Water-stable zirconium and iron-based metal-organic frameworks (MOFs) as fluoride scavengers in aqueous medium

Outstanding fluoride removal from aqueous solution by a La-based adsorbent

“…It is evident that the values of E from 8 to 16 kJ mol −1 manifest that both ligand exchange and electrostatic attraction are the mainly mechanism. 3,43,45–47 To portray the affinity between the F − and the La(COOH) 3 , the dimensionless constant separation factor ( R L ) values calculated according to the literature 21,37 decline quickly with the increasing of initial F − concentrations in the range of 10–80 mg L −1 and approach to zero, manifesting that the adsorbing system is encouraged at even higher F − concentrations (Fig. S1†).…”

“…Among these water purification techniques, adsorption technology has been indicated to be an eye-catching and economical option owing to its comprehensive benefits of simplicity of design, operational flexibility, inexpensive expenditure, and high efficiency. A great variety of adsorbents like nano sized metal-oxide adsorbents, 11 carbon-based adsorbents, 12 glass fibers, 13 montmorillonite, 2 Mxenes, 14,15 polymers, 16–18 clay, 19,20 and metal–organic frameworks (MOFs) 21–24 have been designed to recover fluoride ions and metal ions in water. However, most traditional defluoridation adsorbents have the limitations of low removal efficiency, are highly pH-dependent over a narrow pH range or have poor selectivity.…”

Performance of Rod-Shaped Ce Metal–Organic Frameworks for Defluoridation

“…Unfortunately, the high cost or limited performance of some of these technologies hinder their practical application. Moreover, adsorption is a widely used technology for fluoride elimination, owing to its outstanding performance, low preparation and operational costs, ease of operation, and lack of secondary pollution [10][11][12]. The main factors determining the performance in F − removal via adsorption are the choice of adsorbent and the operating conditions.…”

A Cell Selective Fluoride-Activated MOF Biomimetic Platform for Prodrug Synthesis and Enhanced Synergistic Cancer Therapy

“…Cancer cell membrane-cloaked nanoparticles, which are emerged as a promising targeted platform for cancer therapy, are preferentially targeting source cells owing to the self-recognition capability. − This biomimetic technology allows the nanomaterials to inherit the abundant receptors and antigenic profile of the origin cancer cells. − Moreover, the biomimetic nanomaterials are capable of mimicking cancer cell behaviors to target the homotypic cells and reduce their elimination by the immune system, prolonging the circulation time, which is facilitated to precise cancer theranostics in vivo . , The advancement of cell membrane coating nanotechnology motivates us to design a biomimetic nanocatalyst for efficient cancer cell-selective bioorthogonal prodrug activation. Typically, MOFs with designable structures, ultrahigh porosity, diverse compositions and multifunctionality have shown great potential for biomedical applications. − In view of multifunctionality of MIL-53-NH 2 (Fe), it not only possesses the high F – loading capacity , and pH-responsive degradation ability , but also displays Fenton catalytic activity, which can be applied for CDT. Thus, biomimetic MIL-53 is expected to be ideal for delivering F – to designated cancerous cells and achieving synergistic anticancer therapy by bioorthogonal prodrug activation and CDT.…”

“…Typically, MOFs with designable structures, ultra-high porosity, diverse compositions and multifunctionality have shown great potential for biomedical applications. 41−45 In view of multifunctionality of MIL-53-NH 2 (Fe), it not only possesses the high F − loading capacity 46,47 and pH-responsive degradation ability 48,49 but also displays Fenton catalytic activity, 50 which can be applied for CDT. Thus, biomimetic Scheme 1.…”