Due to rapid urbanization worldwide, monitoring the concentration of nitrogen dioxide (NO), which causes cardiovascular and respiratory diseases, has attracted considerable attention. Developing real-time sensors to detect parts-per-billion (ppb)-level NO remains challenging due to limited sensitivity, response, and recovery characteristics. Herein, we report a hybrid structure of CuHHTP, 2D semiconducting metal-organic frameworks (MOFs), and laser-induced graphene (LIG) for high-performance NO sensing. The unique hierarchical pore architecture of LIG@CuHHTP promotes mass transport of gas molecules and takes full advantage of the large surface area and porosity of MOFs, enabling highly rapid and sensitive responses to NO. Consequently, LIG@CuHHTP shows one of the fastest responses and lowest limit of detection at room temperature compared with state-of-the-art NO sensors. Additionally, by employing LIG as a growth platform, flexibility and patterning strategies are achieved, which are the main challenges for MOF-based electronic devices. These results provide key insight into applying MOFtronics as high-performance healthcare devices.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10229625 | PMC |
| http://dx.doi.org/10.1038/s41467-023-38918-3 | DOI Listing |
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