A CO2 optical sensor based on self-assembled metal-organic framework nanoparticles
A CO2 optical sensor based on self-assembled metal-organic framework nanoparticles
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DOI：
10.1039/c8ta02767f
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发表时间：
2018-07-21
影响因子：
11.9
通讯作者：
Lechuga, Laura M.
中科院分区：
文献类型：
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作者：
Chocarro-Ruiz, Blanca;Perez-Carvajal, Javier;Lechuga, Laura M.
传感和监测CO2水平的设备的开发对于许多领域至关重要，例如食品包装和室内人体安全。本文报道了一种利用金属有机骨架（MOF）与双模光波导集成的光学CO2传感器。该传感器通过在波导上自组装沸石咪唑酯骨架-8（ZIF-8）纳米颗粒（尺寸：32 +/-5 nm）的透明膜来构建。基于nanoZIF-8的传感器表现出宽线性响应，在室温下的检测限为3130 ppm，在278 K下的检测限为774 ppm。此外，它具有耐用性，选择性，快速和可重复使用，并且可以在潮湿条件下储存而不会损失性能。
The development of devices for sensing and monitoring CO2 levels is crucial for many fields such as food packaging and for human safety indoors. Herein the fabrication of an optical CO2 sensor by integration of a metal-organic framework (MOF) onto bimodal optical waveguides is reported. This sensor is constructed via self-assembly of a transparent film of zeolitic imidazolate framework-8 (ZIF-8) nanoparticles (size: 32 +/- 5 nm) on the waveguides. The nanoZIF-8-based sensor exhibits a broad linear response, with limits of detection of 3130 ppm at room temperature and 774 ppm at 278 K. Furthermore, it is robust, selective, fast and reusable, and can be stored under humid conditions with no loss in performance.