Selective adsorption of trivalent metal ions from multielement solution by using gamma radiation-induced pectin-acrylamide-(2-Acrylamido-2-methyl-1-propanesulfonic acid) hydrogel

Bhuyan, Murshed; Adala, Omondi Brian; Okabe, Hirotaka; Hidaka, Yoshiki; Hara, Kazuhiro

doi:10.1016/j.jece.2018.102844

Cited by 30 publications

(15 citation statements)

References 46 publications

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“…The peak at 22.48 o broadened in the case of V-D-G1-Ni and V-D-G1-Cr and even disappeared for V-D-G1-Cd indicating enrichment of an amorphous structure of V-D, suggesting rupture of hydrogen bonds by interaction of N atoms of imidazole with heavy metal ions after metal complexation. Similar results have been reported before describing loss in crystallinity of hydrogels after complex formation [34].…”

Section: Xrd Analysissupporting

confidence: 91%

“…For Cd(II) and Ni(II), heterogeneous holes and some small openings were seen on the surface which increases the surface area and improves metal ions adsorption. About Cr(VI) hydrogels, the adsorbent surface became abnormal and a great deal of crystal adhered to the surface [34,35]. As can be seen in the Fig.…”

Section: Surface Analysismentioning

confidence: 94%

“…%) would result in a porous and heterogeneous network channels with a uniform dispersion of NGQDs throughout hydrogel matrix. In the solution of metal ion, the hydrogel starts swelling which facilitate the functional groups to come closure of metal ions and thus adsorption takes place [14,30,34] .Fig. 3c-e shows the morphology of V-D-G1 after Cd, Ni and Cr ions adsorption, where the metal gets adsorbed through the interaction with the imidazole and other adsorbing groups.…”

Section: Surface Analysismentioning

confidence: 99%

“…The for metal ions is high, and it could be attributed to the presence of imidazole moieties, dicationic groups of DIL and carboxylic acid and amine groups of NGQDs in the hydrogel, which can be explained by their noncovalent interaction with the metal ions [34,[36][37][38]. The Langmuir isotherm constant ( ) is found to be 0.0105, 0.0069 and 0.0504 L/mg for V-D-G1-Cd, V-D-G1-Ni and V-D-G1-Cr, respectively, which predicts the strong coordinate covalent interaction between the metal ions and the adsorbent.…”

Section: Langmuir Adsorption Isothermmentioning

confidence: 99%

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Poly (N-vinyl Imidazole)/Nitrogen-Doped Graphene Quantum Dot Hydrogel Adsorbent With Remarkable Capability for Metal Ion Removal From Aqueous Systems

Massoudi

Bagheri

Hosseini

2021

Preprint

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The present work studies the adsorptive removal of cadmium, nickel and chromium ions from an aqueous solution using a highly efficient nanocomposite adsorbent hydrogel. pH-sensitive nanocomposite hydrogels prepared easily by the free radical polymerization of N‑vinyl imidazole (VI) monomer using N, N′- methylene-bis-acrylamide (MBA) and dicationic imidazolium-based (DIL) cross-linkers with molar ratios of monomer/cross-linker in the presence of 0.0, 0.9 and 4.0 wt.% nitrogen doped graphene quantum dots (NGQD). The prepared hydrogel (PVI/NGQD) with higher swelling degree (V-D-G1) with molar ratio of VI/DIL=24 and 4.0 wt.% NGQD was a prominent candidate for adsorption study of three elements (Cd, Ni, and Cr) from the solution. FT-IR, DSC, XRD, SEM, and EDS analysis were used to characterize the structure and the surface morphology of adsorbent before and after the metal ions adsorption. The effects of pH, initial concentration of ions and contact time on the adsorption capacity of the hydrogel were also studied. Adsorption of ions were investigated at pH 1.0, 7.0 and 9.0 and maximum removal efficiencies for Cd(II), Ni(II) and Cr(VI) ions (75%, 94.6% and 70.9%) were achieved at pH=7.0 and optimum ions concentration and contact time of 1000 mg/L, and 40, 40 and 150 min, respectively. The maximum adsorption capacity values of V-D-G1 is found to be 5000, 5000 and 370.370 mg/g for Cd(II), Ni(II) and Cr(VI), respectively. The adsorption data were used to study the adsorption kinetic and isotherm models in which Langmuir model and pseudo-first order model showed the better applicability.

