一个表面修改的碳纳米管纤维作为微电极用于pH依赖的电化学检测维生素C
Warda Mansur1, Rizwan Shoukat2, Murat Kaleli3
1Department of Chemistry, The University of Lahore, 1-Km Defence Road, Lahore 54590, Pakistan.
ACS omega
|September 22, 2025
概括
一种使用-氧化物改性碳纳米管纤维 (NiCo-O@CNTF) 的新型依赖pH值的电化学传感器,可以进行敏感的非酶性酸 (AA) 检测. 这种灵活的传感器为可穿戴应用提供快速响应时间.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
背景情况:
- 亚酸 (AA) 是一种具有多种生理作用的重要生物分子.
- 准确和实时监测AA对于诊断和管理各种健康状况至关重要.
- 现有的AA检测方法往往缺乏灵敏度,选择性或可移植性.
研究的目的:
- 开发一种新的pH值依赖的电化学传感器,用于非酶检测 Askorbic 酸 (AA).
- 为了研究AA传感的NiCo-O@CNTF修改电极的性能特征.
- 评估开发的传感器在可穿戴应用中的潜力.
主要方法:
- 使用简单的电化学方法制造氧化改性碳纳米管纤维 (NiCo-O@CNTF) 电极.
- 使用扫描电子显微镜 (SEM),能量分散电子显微镜 (EDX),拉曼和FTIR光谱学进行结构和形态表征.
- 电化学性能通过循环电压测量和不同pH的缓冲溶液中的时测量来评估.
主要成果:
- 通过全面的表征证实了NiCo-O@CNTF电极的成功制造.
- 传感器在不同的pH水平上表现出对AA检测的增强阳极反应.
- 在pH 8.0下达到最佳性能,产生高灵敏度 (62.39 μA cm-2 mM-1),低检测极限 (16 μM) 和快速响应时间 (5 秒).
结论:
- 经过NiCo-O@CNTF修改的电极在敏感和选择性的非酶性AA检测方面表现出色.
- 开发的传感器依赖于pH值,提供可调节的检测功能.
- 尼科-O@CNTF电极的灵活和一次性性质使其成为可穿戴 Askorbic 酸传感应用的有希望的平台.
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