3D-printed montmorillonite nanosheets based hydrogel with biocompatible polymers as excellent adsorbent for Pb(Ⅱ) removal

Miao, Yiheng; Peng, Weijun; Wang, Wei; Cao, Yijun; Li, Huiyong; Chang, Luping; Huang, Yukun; Fan, Guixia; Yi, Hao; Zhao, Yuliang; Zhang, Tingting

doi:10.1016/j.seppur.2021.120176

Cited by 45 publications

(11 citation statements)

References 59 publications

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“…3D printing technology can improve the designs of 3D materials with improved mechanical strength, adsorption capacity, and selectivity. [45] Recently Zhang et al [46] introduced 3D-printed hydrogels using montmorillonite nanosheets (MMTNs), gelatin (GEL), and sodium alginate (SA), and employed them as adsorbents for the removal of Pb(II) from wastewater. The GEL was bonded to the MMTNs by hydrogen bonding between the * OH and NH 3…”

Section: Adsorbentsmentioning

confidence: 99%

Section: Adsorbentsmentioning

confidence: 99%

“…Figure 4. (a) FT-IR spectra of 3D-printed hydrogels before and after Pb(II) adsorption, and (b-d) Pb(II), O, and N XPS spectra of 3D-printed hydrogels before and after Pb(II) adsorption.Reproduced with permission from [46]. Copyright 2022, Elsevier Science Ltd.…”

mentioning

confidence: 99%

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3D‐Printed Hydrogels and Aerogels for Water Treatment and Energy Storage Applications

2023

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Recently, three‐dimensional (3D) printing has become a research focus point and has evolved as a powerful tool for manufacturing complex objects for advanced technology platform designs. Herein, we review the current state‐of‐the‐art 3D‐printed hydrogels and aerogels for wastewater treatment and energy storage applications. Several 3D printing methods such as direct ink writing, digital light processing, and fused filament fabrication have been discussed. Among these, direct ink writing is the most employed 3D printing technique for hydrogels and aerogels. We systematically investigated the most important results of several 3D‐printed hydrogels and aerogels for adsorption, photocatalysis, membrane filtration, and desalination for wastewater treatment, supercapacitors, and batteries in energy storage applications. Finally, we conclude our understanding with the prospect of future opportunities in this field using 3D‐printed hydrogels and aerogels for wastewater treatment and energy storage applications. In summary, the fundamental knowledge of 3D printing and critical assessment of the key literature on 3D‐printed hydrogels and aerogels and their applications in water treatment and energy storage will provide guidance for future studies in smart materials and waste management aspects of sustainability.

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Section: Adsorbentsmentioning

confidence: 99%

Section: Adsorbentsmentioning

confidence: 99%

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3D‐Printed Hydrogels and Aerogels for Water Treatment and Energy Storage Applications

2023

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“…The pseudo-first-order model and the pseudo-second-order model are applied to explore the adsorption kinetic behavior and provide a basis for the adsorption mechanism [30] . For the pseudo-first-order model [31] For the pseudo-second-order model [32] where q e and q t are the abilities of the material adsorbing antibiotics at equilibrium and at time t (min).…”

Section: Adsorption Kineticsmentioning

confidence: 99%

“…Adsorption isotherms are used to describe the relationship between adsorption capacity and adsorption equilibrium concentration [30] . Langmuir model and Freundlich model are commonly adsorption isotherm models, which are represented as follows.…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Differential removal of tetracycline hydrochloride and quinolone antibiotics by calcined and uncalcined layered double hydroxides

Zhang¹,

García‐Meza²,

Li³

2023

Miner Miner Mater

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Antibiotics generally cause drug-resistant genes (ARGs) and drug-resistant bacteria (ARBs). With a complex class of antibiotics, it is very crucial to select specific adsorbents for different kinds of antibiotics. Zn-Al layered double hydroxide (LDH) and calcined layered double hydroxide (LDO) were prepared as absorbents for tetracycline hydrochloride (TCH) and ofloxacin (OFX), which were two antibiotics with different structures. According to the results of the adsorption experiments, LDO has the best adsorption capacity on TCH, reaching 322.58 mg/g. Acid-base titration, XRD, TEM, SEM, BET, and FI-TR analyses indicate that LDO has more active sites on the surface, the “memory effect”, and a larger specific surface area. In contrast, the removal rate of OFX by LDO is low because OFX has a more stable quinolone ring structure. Furthermore, after five adsorption-desorption cycles, the adsorption rate of TCH remains at 94.9%, demonstrating that LDO has good cyclic adsorption capacity for TCH. This study creatively combines acid-base buffering characteristics to study the mechanism of the adsorption of antibiotics by hydrotalcite, and proposes that LDO can be used as a special adsorbent for TCH.

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Efficient PFAS Removal Using Reusable and Non‐Toxic 3D Printed Porous Trianglamine Hydrogels

Chaix,

Gomri,

Benkhaled

et al. 2024

Advanced Materials

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Per‐ and polyfluoroalkyl substances (PFAS) are now a paramount concern in water remediation. Nowadays, urgent action is required for the development of advanced technologies aimed at capturing PFAS and mitigating their impact. To offer a solution, a functional 3D printed hydrogel tailored is designed to trap a broad spectrum of PFAS contaminants. The hydrogel is made of a photo‐crosslinked dimethacrylate‐ureido‐trianglamine (DMU‐Δ) and Pluronic P123 dimethacrylate (PDM) fabricated by stereolithography (SLA). With the aid of 3D‐printing, porous and nonporous hydrogels (3D‐PSHΔ, 3D‐SHΔ) as well as quaternized hydrogels (3D‐PSHΔQ+) are prepared. These tailored hydrogels, show high uptake capacities and fast removal kinetics for PFAS from aqueous sources. The PFAS removal efficiency of these hydrogels are then compared to P123 hydrogels with no trianglamine (3D‐SH). The 3D‐SH hydrogel shows no affinity to PFAS, proving that the sorption is due to the interaction between the trianglamine (Δ) and PFAS. Metadynamic simulations also confirmed this interaction. The porous matrices showed the fastest and highest uptake capacity. 3D‐PSHΔ is able to capture ≈ 91% of PFAS within 5 h using initial concentrations of 5 and 0.5 ppm in both deionized and river water. The sorption of PFAS is further enhanced by introducing permanent positive charges to the structure of the porous hydrogels, resulting in even faster sorption kinetics for both long and short PFAS chains with diverse polar heads. Besides the remarkable efficiency in capturing PFAS, these designed hydrogels are non‐toxic and have outstanding chemical and thermal stability, making them a brilliant candidate for mass use in the combat against PFAS pollution.

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3D-printed montmorillonite nanosheets based hydrogel with biocompatible polymers as excellent adsorbent for Pb(Ⅱ) removal

Cited by 45 publications

References 59 publications

3D‐Printed Hydrogels and Aerogels for Water Treatment and Energy Storage Applications

3D‐Printed Hydrogels and Aerogels for Water Treatment and Energy Storage Applications

Differential removal of tetracycline hydrochloride and quinolone antibiotics by calcined and uncalcined layered double hydroxides

Efficient PFAS Removal Using Reusable and Non‐Toxic 3D Printed Porous Trianglamine Hydrogels

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