Recent developments in stimuli responsive nanomaterials and their bionanotechnology applications

Shah, Rishabh A.; Frazar, E. Molly; Hilt, J. Zach

doi:10.1016/j.coche.2020.08.007

Cited by 12 publications

(4 citation statements)

References 48 publications

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“…Magnetic nanoparticles are a kind of nanomaterials. It is widely used in the fields of biology, medicine, and chemical engineering [9][10][11][12][13], on account of its unique nano-size effect and magnetic properties. For example, Chen et al [14] proposed Ti 2 O 3 nanoparticles as a pure Ti 3+ system for the electrosynthesis of NH 3 and the yield of NH 3 was significantly better than other titanium-based adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of α-Fe₂O₃/Fe₃O₄ heteroplasmon nanoparticles via the hydrolysis-combustion-calcination process of iron nitrate

Liu

Zhang

Wang

et al. 2022

Mater. Res. Express

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In this work, a feasible and facile hydrolysis-combustion-calcination process of ferric nitrate for the preparation of magnetic α-Fe2O3/Fe3O4 heteroplasmon nanoparticles was represented. The influences of hydrolysis time, hydrolysis temperature, Fe3+ concentration, anhydrous ethanol volume, calcination time, and calcination temperature on the properties of α-Fe2O3/Fe3O4 heteroplasmon nanoparticles were investigated. According to a series of characterization analysis, the optimal preparation conditions were confirmed: 0.05 M Fe(NO3)3·9H2O was hydrolyzed at 90 ℃ for 8 h, and then the precursor was calcined at 200 ℃ for 2 h with 20 mL anhydrous ethanol. While, the morphology of α-Fe2O3/Fe3O4 heteroplasmon were spherical structures with the average particle size of about 46 nm, and their saturation magnetization was 54 emu g-1. The α-Fe2O3/Fe3O4 heteroplasmon nanoparticles possessed controllable magnetic properties and a more stable state, which suggested promising applications.

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of α-Fe₂O₃/Fe₃O₄ heteroplasmon nanoparticles via the hydrolysis-combustion-calcination process of iron nitrate

Liu

Zhang

Wang

et al. 2022

Mater. Res. Express

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“…Temperature responsive polymers which exhibit a phase change at their critical solution temperature (attributed to disruption of intra-and intermolecular interactions), causing the polymer to either expand or collapse within the aqueous solvent resulting in sorption/desorption of the target contaminant, are some of the most extensively studied responsive systems. [48,[50][51][52][53][54][55][56] This section highlights some of the most recent and interesting efforts to successfully demonstrate the applicability of hydrogels and hydrogel nanocomposites for environmental remediation applications (Table 1).…”

Section: Treating the Environment To Prevent Human Exposure To Enviro...mentioning

confidence: 99%

Hydrogels and Hydrogel Nanocomposites: Enhancing Healthcare through Human and Environmental Treatment

Gutiérrez

Frazar

Klaus

et al. 2021

Adv Healthcare Materials

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Humans are constantly exposed to exogenous chemicals throughout their life, which can lead to a multitude of negative health impacts. Advanced materials can play a key role in preventing or mitigating these impacts through a wide variety of applications. The tunable properties of hydrogels and hydrogel nanocomposites (e.g., swelling behavior, biocompatibility, stimuli responsiveness, functionality, etc.) have deemed them ideal platforms for removal of environmental contaminants, detoxification, and reduction of body burden from exogenous chemical exposures for prevention of disease initiation, and advanced treatment of chronic diseases, including cancer, diabetes, and cardiovascular disease. In this review, three main junctures where the use of hydrogel and hydrogel nanocomposite materials can intervene to positively impact human health are highlighted: 1) preventing exposures to environmental contaminants, 2) prophylactic treatments to prevent chronic disease initiation, and 3) treating chronic diseases after they have developed.

