Adsorption of perfluoroalkyl acids on granular activated carbon supported chitosan: Role of nanobubbles

Liu, Wei; Lin, Tao; Zhang, Xue; Jiang, Fuchun; Yan, Xiaoshu; Chen, Han

doi:10.1016/j.chemosphere.2022.136733

Cited by 16 publications

(7 citation statements)

References 61 publications

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“…CMC, β‐GP and HA molecules were modeled and simulated using the Amorphous Cell and DMol3 modules in Material Studio 2020 software to analyze their interactions, and the electrostatic potential was analyzed by electrical density and electrostatics. [ 54 ] This was also preceded by the optimization of the molecular geometry using the Forcite module to obtain the most stable conformation.…”

Section: Methodsmentioning

confidence: 99%

Transdermal Sustained Release Properties and Anti‐Photoaging Efficacy of Liposome‐Thermosensitive Hydrogel System

Wu,

Liu,

Shao

et al. 2023

Adv Healthcare Materials

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Drug delivery systems have become a research priority in the biomedical field. The incorporation of liposomes to hydrogels further forms more robust multifunctional systems for more effective and sustained topical drug delivery. In this study, carboxymethyl‐modified chitosan/hyaluronic acid (CMC/HA, CMH) thermosensitive hydrogel is developed for sustained transdermal delivery of liposomes. Hydrogels are crosslinked by hydrogen bonding, hydrophobic interaction and electrostatic interaction. The gel properties can be regulated by substitution degree (DS), and when DS = 18.20 ± 0.67% (CMH2), the gel temperature is 37.8 °C, allowing rapid gelation at body temperature (315 s). Moreover, CMH2 hydrogel has suitable spreadability (17.7–57.2 cm2), viscosity (2133.4 mPa s) and porous structure, which facilitated its adhesion and application on the skin and liposomes delivery. The hydrogel can retard the liposomes release, and the release rate of ascorbyl glucoside (AA2G) is 33.92–49.35% in 24 h. Hydrogel avoids the rapid clearance of liposomes from the skin and improved the skin retention, achieving the long‐term release of bioactive components. Liposome‐hydrogel system more efficiently promotes the anti‐photoaging effect of AA2G on skin, reducing epidermal thickness, melanin deposition and lipid oxidative damage and increasing collagen density. Therefore, liposome‐hydrogel systems are proposed as multifunctional delivery systems for sustained transdermal delivery.

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Section: Methodsmentioning

confidence: 99%

Transdermal Sustained Release Properties and Anti‐Photoaging Efficacy of Liposome‐Thermosensitive Hydrogel System

Wu,

Liu,

Shao

et al. 2023

Adv Healthcare Materials

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“…Chitosan is another naturally occurring material that has shown effectiveness in removing PFASs from aqueous environments. Liu et al [ 63 ] employed DFT methods to calculate adsorption energies between various PFASs and chitosan. The adsorption configurations were also optimized and calculated using electrostatic potential maps.…”

Section: Adsorbents and Morphologymentioning

confidence: 99%

“…Also, even though adsorption energies increased as the length of the CF chains increased, these energies reached a limit. As the CF chains move closer to the chitosan surface, they interfere with other potential electrostatic binding sites and impact the overall adsorption process [ 63 ].…”

Section: Adsorbents and Morphologymentioning

confidence: 99%

“… Electrostatic potential maps of ( a ) chitosan, ( b ) chitosan with perfluoropentanoic acid (PFPeA), ( c ) chitosan with perfluorohexanoic acid (PFHxA), ( d ) chitosan with perfluoroheptanoic acid (PFHpA), ( e ) chitosan with perfluorooctanoic acid (PFOA), ( f ) chitosan with perfluorononanoic acid (PFNA), and ( g ) chitosan with PFDA. Reprinted from Liu et al [ 63 ], with permission from Elsevier. …”

Section: Figurementioning

confidence: 99%

“…surface, they interfere with other potential electrostatic binding sites and impact the overall adsorption process [63].…”

Section: Micellesmentioning

confidence: 99%

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Review of Recent Computational Research on the Adsorption of PFASs with a Variety of Substrates

Minervino,

Belfield

2024

IJMS

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The widespread use and impervious nature of per- and polyfluorinated alkyl substances (PFASs) is leading to potentially harmful exposure in numerous environments. One avenue to explore remediation of PFAS-contaminated environments involves investigating how well PFASs adsorb onto various substrates. In the current review, we focus on summarizing recent computational research, largely involving density functional theory (DFT) and molecular dynamics (MD), into the adsorption and interaction of PFASs with a variety of substrates with an aim to provide insight and inspire further research that may lead to solutions to this critical problem that impacts the environment and human health.

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Modification of activated carbon for enhanced treatment of per‐ and polyfluoroalkyl substances: A focused review

Okorie,

Ojeyemi,

Egbemhenghe

et al. 2024

Remediation Journal

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In response to the growing concern over the contamination of water sources by per‐ and polyfluoroalkyl substances (PFAS), the use of activated carbon (AC) for PFAS removal has garnered significant attention. However, the efficient removal of PFAS with conventional AC poses challenges due to the limited surface area and delayed absorption kinetics. This focused review provides a concise overview of the latest advancements in the modification of AC, a promising strategy for enhancing PFAS adsorption. Chemical and physical modifications, including the deposition of metal/metal oxide nanoparticles, polymer‐based coatings, surfactants, and advanced oxidation processes, were explored, offering insights into their mechanisms and effectiveness. The thorough analysis of these modified AC materials provides a valuable resource for developing efficient and sustainable strategies to address the pressing issue of PFAS contamination in water sources.

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Adsorption of perfluoroalkyl acids on granular activated carbon supported chitosan: Role of nanobubbles

Cited by 16 publications

References 61 publications

Transdermal Sustained Release Properties and Anti‐Photoaging Efficacy of Liposome‐Thermosensitive Hydrogel System

Transdermal Sustained Release Properties and Anti‐Photoaging Efficacy of Liposome‐Thermosensitive Hydrogel System

Review of Recent Computational Research on the Adsorption of PFASs with a Variety of Substrates

Modification of activated carbon for enhanced treatment of per‐ and polyfluoroalkyl substances: A focused review

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