College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China.
College of Energy Storage Technology, Shandong University of Science and Technology, Qingdao, Shandong 266590, China.
Anal Methods. 2024 Oct 24;16(41):6974-6987. doi: 10.1039/d4ay00980k.
A free-standing electrode based on carbon cloth-supported Fe-doped polydopamine-derived carbon (Fe/PDA-C/CC) was developed for the simultaneous detection of dopamine (DA) and uric acid (UA). First, dopamine was self-polymerized on the surface of the carbon cloth to obtain polydopamine coatings. Subsequently, Fe was introduced through the formation of a coordinate bond with the hydroxyl functional group in the polydopamine layer. After calcination, a flexible and free-standing electrode was obtained. The sensing performance and mechanism of the Fe/PDA-C/CC sensor was investigated and is discussed in detail herein. Experimental results demonstrated that Fe/PDA-C/CC could simultaneously detect DA and UA with a wide detection range of 0.5-300 μM and 0.5-400 μM with low detection limits of 0.041 μM and 0.012 μM, respectively. Meanwhile, Fe/PDA-C/CC possessed excellent anti-interference performance, repeatability, stability, and accuracy in real samples. Overall, this study provides a facile and effective approach for simultaneous detection of UA and DA.
一种基于碳纤维布支撑的 Fe 掺杂聚多巴胺衍生碳（Fe/PDA-C/CC）的独立电极被开发出来，用于同时检测多巴胺（DA）和尿酸（UA）。首先，多巴胺在碳纤维布表面自聚合形成聚多巴胺涂层。随后，通过与聚多巴胺层中的羟基官能团形成配位键引入 Fe。经过煅烧，得到了一种柔性且独立的电极。本文详细探讨了 Fe/PDA-C/CC 传感器的传感性能和机理。实验结果表明，Fe/PDA-C/CC 可以同时检测 DA 和 UA，检测范围分别为 0.5-300 μM 和 0.5-400 μM，检测限分别为 0.041 μM 和 0.012 μM。同时，Fe/PDA-C/CC 在实际样品中具有优异的抗干扰性能、重复性、稳定性和准确性。总的来说，本研究为同时检测 UA 和 DA 提供了一种简便有效的方法。
