Synthesis of chitosan composite of metal-organic framework for the adsorption of dyes; kinetic and thermodynamic approach

Saeed, Tooba; Akhtar, Naeem; Din, Israf Ud; Farooq, Muhammad; Khan, Ihtisham Wali; Hamayun, Muhammad; Malik, Tabasum

doi:10.1016/j.jhazmat.2021.127902

Cited by 154 publications

(42 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After performance test, AMSA can remove 79 % MB in 30 min, and the maximum adsorption capacity can reach 1593 mg/g. This is much higher than the adsorption capacity previously reported for the adsorbent, 11 times that of Co-MOF (148 mg/g), [28] and 3 times that of activated carbon (580 mg/g) [29] and GO (570.4 mg/g). [30] Even the adsorption performance of AMSA is nearly 2.4 times higher than that of calcium ion cross-linked sodium alginate composite (SA/PPyNT composite microbeads, 666.7 mg/g).…”

Section: Introductioncontrasting

confidence: 59%

Efficient Adsorption of Methylene Blue in Aqueous Solution by Acid‐modified Sodium Alginate

Chen

et al. 2022

ChemistrySelect

View full text Add to dashboard Cite

The acid-modified sodium alginate (AMSA) was synthesized utilizing a simple acidification method and its synthesis was confirmed by acid-base titration method, SEM, XRD, FTIR, TGA and BET. The sodium alginate after acidification, with a large number of carboxyl groups introduced, was favorable to the adsorption of methylene blue (MB) from water. The maximum adsorption capacity calculated by Langmuir model was up to 1593 mg/g, which was significantly higher than the adsorption capacity of other adsorbents reported. The adsorption rate of MB by AMSA was very fast. After the addition of adsorbent, the adsorption removal rate reached 79 % in 30 min, and the adsorption was balanced in 120 min (94 % of MB was removed). Furthermore, electrostatic interaction and hydrogen bonding, pore-filling and chemisorption were considered as the main adsorption mechanisms. AMSA is expected to be an optimal candidate for efficient and rapid removal of MB due to its simple synthesis, abundant sources, easy separation and no secondary pollution.

show abstract

Section: Introductioncontrasting

confidence: 59%

Efficient Adsorption of Methylene Blue in Aqueous Solution by Acid‐modified Sodium Alginate

Chen

et al. 2022

ChemistrySelect

View full text Add to dashboard Cite

show abstract

“…Conversely, as we increase the pH range from neutral to alkaline, pH = 11, it can be seen that the adsorption capacity (∼42%) decreases significantly due to the negative part of MB interacting with the base forming NaCl. 63 , 69c , 70 , 71a The effect of pH on the uptake capacity has been shown with 1 being a better adsorbent at a pH of 7 with 85.2% removal efficiency of MB dye.…”

Section: Resultsmentioning

confidence: 99%

Construction of a 3D Metal–Organic Framework and Its Composite for Water Remediation via Selective Adsorption and Photocatalytic Degradation of Hazardous Dye

et al. 2022

View full text Add to dashboard Cite

In this work, a new bimetallic Na(I)–Zn(II) metal–organic framework (MOF), formulated as [Na 2 Zn 3 (btc) 2 (μ-HCOO) 2 (μ-H 2 O) 8 ] n ( 1 ) (H 3 btc = benzene tricarboxylic acid), and its composite (ZnO@ 1 ) have been successfully synthesized using solvothermal and mechanochemical solid grinding methods. 1 and ZnO@ 1 were characterized by diffraction [single-crystal X-ray diffraction (XRD) and powder XRD], spectroscopic (ultraviolet–visible diffuse reflectance spectroscopy and Fourier transform infrared spectroscopy), microscopic (transmission electron microscopy), and thermal (thermogravimetric analysis) methods. The surface area and porosity of 1 were determined using a Brunauer–Emmett–Teller analyzer. Single-crystal diffraction of 1 confirms that Na1 and Zn2 have octahedral coordination environments, whereas Zn1 has a tetrahedral coordination geometry. Topological simplification of 1 shows a 3,6-connected kgd net. Na(I)–Zn(II) MOF ( 1 ) is crystallized with slight porosity and exhibits good tendency toward the encapsulation of zinc oxide nanoparticles (ZnO NPs). The photocatalytic behaviors of 1 and its composite (ZnO@ 1 ) were investigated over MB dye under sunlight illumination with promising degradation efficiencies of 93.69% for 1 and 97.53% for ZnO@ 1 in 80 min.

show abstract

“…To determine the process, the following thermodynamic parameters must be considered: changes in standard enthalpy ΔH⁰ and standard entropy ΔS⁰ caused by the transfer of a unit mole of dye from solution to the biosorbent-liquid interface. Using the Van't Hoff equation, the values of ΔH⁰ and ΔS⁰ can be calculated from adsorption data at different temperatures (Saeed et al 2022). Thermodynamic studies have been completed at various temperatures (25 ℃, 35 ℃, 45 ℃, and 55 ℃) and ΔH⁰, ΔS⁰ and ΔG⁰ values were calculated (Table 4.).…”

Section: Thermodynamic Studiesmentioning

confidence: 99%

Efficient Decolorization of Anionic Dye (Methyl Blue) by Natural-Based Biosorbent (nano-Magnetic Sophora Japonica Fruit Seed Biochar)

Bayram¹,

KOKSAL²,

MORAL³

et al. 2022

EPSTEM

View full text Add to dashboard Cite

Today, various methods are used to remove the dye pollution in the increasing water. Adsorption is a fast and effective method that has been used since the past. The value of the obtained adsorption capacity varies according to the type of biosorbent material used. The seeds of the fruit of Sophora Japonica (SJfs), a tree commonly found in nature, were pyrolyzed at 450°C to produce biochar (SJfsB) in this study. Iron nanoparticles were immobilized into the SJfsB structure to form a more active biosorbent matrix. The obtained SJfsB and nM-SJfsB were used in the removal of methyl blue, an anionic dye. SJfsB and nM-SJfsB used for dye removal were characterized by FT-IR and SEM instruments. The obtained results revealed that the adsorption process occurred in the pseudo-second-order and was consistent with the Langmuir model. The maximum adsorption capacity for MB removal was 434.783 mg/g for nM-SJfsB and 76.923 mg/g for SJfsB, respectively.

show abstract

Synthesis of chitosan composite of metal-organic framework for the adsorption of dyes; kinetic and thermodynamic approach

Cited by 154 publications

References 50 publications

Efficient Adsorption of Methylene Blue in Aqueous Solution by Acid‐modified Sodium Alginate

Efficient Adsorption of Methylene Blue in Aqueous Solution by Acid‐modified Sodium Alginate

Construction of a 3D Metal–Organic Framework and Its Composite for Water Remediation via Selective Adsorption and Photocatalytic Degradation of Hazardous Dye

Efficient Decolorization of Anionic Dye (Methyl Blue) by Natural-Based Biosorbent (nano-Magnetic Sophora Japonica Fruit Seed Biochar)

Contact Info

Product

Resources

About