Designing of hydroxyl terminated triazine-based dendritic polymer/halloysite nanotube as an efficient nano-adsorbent for the rapid removal of Pb(II) from aqueous media

Zandi-Mehri, Elham; Taghavi, Lobat; Moeinpour, Farid; Khosravi, Iman; Ghasemi, Saber

doi:10.1016/j.molliq.2022.119407

Cited by 21 publications

(6 citation statements)

References 79 publications

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“…These parameters were calculated using Equations (12)–(14). [ 50,51 ]

K_{L} goodbreak= \frac{{normalC}_{ad}}{{normalC}_{normale}}

\ln K_{L} goodbreak= goodbreak- \frac{∆ normalH °}{RT} goodbreak+ \frac{∆ normalS °}{R}

∆ normalG ° goodbreak= ∆ normalH ° goodbreak- normalT ∆ normalS °

where K L (mL g −1 ) is the value of the HTMIs distribution coefficient, T is the value of the taken temperature (Kelvin), and R is the gas constant (8.314 in J mol −1 K −1 ).…”

Section: Resultsmentioning

confidence: 99%

Synthesis of carboxylic graphene oxide‐carboxymethyl chitosan composite and its applications toward the remediation of U⁶⁺, Pb²⁺, Cr⁶⁺, and Cd²⁺ ions from aqueous solutions

Patel

Sutar

Maharana

2022

J Chinese Chemical Soc

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The current research work deals with the synthesis of a novel composite material of carboxylic graphene oxide-carboxymethyl chitosan (COOH-GO-CMC) composite by ultrasound and microwave-assisted processes. The composite was characterized by Fourier Transform Infra-red spectroscopy, X-ray Powder Diffraction, Raman Spectroscopy, Scanning Electron Microscopy, and X-ray Photoelectron Spectroscopy. The synthesized composite was used to remove heavy toxic metal ions (HTMIs) such as uranium (U 6+ ), lead (Pb 2+ ), chromium (Cr 6+ ), and cadmium (Cd 2+ ) ions from aqueous solutions. The HTMIs removal study was carried out to verify the effects of pH, contact time, amount of adsorbent dose, initial concentration, and temperature. The linear and nonlinear Langmuir and Freundlich adsorption isotherms were fitted to the data of removal studies, and it was observed that the linear Langmuir adsorption isotherm (R 2 > 0.99) was the best-fitted model. The maximum adsorption capacities of COOH-GO-CMC were found to be 74. 62, 416.66, 76.92, and 53.47 mg g À1 for U 6+ , Pb 2+ , Cr 6+ , and Cd 2+ ions, respectively. The kinetics studies, including four types of models (linear and nonlinear pseudo-firstorder, linear and nonlinear pseudo-second-order, Intraparticle diffusion, and Elovich kinetic models), were tested, and the results showed that the linear pseudo-second-order kinetics model (R 2 > 0.99) was the best-fitted model. The thermodynamic studies reveal that the adsorption of HTMIs is a spontaneous (ΔG < 0) and exothermic (ΔH < 0 and ΔS > 0) process in nature.adsorption isotherm, carboxymethyl chitosan, graphene oxide, heavy metal ion removal | INTRODUCTIONAny metallic element with a comparatively high density that is toxic or poisonous even at low concentrations is referred to as "heavy metal." Heavy metals are defined as metals with an atomic number greater than 20 and an atomic density greater than 4 g cm À3 , or 5 times the density of water. [1] As a result of rapid industrialization, hazardous contaminants are discharged in large quantities into different water bodies. As these contaminants are non-degradable, toxic, cancer-causing agents, and difficult to remove from water, heavy toxic metal ions

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“…These parameters were calculated using Equations (12)–(14). [ 50,51 ]

K_{L} goodbreak= \frac{{normalC}_{ad}}{{normalC}_{normale}}

\ln K_{L} goodbreak= goodbreak- \frac{∆ normalH °}{RT} goodbreak+ \frac{∆ normalS °}{R}

∆ normalG ° goodbreak= ∆ normalH ° goodbreak- normalT ∆ normalS °

where K L (mL g −1 ) is the value of the HTMIs distribution coefficient, T is the value of the taken temperature (Kelvin), and R is the gas constant (8.314 in J mol −1 K −1 ).…”

Section: Resultsmentioning

confidence: 99%

Synthesis of carboxylic graphene oxide‐carboxymethyl chitosan composite and its applications toward the remediation of U⁶⁺, Pb²⁺, Cr⁶⁺, and Cd²⁺ ions from aqueous solutions

