Synthesis, characterization, and performance evaluation of ion-imprinted crosslinked chitosan (with sodium tripolyphosphate) for cadmium biosorption

Babakhani, Ataollah; Sartaj, Majid

doi:10.1016/j.jece.2022.107147

Cited by 38 publications

(10 citation statements)

References 111 publications

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“…[ 45 ] In the case of chemical crosslinking, different chemical species, including Glutaraldehyde, Genipin, Ethylene Glycol, Diglycidyl Ether, Glyoxal, and Epichlorohydrin have been proposed for condensation reaction between the CS amino groups. [ 46 ] Nevertheless, although stable and non‐dissolvable materials are obtained under these conditions, the chemical reaction itself (e.g., Schiff base formation with di‐aldehyde species) can cause residual toxicity. [ 47,48 ] On the other hand, the use of anion compounds as a tool for the formation of hydrogel systems through electrostatic interactions have been explored.…”

Section: Resultsmentioning

confidence: 99%

“…[54] The strength of the hydrogel increases with increased amount of TPP, but the crosslinking reduces the number of amino and hydroxyl groups in chitosan backbone, thus negatively affecting both the swelling properties and the interactions with bioactive molecules. [46] In this work, we adopted a straightforward procedure where a CS-GO homogeneous dispersion underwent ionotropic gelation by means of TPP ions diffusion from an agar gel platform. [55] Such a platform ensured a uniform and slow diffusion of crosslinking ions into CS-GO mixture, thus allowing the obtainment of a homogeneous hybrid hydrogel (H CS-GO ) (Figure 1).…”

Section: Synthesis and Physico-chemical Characterization Of Hybrid Hy...mentioning

confidence: 99%

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Evaluating the Efficiency of Chitosan‐Graphene Oxide Hybrid Hydrogels as Drug Delivery Systems

Luca

Poursani

Curcio

et al. 2023

Macro Materials & Eng

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With the objective of creating an electro‐responsive and antimicrobial device suitable as delivery system for Rose Bengal (RB) to the skin, a hybrid hydrogel combining Chitosan (CS) and Graphene Oxide (GO) are designed, serving as functional polymer support and active filling element, respectively. The hybrid system, synthesized using tripolyphosphate as a crosslinker via ionic gelation, shows a uniform and homogeneous surface, as verified by SEM investigations, high biocompatibility when tested on human fibroblast lung cells MRC‐5 cells, and biodegradability in phosphate buffered medium at physiological pH. Drug loading and release experiments, extensively analyzed using suitable mathematical modeling, shows the enhancement of the binding efficiency conferred by GO (534 and 979 mg g−1 for blank and hybrid hydrogels, respectively) and an electro‐responsive behavior (maximum BR release of 36 and 23% at 0 and 12 V, respectively). Additionally, hybrid hydrogel is found to prevent the adhesion of methicillin‐resistant Staphylococcus aureus and to kill the bacterial cells by taking advantage of the sustained release of the antimicrobial RB.

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Section: Resultsmentioning

confidence: 99%

Section: Synthesis and Physico-chemical Characterization Of Hybrid Hy...mentioning

confidence: 99%

Evaluating the Efficiency of Chitosan‐Graphene Oxide Hybrid Hydrogels as Drug Delivery Systems

Luca

Poursani

Curcio

et al. 2023

Macro Materials & Eng

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“…The correlation coefficient of the pseudo-second-order kinetic model (R 2 = 0.986) is closer to 1 than that of the pseudo-first-order kinetic model (R 2 = 0.939), which is shown in Figure S2 and Table 3, so the actual Cd(II) adsorption kinetic effect is more similar to that of the pseudo-secondorder kinetic model; the adsorption process is mainly surface chemical adsorption. 50 Table 4 summarizes the maximum adsorption capacity of some Cd(II)-ion-imprinted polymers for Cd(II) reported in recent years, which showed that Cd(II)-IIP has a higher adsorption capacity for Cd(II) ions compared to most Cd(II)-imprinted polymers.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Preparation and Characterization of Cadmium(II)-Ion-Imprinted Composites Based on Epoxy Resin

Zhu

Chen

Zhang

et al. 2022

ACS Appl. Polym. Mater.

