Fabrication and optimization calix[8]arene-PbS nanoadsorbents for the adsorption of methylene blue: Isotherms, kinetics and thermodynamics studies

Rosly, Nor Zida; Ishak, Syahirah; Abdullah, Abdul Halim; Kamarudin, Mazliana Ahmad; Ashari, Siti Efliza; Ahmad, Shahrul Ainliah Alang

doi:10.1016/j.jscs.2021.101402

Cited by 17 publications

(5 citation statements)

References 57 publications

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“…Based on the R 2 value, the Langmuir isotherm was selected to describe the adsorption of BSA on the CS/β-CDP composite membrane. This result may confirm the monolayer adsorption of BSA onto the CS/β-CDP composite membrane surface [51,52]. The adsorption sites are evenly distributed on the surface [53,54], which is in direct contact with CS/β-CDP composite membrane [55].…”

Section: Adsorption Isothermssupporting

confidence: 61%

Preparation of Chitosan/β-Cyclodextrin Composite Membrane and Its Adsorption Mechanism for Proteins

Liu

Lei

et al. 2023

Molecules

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A significant portion of the protein in food waste will contaminate the water. The chitosan/modified β-cyclodextrin (CS/β-CDP) composite membranes were prepared for the adsorption of bovine serum albumin (BSA) in this work to solve the problem of poor adsorption protein performance and easy disintegration by a pure chitosan membrane. A thorough investigation was conducted into the effects of the preparation conditions (the mass ratio of CS and β-CDP, preparation temperature, and glutaraldehyde addition) and adsorption conditions (temperature and pH) on the created CS/β-CDP composite membrane. The physical and chemical properties of pure CS membrane and CS/β-CDP composite membrane were investigated. The results showed that CS/β-CDP composite membrane has better tensile strength, elongation at break, Young’s modulus, contact angle properties, and lower swelling degree. The physicochemical and morphological attributes of composite membranes before and after the adsorption of BSA were characterized by SEM, FT-IR, and XRD. The results showed that the CS/β-CDP composite membrane adsorbed BSA by both physical and chemical mechanisms, and the adsorption isotherm, kinetics, and thermodynamic experiments further confirmed its adsorption mechanism. As a result, the CS/β-CDP composite membrane of absorbing BSA was successfully fabricated, demonstrating the potential application prospect in environmental protection.

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Section: Adsorption Isothermssupporting

confidence: 61%

Preparation of Chitosan/β-Cyclodextrin Composite Membrane and Its Adsorption Mechanism for Proteins

Liu

Lei

et al. 2023

Molecules

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“…For instance, Kamboh et al, reported that 94% of MB removal was recorded for p -sulphonatocalix[8]arene-based silica resin at pH 9.5 at adsorbent dosage of 40 mg/L [13]. Meanwhile, in another study, calix[8]arene modified sulphur exhibited >90% MB removal at pH 6 with adsorbent dosage of 45 mg/L and 180 minutes contact time [42]. Silica gel supported dinitro calix[4]arene cage, was reported to achieve 93% MB removal at pH 12 with 0.05 mg/L of adsorbent dosage and 120 minutes contact time.…”

Section: Resultsmentioning

confidence: 99%

Surface Characteristics of Electrospun p-Sulphonated Calix[4]Arene Functionalized Cellulose Acetate Nanofiber and Its Behaviour towards Methylene Blue Adsorption

Basri

Wahid

Zainal

et al. 2022

Adsorption Science & Technology

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p-sulphonated calix[4]arene (p-SOCX) functionalized cellulose acetate/graphene oxide (CA/GO) nanofibers were successfully prepared via the electrospinning technique. The presence of p-SOCX within the fiber matrix was ascertained using Fourier Transform Infrared spectroscopy and Carbon-Hydrogen-Nitrogen-Sulphur elemental analyses. Apparent changes in morphology of the samples were observed under scanning electron microscope where fiber diameters increased with increasing p-SOCX content. Preliminary dye removal test at different pH, dosage, and temperature of functionalized CA/GO nanofiber demonstrates enhanced adsorption capacity of methylene blue in presence of p-SOCX compared to pristine CA nanofiber and CA/GO nanofiber at an optimum pH 8. The highest removal efficiency obtained was 88.84% with initial methylene blue dye concentration of 10 mg/L, adsorbent dosage of 20 mg/10 mL, contact time of 30 min at room temperature ca. 293 K.

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“…NaCl salt solutions (15 mL) of different concentrations were placed in sealed glass bottles, and 0.5 g of PAMC-1 was added, and after 30 h of oscillating adsorption, the concentration changes were measured by a PXSJ-216F ion meter to determine the concentration change. To better illustrate the adsorption mechanism of PAMC, the non-linear fitting of the Langmuir model [ 24 , 25 ] and the Freundlich model [ 26 ] were used to simulate the adsorption in this paper. The amount of chloride bound in PAMC was calculated using Equation (3):

where W is the adsorption content of PAMC (mg/g), M is the relative mass fraction of Cl, V is the volume of solution (L), C 0 is the initial concentration of solution (mol/L), C is the concentration after adsorption (mol/L), and m is the mass of PAMC gel.…”

Section: Methodsmentioning

confidence: 99%

Study on a Hydrogel for Adsorption of Chloride Ions in Cementitious Materials

Cao

Zhang

et al. 2022

Polymers

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Chloride ions in the seaside environment can corrode the steel reinforcement in concrete, which greatly endangers the safety of seaside structures. As an excellent adsorption material, hydrogel is widely used in the field of water treatment but is rarely used in cementitious materials. In this study, a polyacrylamide–chitosan hydrogel (PAMC) was prepared with N,N-methylenebisacrylamide as the cross-linking agent and acrylamide as the monomer. The prepared PAMC gel could effectively adsorb chloride ions in simulated seawater and simulated sea sand environments, and the maximum adsorption capacity of chloride ions by PAMC-1 (prepared from 2.5 g acrylamide and 1% content of N,N-methylenebisacrylamide relative to acrylamide) gels in simulated seawater was 55.53 mg/g. The adsorption behavior of the PAMC gels in solution fit the Langmuir isotherm model. The composition and morphology of the PAMC gel were characterized, and the responsiveness of the PAMC gel to the environment was studied. The results showed that the PAMC gels adsorbed better in alkaline environments and thus could be used in alkaline cement-based environments. The mortar sample containing the PAMC-1 gel had higher resistance to chloride ion penetration, and the chloride ion content at 7.5–10mm from the surface of the sample cured for 28 days was reduced by 41.4% compared to the samples without the gel.

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Fabrication and optimization calix[8]arene-PbS nanoadsorbents for the adsorption of methylene blue: Isotherms, kinetics and thermodynamics studies

Cited by 17 publications

References 57 publications

Preparation of Chitosan/β-Cyclodextrin Composite Membrane and Its Adsorption Mechanism for Proteins

Preparation of Chitosan/β-Cyclodextrin Composite Membrane and Its Adsorption Mechanism for Proteins

Surface Characteristics of Electrospun p-Sulphonated Calix[4]Arene Functionalized Cellulose Acetate Nanofiber and Its Behaviour towards Methylene Blue Adsorption

Study on a Hydrogel for Adsorption of Chloride Ions in Cementitious Materials

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