2.5至10 nm，有助于合理地研究其在纳米级的电化学传感器性能。由Mo ₂组成的优化结构粒径约为5 nm的C纳米颗粒对多巴胺（DA）和对乙酰氨基酚（AC）表现出出色的电化学响应，对于AC的检测极限（S / N = 3）为0.008μM，对于DA为0.01μM。