Identification of the Physicochemical Factors Involved in the Dye Separation via Methionine‐Functionalized Mesoporous Carbons

Gościańska, Joanna; Galarda, Aleksandra; Ejsmont, Aleksander; Wuttke, Stefan

doi:10.1002/adsu.202100013

Cited by 5 publications

(2 citation statements)

References 71 publications

(70 reference statements)

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“…The FT-IR spectra of all mesoporous carbon materials contain wide bands at ~3400 cm −1 appearing from several phenomena: the O–H stretching vibrations of the adsorbed water, the vibrations of –COOH, and the intramolecular hydrogen bonds [ 52 , 53 ]. Moreover, every sample after losartan adsorption indicates in this region a new band at 3250 cm −1 coming from the new N–H bond, which is one of the confirmations of the presence of the drug on the carbon surfaces.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Nanoporous Carbon Carriers for Losartan Potassium Delivery

et al. 2021

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Losartan potassium is most commonly used for the treatment of hypertension. In recent years, new applications of this drug have emerged, encouraging the design of novel nanoporous carriers for its adsorption and release. The purpose of this study was to synthesize ordered mesoporous carbon vehicles via a soft-templating method altered with the use of nitrogen precursors and via a hard-templating method followed by chitosan functionalization. As a result, the materials obtained differed in nitrogen content as well as in the number of total surface functional groups. The impact of the modification on the physicochemical properties of carbon carriers and their interaction with losartan potassium during adsorption and release processes was examined. The materials were characterized by various morphologies, specific surface areas (101–1180 m2 g−1), and the amount of acidic/basic oxygen-containing functional groups (1.26–4.27 mmol g−1). These features, along with pore sizes and volumes, had a key effect on the sorption capacity of carbon carriers towards losartan potassium (59–161 mg g−1). Moreover, they contributed to the differential release of the drug (18.56–90.46%). Losartan potassium adsorption onto the surface of carbonaceous materials was mainly based on the formation of hydrogen bonds and π–π interactions and followed the Langmuir type isotherm. It has been shown that the choice of the method of carbon carriers’ synthesis and their modification allows for the precise control of the kinetics of the losartan potassium release from their surface, resulting in rapid or sustained drug liberation.

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Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Nanoporous Carbon Carriers for Losartan Potassium Delivery

et al. 2021

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“…Activated carbon, metal oxides, functionalized cellulose, molecular sieves, metal-organic skeletons and porous resins have been studied and applied to the removal of organic dye pollutants [15][16][17][18][19][20][21]. At present, activated carbon adsorption material is a kind of physical adsorption method in industry which is applied widely and efficiently, and has distinctive profitable properties for dye separation, such as high surface area, uniform pore size, good mechanical and thermal stability [22]. Furthermore, the adsorption performance can be significantly improved by doping sulphur atoms into carbon-based materials, and it has a significant effect on increasing the number of active sites of the adsorbent [23].…”

Section: Introductionmentioning

confidence: 99%

Adsorption Studies on the Removal of Anionic and Cationic Dyes from Aqueous Solutions Using Discarded Masks and Lignin

Yang

Wang

et al. 2023

Molecules

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The carbon materials derived from discarded masks and lignin are used as adsorbent to remove two types of reactive dyes present in textile wastewater: anionic and cationic. This paper introduces the results of batch experiments where Congo red (CR) and Malachite green (MG) are removed from wastewater onto the carbon material. The relationship between adsorption time, initial concentration, temperature and pH value of reactive dyes was investigated by batch experiments. It is discovered that pH 5.0–7.0 leads to the maximum effectiveness of CR and MG removal. The equilibrium adsorption capacities of CR and MG are found to be 232.02 and 352.11 mg/g, respectively. The adsorption processes of CR and MG are consistent with the Freundlich and Langmuir adsorption models, respectively. The thermodynamic processing of the adsorption data reveals the exothermic properties of the adsorption of both dyes. The results show that the dye uptake processes follow secondary kinetics. The primary adsorption mechanisms of MG and CR dyes on sulfonated discarded masks and alkaline lignin (DMAL) include pore filling, electrostatic attraction, π-π interactions and the synergistic interactions between the sulphate and the dyes. The synthesized DMAL with high adsorption efficiency is promising as an effective recyclable adsorbent for adsorbing dyes, especially MG dyes, from wastewater.

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A new nitrogen-rich imine-linked neutral covalent organic framework: Synthesis and high-efficient adsorption of organic dyes

Wen,

Yuan,

et al. 2024

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Identification of the Physicochemical Factors Involved in the Dye Separation via Methionine‐Functionalized Mesoporous Carbons

Abstract: Figure 1. Small-angle X-ray diffraction patterns of pristine and methionine-functionalized mesoporous carbons of hexagonal structure A) CMK-3, CMK-3-MET, and pristine and methionine-functionalized wrinkled mesoporous carbons B) WMC, WMC-MET.

Cited by 5 publications

References 71 publications

Synthesis and Characterization of Nanoporous Carbon Carriers for Losartan Potassium Delivery

Synthesis and Characterization of Nanoporous Carbon Carriers for Losartan Potassium Delivery

Adsorption Studies on the Removal of Anionic and Cationic Dyes from Aqueous Solutions Using Discarded Masks and Lignin

A new nitrogen-rich imine-linked neutral covalent organic framework: Synthesis and high-efficient adsorption of organic dyes

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