Adsorption of polymers onto iron oxides: Equilibrium isotherms

Veloso, C.H.; Filippov, L.O.; Filippova, I.V.; Ouvrard, Stéphanie; Araújo, Armando Corrêa de

doi:10.1016/j.jmrt.2019.11.018

Cited by 56 publications

(30 citation statements)

References 48 publications

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“…Little has been reported on a spontaneous adsorption of carbohydrates on IONPs. Hydrogen bonding is the primary adsorption mechanism of polysaccharides with a weak bond, but an interplay of interactions is commonly reported [ 22 ]. For instance, the high affinity of starch to iron oxide is initially due to the hydrogen bonding, but with time it leads to the formation of chemical complexes [ 22 ].…”

Section: Ionps As Adsorbents Of Biomoleculesmentioning

confidence: 99%

“…As previously discussed, the crystalline structure affects the arrangement of Fe 2+ and Fe 3+ ions, hence the position of hydroxyl groups in aqueous medium [ 79 ]. Veloso et al (2020) report that around 20% more starch is adsorbed on hematite than on magnetite [ 22 ].…”

Section: Ionps As Adsorbents Of Biomoleculesmentioning

confidence: 99%

“…Starch is composed of D-glucose units joined by glycosidic bonds [ 79 ], while dextrin is produced by hydrolysis of starch and, consequently, contains a lower molecular weight. This length influences the number of hydroxyl groups available for the interaction, and hence dextrin shows a lower adsorption capacity [ 22 ].…”

Section: Ionps As Adsorbents Of Biomoleculesmentioning

confidence: 99%

“…In contrast to proteins, the adsorption isotherm of polysaccharides is usually fitted to the Freundlich model [ 22 , 23 ]. In starch-based wastewater, IONPs were used to study the adsorption behavior of polysaccharides, comparing three adsorption isotherms (Langmuir, Freundlich and Sips) [ 23 ].…”

Section: Ionps As Adsorbents Of Biomoleculesmentioning

confidence: 99%

“…Iron oxide magnetic nanoparticles (IONPs) have mainly been gaining attention in the last two decades as they are inexpensive adsorbent materials [ 5 ] which allow harvesting whole cell systems [ 6 , 7 ], and retention of different biological molecules, including proteins [ 8 – 13 ], nucleic acids [ 14 – 19 ], lipids [ 20 , 21 ] and polysaccharides [ 22 , 23 ]. While the global nanomedical market is expected to reach close to US$300 billion by 2022 [ 24 ], the global market for magnetic particle fluids could attain US$5.5 billion by 2024 [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

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Bio-nano interactions: binding proteins, polysaccharides, lipids and nucleic acids onto magnetic nanoparticles

2021

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The major interest in nanoparticles as an application platform for biotechnology arises from their high surface-to-volume ratio. Iron oxide nanoparticles (IONPs) are particularly appealing due to their superparamagnetic behavior, which enables bioseparation using external magnetic fields. In order to design advanced biomaterials, improve binding capacities and develop innovative processing solutions, a thorough understanding of the factors governing organic-inorganic binding in solution is critical but has not yet been achieved, given the wide variety of chemical and physical influences. This paper offers a critical review of experimental studies of the interactions between low cost IONPs (bare iron oxides, silica-coated or easily-functionalized surfaces) and the main groups of biomolecules: proteins, lipids, nucleic acids and carbohydrates. Special attention is devoted to the driving forces and interdependencies responsible of interactions at the solid-liquid interface, to the unique structural characteristics of each biomolecular class, and to environmental conditions influencing adsorption. Furthermore, studies focusing on mixtures, which are still rare, but absolutely necessary to understand the biocorona, are also included. This review concludes with a discussion of future work needed to fill the gaps in knowledge of bio-nano interactions, seeking to improve nanoparticles’ targeting capabilities in complex systems, and to open the door for multipurpose recognition and bioseparation processes.

