Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, Guangxi Province, PR China; Province and Ministry Co-sponsored Collaborative Innovation Center of Sugarcane and Sugar Industry, Nanning, 530004, Guangxi Province, PR China.
Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, Guangxi Province, PR China.
Chemosphere. 2023 Nov;341:139981. doi: 10.1016/j.chemosphere.2023.139981. Epub 2023 Aug 28.
A novel, sensitive TiC MXene/CoO/carbon nanofibers (TiC MXene/CoO/CNFs) composite was synthesized via a HF exfoliating TiAlC strategy, followed by doping CoO and TiC MXene into the CNFs via a combination electrospinning and thermal annealing process. TiC MXene/CoO/CNFs composite exhibits higher catalytic effect, conductivity, chemical stability, and electrochemical performance than CoO and TiC MXene in electrochemical impedance, differential pulse stripping voltammetry, chronocoulometry, and cyclic voltammetry tests. This TiC MXene/CoO/CNFs hybrid modified electrode provides fast analysis of 4-aminophenol (4-AP) with ultrahigh sensitivity, enhanced reproducibility and strong anti-interference capability. Furthermore, the level of 4-AP was quantified by this electrode with a wide linear range from 0.5 to 150 μM (R > 0.99) and a low detection limit about 0.018 μM was achieved. Finally, the fabricated electrode was used for fast and sensitive analysis of 4-AP spiked in tap water and blood serum samples. This work presents the new TiC MXene/CoO/CNFs electrode provides a platform for 4-AP monitoring and has the advantages of high selectivity, accuracy, simplicity, and rapid analysis.
一种新型、灵敏的 TiC MXene/CoO/碳纳米纤维（TiC MXene/CoO/CNFs）复合材料通过 HF 剥离 TiAlC 策略合成，然后通过静电纺丝和热退火工艺将 CoO 和 TiC MXene 掺杂到 CNFs 中。TiC MXene/CoO/CNFs 复合材料在电化学阻抗、差分脉冲溶出伏安法、计时库仑法和循环伏安法测试中表现出比 CoO 和 TiC MXene 更高的催化效果、导电性、化学稳定性和电化学性能。这种 TiC MXene/CoO/CNFs 杂化修饰电极提供了对 4-氨基酚（4-AP）的快速分析，具有超高灵敏度、增强的重现性和强大的抗干扰能力。此外，该电极通过线性范围从 0.5 到 150 μM（R > 0.99）和低检测限约 0.018 μM 对 4-AP 进行定量分析。最后，将制备的电极用于快速灵敏地分析自来水中和血清样品中添加的 4-AP。这项工作提出了新的 TiC MXene/CoO/CNFs 电极提供了一个用于 4-AP 监测的平台，具有高选择性、准确性、简单性和快速分析的优点。
