“…[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. 26 Although this finding provided a comprehensive overview regarding the impact of the MOF-808 morphology, including particle size and crystallinity on its anion trapping ability, the effect of defective sites, which could also serve as effective active centers, was not mentioned.…”