Superficial Tale of Two Functional Groups: On the Surface Propensity of Aqueous Carboxylic Acids, Alkyl Amines, and Amino Acids

Björneholm, Olle; Öhrwall, Gunnar; Brito, A. Naves de; Ågren, Hans; Carravetta, Vincenzo

doi:10.1021/acs.accounts.2c00494

Cited by 4 publications

(2 citation statements)

References 41 publications

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“…As shown in Figure 1b, the amino and carboxylic groups present on the surface of 2D zeolites due to the addition of amino acids can serve as active sites for being excellent catalysts and adsorbent materials. 19 Moreover, the more accessible external surface of 2D zeolites contributes to faster adsorption or reaction rates. In this work, we demonstrate the synthesis of 2D SAPOs and the applicability of surficial functional groups of the 2D materials for the effective removal of Congo red from wastewater.…”

Section: ■ Introductionmentioning

confidence: 99%

“…To the best of our knowledge, this is the first report of the synthesis of the amino-acid-containing 2D zeolitic materials and directly applying them as functional adsorbents. As shown in Figure b, the amino and carboxylic groups present on the surface of 2D zeolites due to the addition of amino acids can serve as active sites for being excellent catalysts and adsorbent materials . Moreover, the more accessible external surface of 2D zeolites contributes to faster adsorption or reaction rates.…”

Section: Introductionmentioning

confidence: 99%

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The Synthesis of Amino-Acid-Anchored Two-Dimensional Silicoaluminophosphates and Congo Red Adsorption Application

Khan,

Anjikar,

Nalabothu

et al. 2024

Langmuir

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Two-dimensional (2D) materials with nanometer thickness have the advantage of a large specific surface area and excellent surface accessibility. They have great potential for adsorption, catalysis, and many other applications. 2D zeolitic silicoaluminophosphates (SAPOs) can be synthesized through a dual structure directing agent (SDA) strategy. But the materials have been primarily used in their organic-free form. In this work, we demonstrate that the same synthesis strategy is effective for developing amino-acid-anchored 2D SAPOs through a one-step synthesis. Because of the addition of amino acids, the surficial amino and carboxylic groups serve as active sites for adsorption and catalysis. Congo red adsorption is used to evaluate the potential of using the organic functional groups as active adsorption sites. The 2D SAPO materials have demonstrated excellent Congo red removal efficiency with close to complete removal for certain concentrations. The effects of the amino acid concentration and hydrothermal synthesis time on material morphology development will be discussed. Thorough characterization by SEM, TEM, FTIR, XRD, and nitrogen adsorption has been done to reveal the properties of the amino-acid-anchored 2D SAPOs.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Synthesis of Amino-Acid-Anchored Two-Dimensional Silicoaluminophosphates and Congo Red Adsorption Application

Khan,

Anjikar,

Nalabothu

et al. 2024

Langmuir

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Covalent organic frameworks: a review of synthesis methods, properties and applications for per- and poly-fluoroalkyl substances removal

Issaka,

Adams,

Baffoe

et al. 2024

Clean Techn Environ Policy

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Adsorption using covalent organic frameworks (COFs) is very effective and favoured for removing per- and polyfluoroalkyl substances (PFAS) from various matrices. The prominent classes of COF, their synthesis methods, and their application in COF-based technologies for PFAS adsorption in myriad environments are discussed. Furthermore, the influencing PFAS adsorption characteristics of the distinct COF classes are also examined. COFs have large specific surface areas and porosity, offering PFASs a host of adsorption sites and thus high adsorption capabilities. β-Cyclodextrin-based COFs (β-CD-COFs), ionic COFs (iCOFs), amine-functionalised COFs, porphyrin-based COFs and hydrophobic COFs are some of the most notable examples of COFs and as such have been employed for large-scale PFAS remediation. Direct and post-synthetic modification are the two main COF design methodologies. The general approach in constructing various frameworks involves the reaction of ion monomers with other neutral monomers. For COFs, solvothermal synthesis is currently the main direct synthetic method. The process used to synthesise COFs tremendously impacts how effectively they adsorb PFAS. High-performance materials for PFAS remediation are created by researchers by customising COF characteristics and using suitable synthesis techniques. The authors’ objective is to give readers and researchers alike a broad overview of the current status of COF research and development, including numerous challenges and prospects associated with the adsorption of PFASs by COFs. Graphical abstract Application of Cement Stabilized OB dump, BOF slag, Fly Ash Mixes as Sustainable Pavement Material

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Adsorption dynamics of gaseous toluene with and without formaldehyde and water vapors on composites of UiO-66-NH2 and microporous carbon

Sun,

Verma,

Anand

et al. 2024

Chemical Engineering Journal

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Superficial Tale of Two Functional Groups: On the Surface Propensity of Aqueous Carboxylic Acids, Alkyl Amines, and Amino Acids

Cited by 4 publications

References 41 publications

The Synthesis of Amino-Acid-Anchored Two-Dimensional Silicoaluminophosphates and Congo Red Adsorption Application

The Synthesis of Amino-Acid-Anchored Two-Dimensional Silicoaluminophosphates and Congo Red Adsorption Application

Covalent organic frameworks: a review of synthesis methods, properties and applications for per- and poly-fluoroalkyl substances removal

Adsorption dynamics of gaseous toluene with and without formaldehyde and water vapors on composites of UiO-66-NH2 and microporous carbon

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