Cruz Lozada John A, Rosario Ricardo A, Flores Soraya Y, Kisslinger Kim, Fonseca Luis F, Piñero Cruz Dalice M
Faculty of Natural Sciences, University of Puerto Rico, Río Piedras Campus, San Juan 00931, Puerto Rico.
Molecular Science Research Center, San Juan 00926-2614, Puerto Rico.
ACS Omega. 2025 Jan 16;10(3):2809-2818. doi: 10.1021/acsomega.4c08662. eCollection 2025 Jan 28.
Monitoring ultralow nitrogen dioxide (NO) concentrations is crucial for air quality management and public health. However, the existing NO gas sensors have several defects, like high cost and power consumption, and exhibit poor selectivity. This study addresses these challenges by presenting a novel hexadecafluorinated iron phthalocyanine-reduced graphene oxide (FePcF-rGO) covalent hybrid sensor for NO detection. This innovative approach, which overcomes the limitations of fabrication cost, energy efficiency, and gas selectivity, is a significant step forward in gas sensor technology. The sensor demonstrates exceptional sensitivity toward ultralow NO concentrations (15.14% response for 100 ppb) with a rapid 60 s UV light-induced recovery. Additionally, the sensor exhibits high selectivity for NO, achieving a limit of detection (LOD) of 8.59 ppb. This approach paves the way for developing cost-effective, energy-efficient, and miniature NO monitoring devices for improved environmental monitoring and enhanced safety in workplaces where NO exposure is a concern.
监测超低浓度的二氧化氮（NO）对于空气质量管理和公众健康至关重要。然而，现有的NO气体传感器存在一些缺陷，如成本高、功耗大，且选择性差。本研究通过提出一种用于检测NO的新型十六氟酞菁铁-还原氧化石墨烯（FePcF-rGO）共价混合传感器来应对这些挑战。这种创新方法克服了制造成本、能源效率和气体选择性方面的限制，是气体传感器技术向前迈出的重要一步。该传感器对超低浓度的NO表现出卓越的灵敏度（对100 ppb的响应为15.14%），在60秒的紫外光诱导下能快速恢复。此外，该传感器对NO具有高选择性，检测限（LOD）达到8.59 ppb。这种方法为开发经济高效、节能且微型的NO监测设备铺平了道路，可用于改善环境监测，并提高存在NO暴露风险的工作场所的安全性。