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“…This phenomenon has been attributed to hydrogen bond formation/destruction between water molecules and the amide groups present in PNIPAAm [ 12 , 13 ]. Research reporting on the application of such stimuli-responsive hydrogels for environmental remediation purposes is not novel and several well-organized reviews discuss synthesis and application specifics [ 14 , 15 , 16 ]. In short, because thermoresponsive hydrogels, such as PNIPAAm, exhibit hydrophilic behavior at a certain temperature range, many aqueous contaminants are allowed to easily diffuse into the hydrogel-based sorbent.…”

Section: Introductionmentioning

confidence: 99%

Thermoresponsive Cationic Polymers: PFAS Binding Performance under Variable pH, Temperature and Comonomer Composition

Frazar

Smith

Dziubla

et al. 2022

Gels

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The versatility and unique qualities of thermoresponsive polymeric systems have led to the application of these materials in a multitude of fields. One such field that can significantly benefit from the use of innovative, smart materials is environmental remediation. Of particular significance, multifunctional poly(N-isopropylacrylamide) (PNIPAAm) systems based on PNIPAAm copolymerized with various cationic comonomers have the opportunity to target and attract negatively charged pollutants such as perfluorooctanoic acid (PFOA). The thermoresponsive cationic PNIPAAm systems developed in this work were functionalized with cationic monomers N-[3-(dimethylamino)propyl]acrylamide (DMAPA) and (3-acrylamidopropyl)trimethylammonium chloride (DMAPAQ). The polymers were examined for swelling capacity behavior and PFOA binding potential when exposed to aqueous environments with varying pH and temperature. Comonomer loading percentages had the most significant effect on polymer swelling behavior and temperature responsiveness as compared to aqueous pH. PFOA removal efficiency was greatly improved with the addition of DMAPA and DMAPAQ monomers. Aqueous pH and buffer selection were important factors when examining binding potential of the polymers, as buffered aqueous environments altered polymer PFOA removal quite drastically. The role of temperature on binding potential was not as expected and had no discernible effect on the ability of DMAPAQ polymers to remove PFOA. Overall, the cationic systems show interesting swelling behavior and significant PFOA removal results that can be explored further for potential environmental remediation applications.

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Recent developments in stimuli responsive nanomaterials and their bionanotechnology applications

Cited by 12 publications

References 48 publications

Preparation and characterization of α-Fe₂O₃/Fe₃O₄ heteroplasmon nanoparticles via the hydrolysis-combustion-calcination process of iron nitrate

Preparation and characterization of α-Fe₂O₃/Fe₃O₄ heteroplasmon nanoparticles via the hydrolysis-combustion-calcination process of iron nitrate

Hydrogels and Hydrogel Nanocomposites: Enhancing Healthcare through Human and Environmental Treatment

Thermoresponsive Cationic Polymers: PFAS Binding Performance under Variable pH, Temperature and Comonomer Composition

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Recent developments in stimuli responsive nanomaterials and their bionanotechnology applications

Cited by 12 publications

References 48 publications

Preparation and characterization of α-Fe2O3/Fe3O4 heteroplasmon nanoparticles via the hydrolysis-combustion-calcination process of iron nitrate

Preparation and characterization of α-Fe2O3/Fe3O4 heteroplasmon nanoparticles via the hydrolysis-combustion-calcination process of iron nitrate

Hydrogels and Hydrogel Nanocomposites: Enhancing Healthcare through Human and Environmental Treatment

Thermoresponsive Cationic Polymers: PFAS Binding Performance under Variable pH, Temperature and Comonomer Composition

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Product

Resources

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Preparation and characterization of α-Fe₂O₃/Fe₃O₄ heteroplasmon nanoparticles via the hydrolysis-combustion-calcination process of iron nitrate

Preparation and characterization of α-Fe₂O₃/Fe₃O₄ heteroplasmon nanoparticles via the hydrolysis-combustion-calcination process of iron nitrate