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In recent years, ion-imprinting technology has been frequently employed to selectively eliminate heavy metals from aqueous solutions. In this study, an environment-friendly porous cadmium-ion-imprinted composite (Cd(II)-IIP) based on epoxy resin was prepared using Cd(II) ion as a template, polyethylene glycol as a porogen, epoxy resin as the carrier, and polyethylene polyamine as complexation agent and curing agent via surface imprinting technique and stepwise polymerization process. Cd(II)-IIP was further characterized using SEM-EDS, FT-IR, TGA, and XPS, the systematic adsorption investigation of Cd(II)-IIP for the Cd(II) ions was explored. The research found that the adsorption capacity of Cd(II) got to the maximum value (q m = 64.74 mg/g) at pH = 4.0 and T = 318 K and the Cd(II)-IIP had high selectivity for Cd(II) in the presence of polymetallic ions and still has good recoverability after five cycles. The results showed that the adsorption process was closer to the pseudo-second-order kinetic model, and the isothermal curves of the experimental data were more consistent with the Langmuir adsorption model, which indicated that the whole process of adsorption was mainly monolayer chemisorption and spontaneous endothermic. In addition, the XPS and FT-IR results indicate that the interaction between Cd(II) and functional groups is related to O or N atoms on Cd(II)-IIP. In summary, Cd(II)-IIP has certain advantages and considerable development prospects for the treatment of wastewater containing Cd(II).

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“…The main sources of Cd(II) contamination are mining, metal plating, electroplating, and chemical industries [ 70 ]. Different materials with improved performance have been prepared in recent years by the ion-imprinting technique for Cd(II) detection [ 71 , 72 ] and adsorption [ 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 ] from wastewaters ( Table 3 ).…”

Section: Ion-imprinted Polymeric Materials For Selective Extraction O...mentioning

confidence: 99%

“…Bio-based Cd(II)-imprinted CS beads with a maximum sorption capacity of 123.65 mg Cd(II)/g (at pH 7, 0.65 mg/L sorbent dose and 48 h contact time) were recently prepared by Babakhani et al, by ionotropic cross-linking with TPP [ 73 ]. Compared with the non-imprinted CS beads, a 21 ± 5% sorption capacity enhancement was determined for the Cd(II)-imprinted ones because of the specific recognition sites for Cd(II).…”

Section: Ion-imprinted Polymeric Materials For Selective Extraction O...mentioning

confidence: 99%

Ion-Imprinted Polymeric Materials for Selective Adsorption of Heavy Metal Ions from Aqueous Solution

Lazăr¹,

Ghiorghiță²,

Drăgan³

et al. 2023

Molecules

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The introduction of selective recognition sites toward certain heavy metal ions (HMIs) is a great challenge, which has a major role when the separation of species with similar physicochemical features is considered. In this context, ion-imprinted polymers (IIPs) developed based on the principle of molecular imprinting methodology, have emerged as an innovative solution. Recent advances in IIPs have shown that they exhibit higher selectivity coefficients than non-imprinted ones, which could support a large range of environmental applications starting from extraction and monitoring of HMIs to their detection and quantification. This review will emphasize the application of IIPs for selective removal of transition metal ions (including HMIs, precious metal ions, radionuclides, and rare earth metal ions) from aqueous solution by critically analyzing the most relevant literature studies from the last decade. In the first part of this review, the chemical components of IIPs, the main ion-imprinting technologies as well as the characterization methods used to evaluate the binding properties are briefly presented. In the second part, synthesis parameters, adsorption performance, and a descriptive analysis of solid phase extraction of heavy metal ions by various IIPs are provided.

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Synthesis, characterization, and performance evaluation of ion-imprinted crosslinked chitosan (with sodium tripolyphosphate) for cadmium biosorption

Cited by 38 publications

References 111 publications

Evaluating the Efficiency of Chitosan‐Graphene Oxide Hybrid Hydrogels as Drug Delivery Systems

Evaluating the Efficiency of Chitosan‐Graphene Oxide Hybrid Hydrogels as Drug Delivery Systems

Preparation and Characterization of Cadmium(II)-Ion-Imprinted Composites Based on Epoxy Resin

Ion-Imprinted Polymeric Materials for Selective Adsorption of Heavy Metal Ions from Aqueous Solution

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