Multi-hydroxyl containing organo-vermiculites for enhanced adsorption of coexisting methyl blue and Pb(II) and their adsorption mechanisms

Han, Lin; Wang, Tingting; Gong, Jianchao; Li, Xin; Ji, Yaxiong; Wang, Shifeng

doi:10.1016/j.colsurfa.2022.129542

Cited by 14 publications

(4 citation statements)

References 49 publications

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“…Various materials such as activated carbon [11], molecular sieves [12], clays [13], carbon nanotubes [14], chitosan [15], silica aerogels [16] and many other materials [17][18][19] have been reported as adsorbents for the removal of heavy metal ions from solutions. Compared with other adsorbents, silica aerogels have the advantage of high specific surface area, high porosity, lightweight structure, and easy surface functionalization [20].…”

Section: Introductionmentioning

confidence: 99%

Highly-efficient removal of Pb (II) from water by mesoporous amino functionalized silica aerogels: Experimental, DFT investigations and Life Cycle Assessment

Zhang

Magagnin

Yuan

et al. 2022

Microporous and Mesoporous Materials

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Section: Introductionmentioning

confidence: 99%

Highly-efficient removal of Pb (II) from water by mesoporous amino functionalized silica aerogels: Experimental, DFT investigations and Life Cycle Assessment

Zhang

Magagnin

Yuan

et al. 2022

Microporous and Mesoporous Materials

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“…These changes can be explained by the following assumptions: 1) the cationic dye can be adsorbed by the negatively charged UiO-66-TLA surface through electrostatic interactions; 2) since both UiO-66-TLA and the dye have aromatic rings, there may be π-π stacking interactions between UiO-66-TLA and BB3, resulting in a peak shift. (Xu and Ma, 2021;Han et al, 2022;Sun et al, 2022).…”

Section: T K Lmentioning

confidence: 99%

Functionalized UiO-66-NH2 by trimellitic acid for highly selective adsorption of basic blue 3 from aqueous solutions

Wang

Han

et al. 2022

Front. Chem.

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A novel metal-organic framework (MOF) UiO-66-TLA (UiO-66-Trimellitic Acid) was synthesized by one-pot method with trimellitic acid as modifier, which can effectively remove the basic dye Basic Blue 3 (BB3) in wastewater. Modification with carboxyl groups facilitates the adsorption of the cationic dye Basic Blue 3. The adsorption of BB3 by the modified UiO-66-TLA was significantly greater than that of its parent MOF. The adsorption capacity of the modified UiO-66-TLA for BB3 (234.23 mg g−1) was 93.2% higher than that of the original UiO-66-NH2 (121.24 mg g−1), this is closely related to the electrostatic interaction of -COOH in trimellitic acid. UiO-66-TLA was successfully synthesized as indicated by various characterization results. The adsorption kinetics conformed to the pseudo-second-order model, and the adsorption isotherm conformed to the Redlich-Peterson isotherm. This indicates that BB3 is a multi-parameter model of monolayer/multilayer arrangement on the adsorbent surface, and its rate-controlling step is chemisorption. The adsorption process was non-spontaneous and belonged to an endothermic reaction, in addition, it has great adsorption stability and regeneration The interaction of the modified UiO-66-TLA with BB3 was mainly affected by mechanisms, such as electrostatic interaction, π–π stacking as well as the abundant functional groups on UiO-66-TLA surface. These results demonstrate that UiO-66-TLA is an efficient, regenerable, water-stable material for the removal of BB3 in solution, with practical implications, suggesting its potential as a dye adsorbent.

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“…These properties are beneficial for the adsorption of pollutants in the environment. Therefore, many scholars have studied the use of expanded Vrm to treat the environment [ 8 , 9 , 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

The Expanded Vermiculite Was Quickly Prepared by the Catalytic Action of Manganese Dioxide on Hydrogen Peroxide and Its Adsorption Properties to Cd

et al. 2023

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The structure and activity of vermiculite can be maintained by expanding vermiculite (Vrm) with hydrogen peroxide. However, it is time-consuming. In past studies, little attention has been paid to the catalytic properties of manganese dioxide on hydrogen peroxide to improve the swelling efficiency of vermiculite. In this experiment, this catalytic effect was utilized to swell Vrm in a short time. The samples were then used to adsorb Cd from the solution. Through a series of characterization tests. The results showed that the exothermic rate was 1960.42–2089.164 J/min and the total exothermic heat was 39,208.4–41,783.28 J when expanding 10 gVrm, which could have a good expansion effect. The expansion was completed in about 40 min. Compared with Vrm, the adsorption of Cd is enhanced by about 30%. It is consistent with the proposed secondary kinetic adsorption model. This study provides a new perspective and theoretical guidance for improving the efficiency of Vrm stripping by hydrogen peroxide. A kind of expanded Vrm with better Cd adsorption efficiency was also prepared.

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Multi-hydroxyl containing organo-vermiculites for enhanced adsorption of coexisting methyl blue and Pb(II) and their adsorption mechanisms

Cited by 14 publications

References 49 publications

Highly-efficient removal of Pb (II) from water by mesoporous amino functionalized silica aerogels: Experimental, DFT investigations and Life Cycle Assessment

Highly-efficient removal of Pb (II) from water by mesoporous amino functionalized silica aerogels: Experimental, DFT investigations and Life Cycle Assessment

Functionalized UiO-66-NH2 by trimellitic acid for highly selective adsorption of basic blue 3 from aqueous solutions

The Expanded Vermiculite Was Quickly Prepared by the Catalytic Action of Manganese Dioxide on Hydrogen Peroxide and Its Adsorption Properties to Cd

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