An Exceptionally Water Stable Metal–Organic Framework with Amide‐Functionalized Cages: Selective CO₂/CH₄ Uptake and Removal of Antibiotics and Dyes from Water

Abstract

As the main organic pollutants in wastewater, antibiotics and organic dyes are harmful to the environment and public health, and their removal is important but challenging. In this work, highly porous 3D metal-organic frameworks (MOFs) [M (PDAD)(H O)] (PCN-124-stu; M=Cu, Zn; H PDAD = 5,5'-(pyridine-3,5-dicarbonyl)bis(azanediyl)diisophthalic acid) were synthesized, and PCN-124-stu(Cu) shows excellent chemical and thermal stability. PCN-124-stu(Cu) was used as a host for efficient extraction of various organic dyes, especially the large-molecule dye Coomassie brilliant blue, and fluoroquinolones from water, in comparison with five common MOFs, zeolite 13X, and activated carbon. PCN-124-stu(Cu) exhibits absolute predominance for fluoroquinolone adsorption among these microporous materials because of the H-bonds between fluoroquinolone molecules and the amide groups in the frameworks, except for MIL-100(Cr), which is a mesoporous MOF. Moreover, PCN-124-stu(Cu) could release fluoroquinolones slowly in physiological saline and retained its framework structure after four adsorption/desorption cycles. In addition, PCN-124-stu(Cu) can be used as a platform for selective adsorption of CO /CH

Highly Water-Stable Dye@Ln-MOFs for Sensitive and Selective Detection toward Antibiotics in Water

“…Antibiotics are significant drugs to prevent and treat certain diseases, especially resistance to bacterial infections in aquaculture. − However, widespread application makes increased antibiotic residues appear in grains, animals, and even in drinking water. − Long-term intakes of these contaminated foods could result in severe diseases such as immunity decline, allergic reactions, hereditary genetic defects, and various types of cancers. − At present, various expensive and complicated methods such as chromatographic techniques, optical sensors, electrochemical sensors, and biosensors have been developed to determine antibiotics. − Despite great advantages on sensitivity and selectivity, these technologies necessarily require professional instruments, cumbersome pretreatment, and high operating costs. Therefore, as luminescent sensors, dye@Ln-MOFs can provide an alternative to easily detect antibiotics with high sensitivity.…”

Highly effective selectively removal of carcinogenic dyes and iodine adsorption and release via a metal–organic framework based on multiple helical chains

“…Eventually, the Q m of Cu‐BCPPy to SD III and DB 38 are calculated to be 557 and 164 mg·g −1 , respectively, which is higher than many reported copper‐based MOF materials (Table 1). [ 43,46–57 ] As has been stated above, Cu‐BCPPy provides a probability of selectively removing large‐size carcinogenic dyes.…”

Carbon Nanomaterials for Sorption of 68Ga for Potential Using in Positron Emission Tomography

“…It is known that the model solution of 40 g/L BSA in PBS, which simulates the salt composition, pH and the content of proteins in human blood, is most used to study the stability of the developed RPs [ 29 , 30 , 31 ]. We used this solution to study the stability of the developed 68 Ga@CNMs conjugates at 25 and 37 °C (room and human body temperature; Figure 4 and Figure 5 , respectively).…”