Design of nitrobenzene vapor sensor based on PCN-224

Abstract

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.

Intelligent Identification of Cerebrospinal Fluid for the Diagnosis of Parkinson’s Disease

“…Similarly, the formation of metal center Cu 2+ in PC can also be confirmed by Cu 2p 1/2 (954.3 eV) and Cu 2p 3/2 (934.3 eV) 38 in the high-resolution Cu 2p spectrum of PC (Figure 2e). For Zr 3d, two characteristic peaks are attributed to Zr 3d 3/2 (184.7 eV) and Zr 3d 5/2 (182.2 eV), 39 , confirming the presence of Zr 4+ ions (Figure 2f). The state of the particles in solution was measured by DLS.…”