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Section: Ionps As Adsorbents Of Biomoleculesmentioning

confidence: 99%

Section: Ionps As Adsorbents Of Biomoleculesmentioning

confidence: 99%

Section: Ionps As Adsorbents Of Biomoleculesmentioning

confidence: 99%

Section: Ionps As Adsorbents Of Biomoleculesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Bio-nano interactions: binding proteins, polysaccharides, lipids and nucleic acids onto magnetic nanoparticles

2021

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Single‐Step Synthesis of Sub‐10 nm Magnetic Nanoparticles with High Saturation Magnetization and Broad pH Stability

Pustovalov,

Landers,

Hertle

et al. 2024

Adv Eng Mater

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Iron oxide nanoparticles hold great potential for future biomedical applications but, to date, usually suffer from reduced magnetic properties compared to their bulk counterparts. The replacement of Fe(III) ions with Zn(II) ions can enhance their magnetic properties while keeping their biocompatibility characteristics. Yet, common synthesis methods for these highly magnetic particles require using environmentally harmful solvents, multiple steps, and postfunctionalization, all while being affected by poor scalability and high polydispersity. To address these challenges, in this study, a single‐step coprecipitation‐based method is developed to fabricate gelatin‐coated, zinc‐substituted, sub‐10 nm‐sized iron oxide nanoparticles exhibiting high saturation magnetization. This single‐step synthesis benefits from simplicity and robustness, capable of yielding large amounts of highly magnetic nanoparticles without the utilization of environmentally harmful or highly toxic reagents. Furthermore, in situ gelatin coating during the synthesis ensures particle stability in aqueous solutions over a wide range of pH and enhances cell compatibility. Systematic investigations show a direct correlation between the particles’ magnetization and the concentrations of Zn(II) and NaOH, where particles with a zinc‐to‐iron ratio of Zn:Fe = 0.18:2.82 reach a maximum saturation magnetization of 91.2 emu g−1. Thus, these particles are promising candidates for biomedical applications.

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Biocorona on Iron Oxide Nanoparticles in a Complex Biotechnological Environment: Analysis of Proteins, Lipids, and Carbohydrates

Abarca-Cabrera,

Milinovic,

Heitler

et al. 2023

Small Science

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Upon their introduction into a biological environment, nanoparticles are spontaneously covered by a variety of biomolecules, forming a (multi)layer called the “biocorona”. However, the interaction of small and large molecules with nanosized materials is not fully understood and in complex aqueous systems, even less, limiting their exploitation. The objective is to gain insights into the mass partitioning between the solid and the liquid phases for the most abundant groups of biological molecules in a biotechnological milieu. Herein, the biocorona composition is analyzed after the exposure of bare iron oxide nanoparticles to Microchloropsis salina lysates to evaluate the influence of the environment's pH, temperature, and ionic strength on the adsorption of proteins, lipids, and carbohydrates. Maximum adsorption capacities reach at pH 4.0 and yield 0.47, 0.08, and 0.11 g g−1 for proteins, fatty acids, and carbohydrates, respectively. The increase in ionic strength and temperature of the environment promotes protein adsorption, the decrease in temperature raises fatty acid adsorption, and acidic pHs foster the adsorption of the three types of biomolecules. Abundance of the biomolecules plays a key role in the biocorona content. This approach should lead to further studies on complex systems to modulate the adsorption at the bio–nano interface.

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Adsorption of polymers onto iron oxides: Equilibrium isotherms

Cited by 56 publications

References 48 publications

Bio-nano interactions: binding proteins, polysaccharides, lipids and nucleic acids onto magnetic nanoparticles

Bio-nano interactions: binding proteins, polysaccharides, lipids and nucleic acids onto magnetic nanoparticles

Single‐Step Synthesis of Sub‐10 nm Magnetic Nanoparticles with High Saturation Magnetization and Broad pH Stability

Biocorona on Iron Oxide Nanoparticles in a Complex Biotechnological Environment: Analysis of Proteins, Lipids, and Carbohydrates

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