Qin Guoxu, Cao Duojun, Wan Xinjun, Wang Xinyun, Kong Yaqiong
Engineering Technology Center of Department of Education of Anhui Province, Institute of Novel Functional Materials and Fine Chemicals, College of Chemistry and Materials Engineering, Chaohu University Chaohu 238024 P. R. China
College of Chemistry and Materials Science, Anhui Normal University 189 Jiuhua Southern Road Wuhu 241002 P.R. China.
RSC Adv. 2021 Oct 27;11(55):34842-34848. doi: 10.1039/d1ra05349c. eCollection 2021 Oct 25.
Recently, much effort has been dedicated to ultra-thin two-dimensional metal-organic framework (2D MOF) nanosheets due to their outstanding properties, such as ultra-thin morphology, large specific surface area, abundant modifiable active sites, However, the preparation of high-quality 2D MOF nanosheets in good yields still remains a huge challenge. Herein, we report 2D cadmium-based metal-organic framework (Cd-MOF) nanosheets prepared in a one-pot polyvinylpyrrolidone (PVP)-assisted synthesis method with high yield. The Cd-MOF nanosheets were characterized with good stability and dispersion in aqueous systems, and were highly selective and sensitive to the antibiotic metronidazole (MNZ) with low limit of detection (LOD: 0.10 μM), thus providing a new and promising fluorescent sensor for rapid detection of MNZ in aqueous solution.
近年来，由于超薄二维金属有机框架（2D MOF）纳米片具有超薄形态、大比表面积、丰富的可修饰活性位点等优异性能，人们对其投入了大量研究。然而，以高收率制备高质量的2D MOF纳米片仍然是一个巨大的挑战。在此，我们报道了一种通过一锅法聚乙烯吡咯烷酮（PVP）辅助合成法高产率制备的二维镉基金属有机框架（Cd-MOF）纳米片。Cd-MOF纳米片在水性体系中具有良好的稳定性和分散性，对甲硝唑（MNZ）抗生素具有高选择性和高灵敏度，检测限低（LOD：0.10 μM），从而为水溶液中MNZ的快速检测提供了一种新型且有前景的荧光传感器。
