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使用一组碳纳米管化学电阻器持续监测自由水平和pH值

Md Ali Akbar¹, Mehraneh Tavakkoli Gilavan², Ponnambalam Ravi Selvaganapathy^2,3

¹Department of Chemistry and Chemical Biology, McMaster University, 1280 Main St. W., Hamilton, Ontario L8S 4M1, Canada.

|July 21, 2025

概括

研究人员开发了一种使用单壁碳纳米管 (SWCNTs) 的新传感器阵列,用于持续监测饮用水中的自由 (FC). 这项技术可以在各种pH水平上精确检测FC水平,而不需要经常校准或试剂.

科学领域:

材料科学材料科学材料科学
分析化学分析化学
环境科学环境科学

背景情况:

自由 (FC) 对于水的消毒至关重要,但它的有效性取决于度和pH值.
目前对FC的监测方法需要经常校准或使用化学试剂,这在实践中带来了挑战.
持续,可靠的FC监测对于确保安全的饮用水质量至关重要.

研究的目的:

开发和演示一系列单壁碳纳米管 (SWCNT) 化学电阻器,用于连续监测自由.
评估传感器阵列在一系列FC度和pH水平的性能.
改进传感器设计以适用于大规模制造,并采用电子重置功能进行持续监控.

主要方法:

制造SWCNT化学电阻器,使用甲和甲进行功能化.
测试传感器阵列对不同pH值 (6.59.5) 的不同自由度 (0.032.1 mg/L) 的反应.
评估了一种改进的传感器设计,用于大规模生产,测试了更广泛的FC范围 (0.01510毫克/升),检测极限 (LOD) 为0.001毫克/升,并包含电子重置功能.

主要成果:

该SWCNT传感器阵列成功地在测试范围和pH值范围内区分了FC度.
改进的传感器设计促进了大规模制造,并证明了0.001 mg/L的低LOD.
通过在模拟的自来水中重复测量,传感器表现出耐用性,并包含了用于持续监控的电子重置.

结论:

基于电气传感器的自由的持续监测是可行的,使用功能化的SWCNT化学电阻.
开发的传感器阵列为确保饮用水安全的传统方法提供了一个有希望的替代方案.
改进的设计和内置的功能为在水处理中实用,大规模应用铺平了道路.

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