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Section: Xrd Analysissupporting

confidence: 91%

Section: Surface Analysismentioning

confidence: 94%

Section: Surface Analysismentioning

confidence: 99%

Section: Langmuir Adsorption Isothermmentioning

confidence: 99%

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Poly (N-vinyl Imidazole)/Nitrogen-Doped Graphene Quantum Dot Hydrogel Adsorbent With Remarkable Capability for Metal Ion Removal From Aqueous Systems

Massoudi

Bagheri

Hosseini

2021

Preprint

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“…A self-healable material is capable to mend itself owing to a damage, extending it durability. , Therefore, the preparation of novel secure ink with self-healing properties has been important for cutting-edge anticounterfeiting applications. Various derivatives of poly(2-acrylamido-2-methyl-1-propanesulfonic acid) (PAMPSA) have been used as an efficiently self-healable polymer. , PAMPSA-based self-healable hydrogels have been used as an appropriate and biocompatible matrix for a variety of pharmaceutical materials like skin care products. − Hence, PAMPSA can be utilized as a suitable supportive composite ink integrated with the anthocyanidin (ACY)-based red-cabbage extract in the presence of ferrous sulfate.…”

Section: Introductionmentioning

confidence: 99%

Development of Thermochromic Ink Using the Anthocyanidin-Based Red-Cabbage Extract for Anticounterfeiting Applications

et al. 2022

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Temperature-driven colorful switching inks have been an interesting security encoding method to improve the anticounterfeiting properties of commercially available merchandise. Recently, thermochromic inks have faced many disadvantages, such as low efficiency, high cost, and low durability. In the current study, we developed self-healable ink from poly(2-acrylamido-2-methyl-1-propanesulfonic acid) (PAMPSA) integrated with the anthocyanidin(ACY)-based red-cabbage extract in the presence of ferrous sulfate for authentication purposes. Self-healable inks have been able to guarantee durability and thermal stability. Environmentally friendly, ACY-based chromophore was extracted from Brassica oleracea L. var. Capitata (red-cabbage) to serve as a spectroscopic probe immobilized into PAMPSA. The prepared self-healable nanocomposite ink (PAMPSA-ACY) displayed temperature-induced chromism with high reversibility and thermal stability. Different self-healable nanocomposite inks of thermochromic features were prepared employing different ratios of the ACY-based red-cabbage extract. As described by Commission Internationale de L’éclairage Lab coordinates, homogeneous films were stamped on the paper surface to show a purple color (631 nm) able to switch color into red (458 nm) with the increase in temperature from 25 to 65 °C, respectively. Transmission electron microscopy, infrared spectra (FT-IR), energy-dispersive X-ray, and scanning electron microscopy were utilized to inspect the morphological behavior and chemical compositions of thermochromic prints. Both mechanical and rheological properties of ink-printed paper substrates and ink solution were also investigated. Both of antimicrobial activity and cytotoxicity study of the nanocomposite ink (PAMPSA-ACY) were also evaluated. Various industries can take the advantage of the current ink as a competent approach for anticounterfeiting purposes.

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Polymeric Hydrogels—A Promising Platform in Enhancing Water Security for a Sustainable Future

Loo

Vásquez

Athanassiou

et al. 2021

Adv Materials Inter

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anthropogenic activities that have led to saline intrusion and contamination of the existing freshwater sources, making the current approaches for water treatment even more difficult and costly. [2][3][4] This, in combination with the continuously rising global water demand, results in a rather pessimistic prediction that an additional 2000 billion m 3 of freshwater supply will be required by 2030 to meet the global demand, assuming no gains on the current state of water-production capacity and efficiency. [5,6] As the existing freshwater sources are being depleted, there is a growing need for utilization of a broader range of water sources beyond the conventional ones, that is, brackish water, seawater, wastewater, and atmospheric moisture. [7] On top of that, there is a call for a greater focus on enhancing water security, particularly for the poor and vulnerable populations, as water scarcity is more critical in these geographical regions due to the lack of access to conventional infrastructure and power sources to produce clean water. [1,8,9] This, in addition to the increasing intensity and frequency of climate-related disasters, present unique demands, such as simple and off-grid operations, for water technologies (WTs) that can be deployed to manage the constraints imposed by these circumstances. [10]

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Selective adsorption of trivalent metal ions from multielement solution by using gamma radiation-induced pectin-acrylamide-(2-Acrylamido-2-methyl-1-propanesulfonic acid) hydrogel

Cited by 30 publications

References 46 publications

Poly (N-vinyl Imidazole)/Nitrogen-Doped Graphene Quantum Dot Hydrogel Adsorbent With Remarkable Capability for Metal Ion Removal From Aqueous Systems

Poly (N-vinyl Imidazole)/Nitrogen-Doped Graphene Quantum Dot Hydrogel Adsorbent With Remarkable Capability for Metal Ion Removal From Aqueous Systems

Development of Thermochromic Ink Using the Anthocyanidin-Based Red-Cabbage Extract for Anticounterfeiting Applications

Polymeric Hydrogels—A Promising Platform in Enhancing Water Security for a Sustainable Future

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