Green synthesis of MOF-808 with modulation of particle sizes and defects for efficient phosphate sequestration

Numerical Recognition System and Ultrasensitive Fluorescence Sensing Platform for Al3+ and UO22+ Based on Ln (III)-Functionalized MOF-808 via Thiodiglycolic Acid Intermediates

“…What’s more, MOF-808-TDA and Eu@MOF-808-TDA also remain good morphologies (Figures S3 and S4). The average size of nanoparticles is estimated to be around 200 nm, which is consistent with previous reports . Additionally, C, O, Zr, S, and Tb elements are clearly observed on the probe Tb@MOF-808-TDA by SEM-EDS analysis (Figure g), confirming that the green-emission center Tb 3+ is introduced into the framework of MOF-808 .…”

“…The crystallization behavior of MOF-808 and its derivates is explored by PXRD patterns. As seen from Figure b, the peaks of as-synthesized MOF-808 are in good agreement with that of simulated MOF-808 , and three main diffraction peaks at 2θ of 4.35, 8.35 and 8.75° correspond to the typical reflections of (111), (311) and (222), respectively. , These results indicate that MOF-808 is successfully prepared by solvothermal method. After PSM with TDA and Eu 3+ (or Tb 3+ ), the Bragg diffraction position of MOF-808 framework is well-maintained but there is a slight change for peak intensity.…”

“…The average size of nanoparticles is estimated to be around 200 nm, which is consistent with previous reports. 54 Additionally, C, O, Zr, S, and Tb elements are clearly observed on the probe Tb@MOF-808-TDA by SEM-EDS analysis (Figure 2g), confirming that the green-emission center Tb 3+ is introduced into the framework of MOF-808. Similarly, the same phenomenon and conclusion can be obtained on Eu@MOF-808-TDA (Figure S4).…”

Defect-engineered metal–organic frameworks (MOF-808) towards the improved adsorptive removal of organic dyes and chromium (vi) species from water

“…In fact, MOF-808, a representative 6-connected Zr-MOF based on a trimesate ligand (1,3,5-benzenetricarboxylate), could be considered a more promising candidate than the Zr-MOFs built with 12-connected zirconium clusters due to the inherent active centers generated by the modulated synthesis approach. [25][26][27] To the best of our knowledge, although there have been several studies on MOF-808 with deliberated introduced defects, most of them aimed for water adsorption, phosphate sequestration, and catalytic applications, 12,25,[27][28][29][30] while the employment of defective MOF-808 for the removal of contaminants in aqueous solution is still rare in the literature. 31,32 Recently, original MOF-808 turned out to be an effective adsorbent to capture organic dyes and oxometallate compounds, namely sunset yellow, quinoline yellow, and the Cr (VI) anion, with impressive performances as compared to traditional materials, such as activated carbon or mesoporous silica materials.…”

Acid-directed synthesis of three Cd-based metal–organic frameworks with luminescence and catalytic CO2transformation properties

“…In addition, many factors can affect the synthesis of MOFs, which further increases its difficulty. [37][38][39][40][41][42][43][44] Among the synthesis factors, the addition of an acidity regulator has been proven to be of great importance, since the dosage and the kind of the acidity regulator can not only adjust the pH of the synthesis system, but also influence the final structure and properties of MOFs due to the coordination difference of the added acid. Therefore, control of the acidity regulator is very important for the construction of MOFs with different structures and properties.…”