Nanozyme based on ZIF-8 for the colorimetric detection of sulfonamides in cow milk

Rapid and sensitive detection of alkaline phosphatase and glucose oxidase activity through fluorescence and colorimetric dual-mode analysis based on CuO NPs@ZIF-8 mediated enzyme-cascade reactions

“…2F(a)). The characteristic peaks (2q = 011°, 002°, 112°, 022°, and 222°) of the ZIF-8 sodalite topology are consistent with the previous report 18 (Fig. 2F(b)).…”

Selective fluorescence detection of acetylsalicylic acid, succinic acid and ascorbic acid based on a responsive lanthanide metal fluorescent coordination polymer

“…S3A, † the XRD analysis results show that the characteristic peaks (2q) of the ZIF-8 sodalite topology at 011°, 002°, 112°, 022°, and 222°are in accordance with those of a previous report. 17 When ZIF-8, ASA, 2-MIm, and Dy(III) (ZIF-8-RS) were mixed and incubated at 40 °C for several minutes (3 min, 3 min), the characteristic peaks of ZIF-8 still existed, although their intensity had slightly decreased. The intensity of these characteristic peaks had obvious changes when SA was added to the reaction system, which may be due to the covering of the periphery and surface of ZIF-8 by the generated LCPs, resulting in the changes of the crystal morphology.…”

Nanoporous ZIF-8 Microparticles as Acetylcholinesterase and Alkaline Phosphatase Mimics for the Selective and Sensitive Detection of Ascorbic Acid Oxidase and Copper Ions

“…The synthesis of ZIF-8 was carried out in line with the previously reported method [ 1 ]. Firstly, 4 mL of C 4 H 6 O 4 Zn∙2H 2 O (0.4 M) and 40 mL of 2-methylimidazole (0.8 M) were added to a 100 mL beaker, and then placed in an oven and reacted at 30 °C for 2 h. The prepared material was purified through centrifugation for 5 min at 2259× g and rinsed with ultra-pure water twice.…”

“…Zeolitic-imidazolate framework-8 (ZIF-8), which is constructed by tetrahedral coordination of zinc cations (Zn 2+ ) to the nitrogen in 2-methylimidazole linkers, is one of the representative members of metal-organic frameworks (MOFs). ZIF-8 has a uniform porous structure, high surface area and porosity, and good chemical stability [ 1 ]. Compared with other MOFs, the preparation of ZIF-8 has the characteristics of being a rapid, simple, and green synthesis process that utilizes a harmless solvent under mild conditions [ 2 , 3 ].…”