A bioinspired strategy towards super-adsorbent hydrogel spheres <i>via</i> self-sacrificing micro-reactors for robust wastewater remediation

Song, Xin; An, Jiangle; He, Chao; Zhou, Jukai; Xu, Yuanting; Ji, Haifeng; Yang, Li; Yin, Jiarui; Zhao, Weifeng; Zhao, Changsheng

doi:10.1039/c9ta05550a

Cited by 50 publications

(29 citation statements)

References 82 publications

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“…Powder-like adsorbents have practical limitations in their handling and require complex processes to achieve efficient recovery from water. Spherical-shape hydrogels made from polysaccharide-based materials such as cellulose, chitosan, and sodium alginate fabricated via a simple phase-separation technique have been proposed as a convenient and practical solution [21]. In this work, we have chosen cellulose acetate as the polymer matrix to develop practical core-shell hydrogel spheres using the phase-separation technique.…”

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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“…As a soft material, gels have been permeated our daily life in various aspects such as skin care products, wound dressing, [1] contact lenses, sewage treatment. [2] Hydrogels formed by low molecular weight gelators (LMWGs) have attracted much attention in the field of materials science due to their fascinating solid-like properties [3][4][5] and potential application in biomedicine, [6][7][8] biomimetic materials, [9,10] biosensors, [11] and analytical fields. [12][13][14] Hydrogels are formed by the self-assembly of LMWG molecules through the balance of non-covalent interactions, including hydrogen bonding, π-π stacking, hydrophobic greatly limited the scope of their practical application.…”

Section: Introductionmentioning

confidence: 99%

Fluorescent Hydrogel Producing ZnO for Colorimetric Detection of Glutathione and Cysteine

Kang

Tang

Gao

et al. 2021

Adv Materials Inter

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The dynamic and reversible feature of non-covalent interactions endows hydrogel specific response to external stimuli such as temperature, light, pH and oxidant, along with the macroscopic gel-sol transition. [3,[18][19][20] The properties of hydrogels can provide theoretical guidance for their application. However, hydrogels is composed of a large amounts of water and network structure. Since the presence of plenty of water, the hydrogels always have poor mechanical properties, including mechanical strength and viscoelasticity, which greatly influence the application range and the deep insight on the structure-property relationship of hydrogels. Thus, it is very urgent to design LMWGs with functional groups to develop hydrogels with prominent mechanical strength and stability for functional applications. [21][22][23][24] Among the 20 amino acids used as building blocks for proteins, the thiolcontaining amino acids, acting as antioxidants and antidotes, participate in biological activities and metabolic processes, which can retain the cellular defense against xenobiotics, gene regulation, and free radicals signal transduction. [25,26] As the only thiol-containing amino acids, cysteine (Cys) contributes biologically in human body by providing a mode for intermolecular cross-linking of proteins using the disulfide bonding to support the secondary structures and functions. [27] The quantification of Cys is important for accurate prediagnosis of its related disease such as cancer, cardiovascular and cerebrovascular disease. [28] Glutathione (GSH), a thiol-containing tripeptide (l-glutamic acid, l-cysteine, and glycine), is extensively distributed in mammalian and eukaryotic cells. [29] In the tissues, the tripeptide has two forms: reduced (GSH) and oxidized form (GSSH), which maintain the intracellular reduction-oxidation potential. [30] The intracellular level of GSH is a biomarker for various medical conditions and a disease-related physiological regulator. [31] Therefore, it is significant to detect and monitor the Cys and GSH concentration in biological samples as well as cells. Many approaches have been developed for detecting Cys and GSH, such as chromatography, spectroscopy, electrochemistry, and mass spectrometry. However, most of them required sophisticated instrumentation and tedious pretreatment, which Supramolecular hydrogels, based on non-covalent interaction, have outstanding properties, but it is still a big challenge to design hydrogels with higher mechanical properties. In this study, hydrogels with adjustable mechanical properties are prepared by mixing 4′-(4-n-butylimidazole)-pbenzyl-2,2′:6′2″-terpyridine (C 4 -Ter) and zinc ions (Zn 2+ ) in water. The hydrogels are composed of fibrous structure and hierarchical porous structure, which depends on Zn 2+ concentration. Rheological results demonstrate that the hydrogels exhibit prominent mechanical strength with the elastic modulus (G″) and yield stress (τ*) of 200 000 and 1000 Pa, respectively. X-ray diffraction and Fourier-transform infrared spectro...

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Section: Introductionmentioning

confidence: 99%

“…In this context, to decrease the risk of environmental pollution, dyes need to be removed from wastewater before it is discharged into the environment. Numerous physicochemical techniques have been applied to remove dye-containing wastewater, such as impaction, precipitation, interception, solicitation, adhesion, physical and chemical adsorption, biological growth, flocculation and pressure-driven membrane separation methods (Chinoune et al, 2016;Bayat et al, 2018;Beluci et al, 2019;Duo et al, 2019;Song et al, 2019;Feng et al, 2020;Zheng et al, 2020). Among these techniques, the pressure-driven membrane technique has been proposed as an alternative process for the separation of textile wastewater because of its advantages, such as reduced energy consumption, low space requirements, low cost, high efficiency and environmental friendliness (Balta et al, 2016;Unuigbe et al, 2019;Wang et al, 2019;Khan Mohammadi et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Efficient soluble anionic dye removal and antimicrobial properties of ZnO embedded‐ Polyphenylsulfone membrane

Shukla

Alam

Ali

et al. 2020

Water & Environment J

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As a result of the involvement of pollutants in water, there is the need to develop a facile and effective membrane technology that can not only treat dyes, but also kill bacteria in wastewater. In this work, a facile strategy is proposed for the preparation of a nanostructured hybrid membrane based on Polyphenylsulfone containing different ZnO nanoparticle contents. The results confirm that ZnO nanoparticle plays a key role in achieving the efficient removal of soluble anionic dyes from aqueous solution. The optimal membrane exhibits excellent dye rejection approximately 98% with impeccable water flux 19 L/m2h; and exhibits antifouling properties, presenting dye‐fouled flux recovery ratio> 90%. Moreover, an investigation of antibacterial properties of the material showed that the nanostructured hybrid membrane has good antibacterial properties (nearly 6.2 and 6.8) against both Escherichia coli and Staphylococcus aureus. Therefore, the proposed nanostructured hybrid membrane may provide an efficient for treating dye and bacteria in wastewater.

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A bioinspired strategy towards super-adsorbent hydrogel spheres via self-sacrificing micro-reactors for robust wastewater remediation

Abstract: A bioinspired strategy via self-sacrificing micro-reactors is proposed to prepare hydrogel spheres with ultrahigh adsorption capability within 150 seconds.

Cited by 50 publications

References 82 publications

Architecting neonicotinoid-scavenging nanocomposite hydrogels for environmental remediation

Architecting neonicotinoid-scavenging nanocomposite hydrogels for environmental remediation

Fluorescent Hydrogel Producing ZnO for Colorimetric Detection of Glutathione and Cysteine

Efficient soluble anionic dye removal and antimicrobial properties of ZnO embedded‐ Polyphenylsulfone membrane

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