AgII doped MIL-101 and its adsorption of iodine with high speed in solution

Mao, Ping; Qi, Bingbing; Liu, Ying; Zhao, Lei; Yan, Jiao; Zhang, Yi; Jiang, Zheng; Li, Qiang; Wang, Jinfeng; Chen, Shouwen; Yang, Yi

doi:10.1016/j.jssc.2016.02.030

Cited by 72 publications

(21 citation statements)

References 61 publications

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“…These values are lower than the maximum measured in equilibrium experiments, about 132 mg/g for Ag 2 O@NZU and 94 mg/g for Ag 0 @NZU. Discrepancies between expected (based on Ag content) and observed (removal experiments) on iodide solid phase loading are not uncommon and not always explained [33,[48][49][50][51]. As discussed in Section 3.3, the excess iodide removed can be explained by the formation of AgI colloids and Ag-I complexes in the solution and probably on the surface of the materials.…”

Section: The Adsorption Kinetics and Equilibriummentioning

confidence: 95%

Surface Interactions and Mechanisms Study on the Removal of Iodide from Water by Use of Natural Zeolite-Based Silver Nanocomposites

et al. 2020

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In this work a natural zeolite was modified with silver following two different methods to derive Ag2O and Ag0 nanocomposites. The materials were fully characterized and the results showed that both materials were decorated with nanoparticles of size of 5–25 nm. The natural and modified zeolites were used for the removal of iodide from aqueous solutions of initial concentration of 30–1400 ppm. Natural zeolite showed no affinity for iodide while silver forms were very efficient reaching a capacity of up to 132 mg/g. Post-adsorption characterizations showed that AgI was formed on the surface of the modified zeolites and the amount of iodide removed was higher than expected based on the silver content. A combination of experimental data and characterizations indicate that the excess iodide is most probably related to negatively charged AgI colloids and Ag-I complexes forming in the solution as well as on the surface of the modified zeolites.

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Section: The Adsorption Kinetics and Equilibriummentioning

confidence: 95%

Surface Interactions and Mechanisms Study on the Removal of Iodide from Water by Use of Natural Zeolite-Based Silver Nanocomposites

et al. 2020

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“…For the adsorption method, the adsorbent is a critically important factor affecting the removal efficiency. Many materials, such as activated carbon [17], natural minerals [5,18], metal compounds [19,20], and Ag 2 O composites [21], have been used as adsorbents. Remarkably, Ag 2 O composites featuring Ag 2 O nanoparticles loaded on the surface of different supports are very attractive because of the strong affinity between iodide and silver.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Halloysite/Ag2O Nanomaterials and Their Performance for Iodide Adsorption

Dong

et al. 2022

Minerals

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Halloysite/Ag2O (Hal/Ag2O) nanomaterials were prepared by growing Ag2O nanoparticles on the surface of nanotubular halloysite using silver nitrate solution under alkaline conditions. The nanomaterials were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and N2 adsorption. Good dispersion of Ag2O nanoparticles with average sizes of 6.07 ± 2.5 nm and 8.04 ± 3.8 nm was achieved in the nanomaterials when using different concentrations of alkali. The nanomaterial with 6.36% Ag2O (Hal/Ag2O-2) exhibited rapid adsorption to iodide (I−); adsorption equilibrium can be reached within 100 min. The adsorption capacity of I− on Hal/Ag2O-2 is 57.5 mg/g, which is more than 143 times higher than that of halloysite. The nanomaterial also showed a better adsorption capacity per unit mass of Ag2O due to the better dispersion and less coaggregation of Ag2O in the nanomaterial than in the pure Ag2O nanoparticles. Importantly, Hal/Ag2O-2 exhibited high selectivity for I−, and its I− removal efficiency was hardly affected by the coexistence of Cl−, Br−, or SO42−, as well as the initial pH of the solution. With an excellent adsorption performance, the prepared Hal/Ag2O nanomaterial could be a new and efficient adsorbent capable of the adsorption of radioactive I− from aqueous solution.

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“…For example, it was possible to carry out functionalization of the organic part and/or modification of the metal center in order to tune interactions occurring between the adsorbate and the solid surface, thereby modelling the adsorption power of the adsorbent [ 26 , 27 , 28 , 29 , 30 , 31 , 32 ] and its flexibility capacity [ 33 , 34 ]. Furthermore, the usefulness of these porous solids for nuclear applications has been already publicized, since some MOF materials are considered for the adsorption of a radioactive gas [ 35 , 36 , 37 , 38 , 39 , 40 ] or ion sequestration [ 41 , 42 ].…”

Section: Introductionmentioning

confidence: 99%

Impact of Structural Functionalization, Pore Size, and Presence of Extra-Framework Ions on the Capture of Gaseous I2 by MOF Materials

Salles

Zając

2021

Nanomaterials

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A computational approach is used on MOF materials to predict the structures showing the best performances for I2 adsorption as a function of the functionalization, the pore size, the presence of the compensating ions, and the flexibility on which to base future improvements in selected materials in view of their targeted application. Such an approach can be generalized for the adsorption of other gases or vapors. Following the results from the simulations, it was evidenced that the maximum capacity of I2 adsorption by MOF solids with longer organic moieties and larger pores could exceed that of previously tested materials. In particular, the best retention performance was evidenced for MIL-100-BTB. However, if the capacity to retain traces of gaseous I2 on the surface is considered, MIL-101-2CH3, MIL-101-2CF3, and UiO-66-2CH3 appear more promising. Furthermore, the impact of temperature is also investigated.

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AgII doped MIL-101 and its adsorption of iodine with high speed in solution

Cited by 72 publications

References 61 publications

Surface Interactions and Mechanisms Study on the Removal of Iodide from Water by Use of Natural Zeolite-Based Silver Nanocomposites

Surface Interactions and Mechanisms Study on the Removal of Iodide from Water by Use of Natural Zeolite-Based Silver Nanocomposites

Preparation of Halloysite/Ag2O Nanomaterials and Their Performance for Iodide Adsorption

Impact of Structural Functionalization, Pore Size, and Presence of Extra-Framework Ions on the Capture of Gaseous I2 by MOF Materials

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