One-pot synthesis of magnetic hybrid materials based on ovoid-like carboxymethyl-cellulose/cetyltrimethylammonium-bromide templates

Torres-Martínez, Nubia E.; Garza-Navarro, Marco A.; Porto, Raúl Lucio; García-Gutiérrez, Diana F.; Torres–Castro, Alejandro; González-González, V.

doi:10.1016/j.matchemphys.2013.06.001

Cited by 9 publications

(4 citation statements)

References 39 publications

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“…The entire NP system overcomes this barrier at T b where ZFC curve exhibits its maximum. [ 107 ] Additionally, ZFC and FC curves exhibit a significant irreversibility. Therefore, FC curve depicts an obvious increase in the magnetization above the ZFC curve maximum as the temperature declines below T b .…”

Section: Resultsmentioning

confidence: 99%

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New sonochemical magnetite nanoparticles functionalization approach of dithiooxamide–formaldehyde developed cellulose: From easy synthesis to recyclable 4‐nitrophenol reduction

Mehdaoui

Agren

Dhahri

et al. 2021

Applied Organom Chemis

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Magnetic [FA‐c‐(C‐DTX)@Fe3O4] nanocomposites have been prepared with a four‐step technique involving three mechanical stirring conventional steps to obtain [(FA‐c‐(DTX‐g‐DAC)] and an ultrasound‐assisted Fe3O4 coating approach to fabricate [FA‐c‐(C‐DTX)@Fe3O4]. Magnetic nanoparticles (NPs) (Fe3O4 NPs) synthesis and integration has been easily and rapidly approached under novel environmentally friendly optimized reaction conditions: an ethanol–water solution, one iron precursor use, short reaction time, low temperature, and an ultrasonic irradiation process. This new condition's unique combination is attributed to our new synthesis procedure. Sonochemically synthetisized [FA‐c‐(C‐DTX)@Fe3O4] were easily separated from the reaction mixture simply via external magnetic field application, and therefore, neither filtration nor centrifigation was required. The synthetisized samples have been investigated by Fourier transform infrared (FTIR) spectroscopy, nuclear magnetic resonance (NMR) spectroscopy, X‐ray photoelectron spectroscopy (XPS), X‐ray diffraction (XRD), thermogravimetry analysis (TGA), scanning electron microscopy (SEM), and vibrating‐sample magnetometry (VSM). Obtained outcomes including successful magnetite coating process, good crystallinity, homogenous morphology, enhanced thermal stability, and obvious magnetic properties suggested the potential of sonochemical procedure to fabricate and integrate magnetic NPs. This sonochemically synthesized catalyst was evaluated toward the reduction of the organic pollutant 4‐nitrophenol and showed excellent catalytic activity. This ultrasound‐assisted nanocomposites preparation is simply scalable to meet industrial application.

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Section: Resultsmentioning

confidence: 99%

“…Previous studies deduced comparable observations. [ 107,109,115 ]…”

Section: Resultsmentioning

confidence: 99%

New sonochemical magnetite nanoparticles functionalization approach of dithiooxamide–formaldehyde developed cellulose: From easy synthesis to recyclable 4‐nitrophenol reduction

Mehdaoui

Agren

Dhahri

et al. 2021

Applied Organom Chemis

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“…CMC based nanoparticles (NP) are generally investigated as self-assembled structures from CMC derivatives [10], hybrids or PEC [11]. Presently, the displacement reaction of sodium counterions by other metallic ions has been shown to form coordination complexes, investigated for nanomedicine applications [12]. In this paper, we firstly supposed that this behavior could be exploited for the obtainment of CMC-based NP by ionotropic gelation, in the presence of divalent cations such as Ca 2+ .…”

Section: Introductionmentioning

confidence: 99%

pH-Responsive Carboxymethylcellulose Nanoparticles for 68Ga-WBC Labeling in PET Imaging

