Self-assembly of binary oppositely charged polysaccharides into polyelectrolyte complex hydrogel film for facile and efficient Pb2+ removal

Hu, Xinyu; Yan, Linlin; Wang, Yongmei; Xu, Man

doi:10.1016/j.cej.2020.124189

Cited by 51 publications

(26 citation statements)

References 75 publications

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“…Hydrogels have several unique and beneficial characteristics, including a high swelling degree and adsorption capacity. However, they need to be mechanically robust and reusable to make them a feasible technology [20,24,25]. This can be achieved by architecting nanocomposites that incorporate highperformance polymers and advanced materials (Fig.…”

Section: Introductionmentioning

confidence: 99%

Architecting neonicotinoid-scavenging nanocomposite hydrogels for environmental remediation

Alammar

Park

Ibrahim

et al. 2020

Applied Materials Today

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Section: Introductionmentioning

confidence: 99%

Architecting neonicotinoid-scavenging nanocomposite hydrogels for environmental remediation

Alammar

Park

Ibrahim

et al. 2020

Applied Materials Today

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“…Composite gels based on polyelectrolytes represent a class of composite soft materials consisting of hydrophilic charged/uncharged chains that absorb a high content of water (>95%) [133]. These low cost and high efficient 3D-dimensional networks are based on polyelectrolytes of different types: (i) synthetic, such as: PEI [36,92], PAH [93,118], PAA [38], PAMPS [106,118,119], or (ii) natural, like the following: CS [30,[32][33][34]38,39], modified CS [37,84,85], SA [33,70,73], modified SA [72], modified cellulose [104]. Many studies reported the incorporation of organic/inorganic entities into the gel structure, including GO [70,73], Fe 3 O 4 [36,106], SiO 2 [113], zeolites [30,32], clays [72].…”

Section: Composite Gels (Hydrogels Monolith Cryogels Sponges)mentioning

confidence: 99%

An Overview on Composite Sorbents Based on Polyelectrolytes Used in Advanced Wastewater Treatment

et al. 2021

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Advanced wastewater treatment processes are required to implement wastewater reuse in agriculture or industry, the efficient removal of targeted priority and emerging organic & inorganic pollutants being compulsory (due to their eco-toxicological and human health effects, bio-accumulative, and degradation characteristics). Various processes such as membrane separations, adsorption, advanced oxidation, filtration, disinfection may be used in combination with one or more conventional treatment stages, but technical and environmental criteria are important to assess their application. Natural and synthetic polyelectrolytes combined with some inorganic materials or other organic or inorganic polymers create new materials (composites) that are currently used in sorption of toxic pollutants. The recent developments on the synthesis and characterization of composites based on polyelectrolytes, divided according to their macroscopic shape—beads, core-shell, gels, nanofibers, membranes—are discussed, and a correlation of their actual structure and properties with the adsorption mechanisms and removal efficiencies of various pollutants in aqueous media (priority and emerging pollutants or other model pollutants) are presented.

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“…CDs not only show excellent performance in the detection of heavy metal ions but are also popular in the preparation of materials for heavy metal ion removal. − Hydrogels stand out among many materials that settle heavy metal ions due to their rich porous three-dimensional nanostructure and polar functional groups. ,,− The chitosan-based hydrogel prepared by incorporating TEMPO-oxidized cellulose nanofiber CDs and titanate nanofibers shows larger adsorption capacity for Cr(VI) ion (228.2 mg/g) and a lower detection limit (8.5 mg/L) compared with samples without CDs . Neelam et al, developed a hybrid solid sensing platform for detection of heavy metal ions.…”

Section: Introductionmentioning

confidence: 99%

Metal-Ion-Cross-Linked Nitrogen-Doped Carbon Dot Hydrogels for Dual-Spectral Detection and Extractable Removal of Divalent Heavy Metal Ions

Yang

et al. 2021

ACS Appl. Nano Mater.

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Nitrogen-doped carbon dots (NCDs) synthesized by the low-temperature sintering method show electronegativity rich in −COO–, −CO–NH–, −NH–, and −OH. The structure, morphology, and fluorescence performance of NCDs were successively characterized by Fourier-transform, infrared, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, photoluminescence, ultraviolet (UV), and X-ray fluorescence analyses. On the one hand, NCDs can sensitively detect Pb2+ in water with a detection limit of 3 ppb through the dual response of fluorescence emission spectra and UV absorbance spectra. On the other hand, the negatively charged NCDs combine with various positively charged heavy metal ions (Pb2+, Cu2+, Ni2+, Co2+, and Cd2+) through charge attraction and coordination to form a hydrogel, thereby removing heavy metal ions from the water. Among them, the removal rate of Pb2+ by NCDs is as high as 94.8%. It is the first time that pure NCDs have been used to remove heavy metal ions quickly and easily in the form of a reversible hydrogel. A simple way is to achieve ultrasensitive detection and high-efficiency removal of heavy metal ions in water with unitary NCDs.

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Self-assembly of binary oppositely charged polysaccharides into polyelectrolyte complex hydrogel film for facile and efficient Pb2+ removal

Cited by 51 publications

References 75 publications

Architecting neonicotinoid-scavenging nanocomposite hydrogels for environmental remediation

Architecting neonicotinoid-scavenging nanocomposite hydrogels for environmental remediation

An Overview on Composite Sorbents Based on Polyelectrolytes Used in Advanced Wastewater Treatment

Metal-Ion-Cross-Linked Nitrogen-Doped Carbon Dot Hydrogels for Dual-Spectral Detection and Extractable Removal of Divalent Heavy Metal Ions

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