Design of nitrobenzene vapor sensor based on PCN-224

It is vital to develop a quick and reliable approach for nitrobenzene in gas phase detection. In this work, the quartz crystal microbalance (QCM) platform was used to take advantage of the porphyrin-based metal-organic frameworks (MOFs) of PCN-224 as a novel sensing material for the sensitive and selective detection of nitrobenzene vapor. Besides, a quick response time of only 16 s was achieved. Meanwhile, the frequency shift in gas sensor could be proportionally quenched in correlation with the concentration of nitrobenzene vapor. Additionally, this PCN-224-based sensor demonstrated great stability to nitrobenzene vapor. This foreshadowed the huge potential of nitrobenzene detection in gas phase for practical applications in public security.

Automated summary

In this study, the quartz crystal microbalance (QCM) platform was used to detect nitrobenzene vapor. The PCN-224-based sensor showed sensitive and selective detection, with a quick response time of 16 s. The frequency shift in the gas sensor was proportional to the concentration of nitrobenzene vapor. This sensor also demonstrated excellent stability, indicating its potential for practical applications in public security.