et al. 2019

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Carboxymethylcellulose (CMC) is a well-known pharmaceutical polymer, recently gaining attention in the field of nanomedicine, especially as a polyelectrolyte agent for the formation of complexes with oppositely charged macromolecules. Here, we report on the application of pH-sensitive pharmaceutical grade CMC-based nanoparticles (NP) for white blood cells (WBC) PET imaging. In this context and as an alternative to 99mTc-HMPAO SPECT labeling, the use of 68Ga3+ as PET radionuclide was investigated since, at early time points, it could provide the greater spatial resolution and patient convenience of PET tomography over SPECT clinical practices. Two operator-friendly kit-type formulations were compared, with the intention of radiolabeling within a short time (10 min), under mild conditions (physiological pH, room temperature) and in agreement with the actual clinically applied guidelines. NP were labeled by directly using 68Ga3+ eluted in HCL 0.05 N, from hospital suited 68Ge/68Ga generator and in absence of chelator. The first kit type approach involved the application of 68Ga3+ as an ionotropic gelation agent for in-situ forming NP. The second kit type approach concerned the re-hydration of a proper freeze-dried injectable NP powder. pH-sensitive NP with 250 nm average diameter and 80% labeling efficacy were obtained. The NP dispersant medium, including a cryoprotective agent, was modulated in order to optimize the Zeta potential value (−18 mV), minimize the NP interaction with serum proteins and guarantee a physiological environment for WBC during NP incubation. Time-dependent WBC radiolabeling was correlated to NP uptake by using both confocal and FT-IR microscopies. The ready to use lyophilized NP formulation approach appears promising as a straightforward 68Ga-WBC labeling tool for PET imaging applications.

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“…Also the reaction can be performed in an environmentally benign solvent like water, which increases the versatility of the synthetic approach. Consequently, several researchers have used this biopolymer recently to tune the size and shape of metal and metal oxide NPs . In the present contribution, we report a promising alkaline hydrolysis technique to synthesize hollow SnO 2 nanostructures in presence of NaCMC at 65 °C.…”

Section: Introductionmentioning

confidence: 99%

Facile Biopolymer Assisted Synthesis of Hollow SnO₂ Nanostructures and Their Application in Dye Removal

2016

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Herein, we report the synthesis of SnO2 nanostructures by alkaline hydrolysis of the corresponding metal ions in presence of biopolymer additive such as carboxy methylcellulose at 65 °C. X‐ray diffraction studies confirmed the formation of pure crystalline tetragonal SnO2 nanostructures. Microscopic results revealed that addition of biopolymer results in the formation of hollow nanostructures. The sizes of such hollow nanostructures are controllable by varying the concentration of the biopolymer. The hollow nanostructures are further characterized by other spectroscopic techniques such as UV‐vis spectroscopy, photoluminescence spectroscopy, X‐ray photoelectron spectroscopy and energy dispersive X‐ray spectroscopy. These hollow SnO2 nanostructures are porous and show excellent adsorption capability in removal of organic dye, methylene blue from its aqueous solution at room temperature. The recovered SnO2 nanostructures can be reused in successive batches for dye adsorption without much losing its adsorption capacities.

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One-pot synthesis of magnetic hybrid materials based on ovoid-like carboxymethyl-cellulose/cetyltrimethylammonium-bromide templates

Cited by 9 publications

References 39 publications

New sonochemical magnetite nanoparticles functionalization approach of dithiooxamide–formaldehyde developed cellulose: From easy synthesis to recyclable 4‐nitrophenol reduction

New sonochemical magnetite nanoparticles functionalization approach of dithiooxamide–formaldehyde developed cellulose: From easy synthesis to recyclable 4‐nitrophenol reduction

pH-Responsive Carboxymethylcellulose Nanoparticles for 68Ga-WBC Labeling in PET Imaging

Facile Biopolymer Assisted Synthesis of Hollow SnO₂ Nanostructures and Their Application in Dye Removal

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One-pot synthesis of magnetic hybrid materials based on ovoid-like carboxymethyl-cellulose/cetyltrimethylammonium-bromide templates

Cited by 9 publications

References 39 publications

New sonochemical magnetite nanoparticles functionalization approach of dithiooxamide–formaldehyde developed cellulose: From easy synthesis to recyclable 4‐nitrophenol reduction

New sonochemical magnetite nanoparticles functionalization approach of dithiooxamide–formaldehyde developed cellulose: From easy synthesis to recyclable 4‐nitrophenol reduction

pH-Responsive Carboxymethylcellulose Nanoparticles for 68Ga-WBC Labeling in PET Imaging

Facile Biopolymer Assisted Synthesis of Hollow SnO2 Nanostructures and Their Application in Dye Removal

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Facile Biopolymer Assisted Synthesis of Hollow SnO₂ Nanostructures and Their Application in Dye Removal