Patel

Sutar

Maharana

2022

J Chinese Chemical Soc

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“…The formula

establishes the dimensionless factor R L , where its magnitude represents the adsorption traits. An R L value from 0 to 1 denotes suitable adsorption, R L exceeding 1 implies unsuitable adsorption, and R L equating to 0 signifies unalterable adsorption [ 55 ]. In the current research, the observed RL values varied between 0.1574 and 0.0043, signifying the efficient adsorption of As(III) onto the TFPOTDB-SO 3 H substance.…”

Section: Resultsmentioning

confidence: 99%

New sulfonated covalent organic framework for highly effective As(III) removal from water

Khosravani,

Dehghani Ghanatghestani,

Moeinpour

et al. 2024

Heliyon

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“…In some cases, the adsorption process is reversible and the adsorbent can be recovered through the desorption process [5]. Substances such as graphene, magnetic nanoparticles, nanoclays, and composites have been employed for this purpose due to their high catalytic performance and great adsorption capacity [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Fe₃O₄@SiO₂‐APTES@Isophthaloyl Dichloride/Montmorillonite Magnetic Nanoparticles for Efficient Removal of Pb²⁺ and Cd²⁺

Yazdani,

Fozooni,

Khabazzadeh

et al. 2023

Chem Eng & Technol

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A novel magnetic nanocomposite for removing Cd 2+ and Pb 2+ was prepared by surface coating of Fe 3 O 4 nanoparticles with (3-aminopropyl)triethoxysilane (APTES), followed by functionalization with isophthaloyl dichloride and hybridization with nano montmorillonite (MMT). The structure of the resulting nanocomposite was determined. The Fe 3 O 4 @SiO 2 -APTES@isophthaloyl dichloride/ MMT nanocomposite was successfully used to remove Cd 2+ and Pb 2+ from aqueous solutions. Several tests were designed using response surface methodology and the variables were predicted by the reduced quartic model. Absorption parameters such as time, pH, and initial cation concentration were considered as independent variables. The effects of each on the removal of Cd 2+ and Pb 2+ ions were examined. The efficiency of the model was evaluated by analysis of variance.

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Designing of hydroxyl terminated triazine-based dendritic polymer/halloysite nanotube as an efficient nano-adsorbent for the rapid removal of Pb(II) from aqueous media

Cited by 21 publications

References 79 publications

Synthesis of carboxylic graphene oxide‐carboxymethyl chitosan composite and its applications toward the remediation of U⁶⁺, Pb²⁺, Cr⁶⁺, and Cd²⁺ ions from aqueous solutions

Synthesis of carboxylic graphene oxide‐carboxymethyl chitosan composite and its applications toward the remediation of U⁶⁺, Pb²⁺, Cr⁶⁺, and Cd²⁺ ions from aqueous solutions

New sulfonated covalent organic framework for highly effective As(III) removal from water

Fe₃O₄@SiO₂‐APTES@Isophthaloyl Dichloride/Montmorillonite Magnetic Nanoparticles for Efficient Removal of Pb²⁺ and Cd²⁺

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Designing of hydroxyl terminated triazine-based dendritic polymer/halloysite nanotube as an efficient nano-adsorbent for the rapid removal of Pb(II) from aqueous media

Cited by 21 publications

References 79 publications

Synthesis of carboxylic graphene oxide‐carboxymethyl chitosan composite and its applications toward the remediation of U6+, Pb2+, Cr6+, and Cd2+ ions from aqueous solutions

Synthesis of carboxylic graphene oxide‐carboxymethyl chitosan composite and its applications toward the remediation of U6+, Pb2+, Cr6+, and Cd2+ ions from aqueous solutions

New sulfonated covalent organic framework for highly effective As(III) removal from water

Fe3O4@SiO2‐APTES@Isophthaloyl Dichloride/Montmorillonite Magnetic Nanoparticles for Efficient Removal of Pb2+ and Cd2+

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Product

Resources

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Synthesis of carboxylic graphene oxide‐carboxymethyl chitosan composite and its applications toward the remediation of U⁶⁺, Pb²⁺, Cr⁶⁺, and Cd²⁺ ions from aqueous solutions

Synthesis of carboxylic graphene oxide‐carboxymethyl chitosan composite and its applications toward the remediation of U⁶⁺, Pb²⁺, Cr⁶⁺, and Cd²⁺ ions from aqueous solutions

Fe₃O₄@SiO₂‐APTES@Isophthaloyl Dichloride/Montmorillonite Magnetic Nanoparticles for Efficient Removal of Pb²⁺ and Cd²⁺