Synthesis of DtBuCH18C6-coated magnetic metal–organic framework Fe3O4@UiO-66-NH2 for strontium adsorption

High strontium adsorption performance of layered zirconium phosphate intercalated with a crown ether

“…When the equilibrium concentration of Sr 2+ was at 380 mg L −1 , the maximum adsorption equilibrium capacity of ZrP/18C6 for Sr 2+ was obtained to be 195.74 mg g −1 , which was 4.5 times higher than that of α-ZrP at 43.03 mg g −1 . It can be seen that ZrP/18C6 attains a higher adsorption capacity than the general zirconium phosphate-based materials 12 and crown ether-based materials, 14 indicating a better adsorption potential. This suggests that intercalation of 18-crown-ether-6 into zirconium phosphate leads to the formation of many binding sites for Sr 2+ .…”

“…3(b) shows that the C 1s peak can be deconvoluted to three peaks at 284.80 eV, 286.30 eV, and 288.73 eV, respectively, indicating carbon exists in three different states of C–C/C–H, C–OH, and C–O–C, respectively. 14 Fig. 3(c) presents deconvolution of the O 1s peak to three types of peaks at 531.11 eV, 532.55 eV and 533.43 eV.…”

“…The main methods studied include chemical precipitation, 5 solvent extraction, 6,7 membrane treatment, 8,9 biological methods, 10,11 and adsorption methods. [12][13][14] Among these methods, the adsorption method has advantages over other methods in treatment efficiency, chemical reagent dosage, and separation cost. Therefore, in the last decades, a lot of adsorbents have been developed.…”

Adsorption‐Induced In‐Situ Construction of TiO2 Hollow Sphere/UiO‐66‐NH2 Heterostructures with Boosted Photocatalytic Activity toward Cr(VI) Reduction

“…[22] And the absorption peak located at 1260 cm À 1 is ascribed to the stretching vibration of CÀ N. [29] The absorption peaks appeared in 768 cm À 1 and 665 cm À 1 are the absorption peak of ZrÀ O. [30] And the feature peak at approximately 3300 cm À 1 is corresponding to the absorption peak of NÀ H. [29] In nitrogen adsorption and desorption isotherms (Figure 2f), TiO 2 hollow spheres display a type IV isotherm shape, which rises abruptly in the high-pressure region with a hysteresis loop of type H4. [31] With the growth of UiO-66-NH 2 particles, the adsorption uptake of composites in the low-pressure region increased rapidly with a typical isotherm shape of type I, which is similar to that of pure UiO-66-NH 2 crystals.…”

Selective extraction of apixaban from plasma by dispersive solid‐phase microextraction using magnetic metal organic framework combined with molecularly imprinted polymer nanocomposite

“…Then, it was transferred into an oil bath thermostated at a temperature of 80 • C, 12 mL of ammonia solution (25%, w/w) was quickly added to the solution, and stirred for 2 h. Finally, the Fe 3 O 4 nanoparticles were collected by an external magnet. They were washed with 10 mL water:ethanol mixture (1:1, v/v) and dried in an oven at 80 • C for 6 h. The synthesized Fe 3 O 4 nanoparticles were functionalized using MAA according to literature [34]. In the following, the magnetic MOF was synthesized using the previously reported study with some modifications [20].…”