This research introduces a novel approach for swiftly enhancing the electrochemical sensing capabilities of commercial screen-printed carbon electrodes through a rapid acid microwave-assisted functionalization of carbon nanofibers (f-CNF). A comparative analysis with the conventional refluxed system functionalization method (f-CNF) was conducted to assess the electrochemical performance of the newly developed f-CNF. The voltametric study showed that f-CNF- significantly enhanced the electron transfer rate when testing common phenolic compounds such as hydroquinone, paracetamol, and caffeic acid. Moreover, the anodic oxidation potential for the majority of irreversible analytes was negatively shifted, indicating the high electro-catalytic activity of f-CNF- gained after this treatment, making it analytically useful for the electro-oxidation of some molecules that require high overpotential, mainly for purine bases and nitrite. Additionally, the developed f-CNF- exhibited remarkable resistance to fouling phenomena when exposed to bisphenol A and tryptophan, underscoring its potential for real-world applications. To sum up, this study highlights the potential of rapid microwave treatment in producing f-CNF- as a promising electrochemical nanomaterial, resulting in substantial improvements in electro-analytical capabilities compared to conventional methodologies.

中文翻译：

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碳纳米纤维的快速微波辅助功能化：一种有前途的电活性分析物电化学传感平台

这项研究引入了一种新方法，通过碳纳米纤维（f-CNF）的快速酸性微波辅助功能化，快速增强商用丝网印刷碳电极的电化学传感能力。与传统回流系统功能化方法（f-CNF）进行比较分析，以评估新开发的 f-CNF 的电化学性能。伏安研究表明，在测试常见酚类化合物（如对苯二酚、扑热息痛和咖啡酸）时，f-CNF- 显着提高了电子转移速率。此外，大多数不可逆分析物的阳极氧化电位发生负移，表明经过这种处理后，f-CNF-获得了高电催化活性，使其在分析上可用于一些需要高过电位的分子的电氧化，主要为嘌呤碱和亚硝酸盐。此外，所开发的 f-CNF- 在暴露于双酚 A 和色氨酸时表现出显着的抗结垢现象，强调了其在实际应用中的潜力。综上所述，这项研究强调了快速微波处理在生产 f-CNF- 作为一种有前途的电化学纳米材料方面的潜力，与传统方法相比，电分析能力得到了显着提高。