A simple <i>in situ</i> synthesis of iron oxide magnetic nanoparticles embedded in thermosensitive polymer for DNA capture

Hossain, Saddam; Rahman, M. Mozibur; Nahar, Yeasmin; Rahman, Abdur; Sharafat, Mostafa Kaiyum; Hossain, M. Kawsar; Ochiai, Bungo; Elaı̈ssari, Abdelhamid; Ahmad, Hasan

doi:10.1557/jmr.2020.192

Cited by 12 publications

(8 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The increase in M s value is because of the improvement in uniformity of the surface characteristics and net electron spin stabilization via chemical bonding with silanol moieties. 65 The lower magnetism of the Fe 3 O 4 -OA is due to a reduction in the number of oxygen atoms surrounding the octahedral iron, which is five rather than six as in the bulk magnetite. The in-plane oxygen ions are also closer to the Fe ions at the surface of magnetite, enhancing the hybridization of d x 2 –y 2 orbitals.…”

Section: Resultsmentioning

confidence: 99%

“…The M s value of Fe 3 O 4 /SiO 2 -NH 2 nanoparticles was slightly higher (33.61 emug –1 ) than that of Fe 3 O 4 -OA particles (31.52 emug –1 ). The increase in M s value is because of the improvement in uniformity of the surface characteristics and net electron spin stabilization via chemical bonding with silanol moieties . The lower magnetism of the Fe 3 O 4 -OA is due to a reduction in the number of oxygen atoms surrounding the octahedral iron, which is five rather than six as in the bulk magnetite.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Facile Fabrication and Characterization of Amine-Functional Silica Coated Magnetic Iron Oxide Nanoparticles for Aqueous Carbon Dioxide Adsorption

Islam,

Rahman,

Alam

et al. 2024

ACS Omega

Self Cite

View full text Add to dashboard Cite

Surface active amine-functionalized silica coated magnetic iron oxide nanoparticles were prepared by a simple two-step process for adsorbing CO 2 gas from aqueous medium. First, oleic acid (OA) coated iron oxide magnetic particles (denoted as Fe 3 O 4 -OA) were prepared by a simple coprecipitation method. Then, the surface of the Fe 3 O 4 -OA particles was coated with silica by using tetraethyl orthosilicate. Finally, aminated Fe 3 O 4 / SiO 2 -NH 2 nanoparticles were concomitantly formed by the reactions of 3aminopropyl triethoxysilane with silica-coated particles. The formation of materials was confirmed by Fourier transform infrared spectral analysis. Transmission electron microscopic analysis revealed both spherical and needle-shaped morphologies of magnetic Fe 3 O 4 /SiO 2 -NH 2 particles with an average size of 15 and 68.6 nm, respectively. The saturation magnetization of Fe 3 O 4 /SiO 2 -NH 2 nanoparticles was found to be 33.6 emu g −1 , measured by a vibrating sample magnetometer at ambient conditions. The crystallinity and average crystallite size (7.0 nm) of the Fe 3 O 4 /SiO 2 -NH 2 particles were revealed from X-ray diffraction data analyses. Thermogravimetric analysis exhibited good thermal stability of the nanoadsorbent up to an elevated temperature. Zeta potential measurements revealed pH-sensitive surface activity of Fe 3 O 4 /SiO 2 -NH 2 nanoparticles in aqueous medium. The produced magnetic Fe 3 O 4 /SiO 2 -NH 2 nanoparticles also exhibited efficient proton capturing activity (92%). The particles were used for magnetically recyclable adsorption of aqueous CO 2 at different pH values and temperatures. Fe 3 O 4 /SiO 2 -NH 2 nanoparticles demonstrated the highest aqueous CO 2 adsorption efficiency (90%) at 40 °C, which is clearly two times higher than that of nonfunctionalized Fe 3 O 4 -OA particles.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Facile Fabrication and Characterization of Amine-Functional Silica Coated Magnetic Iron Oxide Nanoparticles for Aqueous Carbon Dioxide Adsorption

Islam,

Rahman,

Alam

et al. 2024

ACS Omega

Self Cite

View full text Add to dashboard Cite

show abstract

“…Those observations unambiguously demonstrate the critical role of the surrounding matrix in simultaneously providing active sites for NP nucleation; suppressing undesired aggregation; imposing constraints that limit the growth of NPs; altering the reaction mechanisms; promoting one crystalline phase at the expense of the others; and controlling the shape, size and morphology of the resultant NPs. In another study, the coprecipitation of ferrous (Fe 2+ ) and ferric (Fe 3+ ) ions (at basic conditions) in the presence of the thermosensitive poly(N-isopropylacrylamide-co-2-aminoethyl methacrylate) P(NIPAAm-co-AEM) resulted in the synthesis of magnetite (Fe 3 O 4 ) polymer nanocomposites with the saturation of magnetisation 75 emu/g and significant DNA capture capabilities (up to 18.5 mg/g) [ 46 ].…”

Section: Discussionmentioning

confidence: 99%

In Situ Generation of Nanoparticles on and within Polymeric Materials

Kelarakis

2024

Polymers

View full text Add to dashboard Cite

It is well-established that the structural, morphological and performance characteristics of nanoscale materials critically depend upon the dispersion state of the nanofillers that is, in turn, largely determined by the preparation protocol. In this report, we review synthetic strategies that capitalise on the in situ generation of nanoparticles on and within polymeric materials, an approach that relies on the chemical transformation of suitable precursors to functional nanoparticles synchronous with the build-up of the nanohybrid systems. This approach is distinctively different compared to standard preparation methods that exploit the dispersion of preformed nanoparticles within the macromolecular host and presents advantages in terms of time and cost effectiveness, environmental friendliness and the uniformity of the resulting composites. Notably, the in situ-generated nanoparticles tend to nucleate and grow on the active sites of the macromolecular chains, showing strong adhesion on the polymeric host. So far, this strategy has been explored in fabrics and membranes comprising metallic nanoparticles (silver, gold, platinum, copper, etc.) in relation to their antimicrobial and antifouling applications, while proof-of-concept demonstrations for carbon- and silica-based nanoparticles as well as titanium oxide-, layered double hydroxide-, hectorite-, lignin- and hydroxyapatite-based nanocomposites have been reported. The nanocomposites thus prepared are ideal candidates for a broad spectrum of applications such as water purification, environmental remediation, antimicrobial treatment, mechanical reinforcement, optical devices, etc.

show abstract

“…For instance, Hossain et al 50 prepared thermal-and pH-RMPHs through the co-precipitation of ferrous (Fe 2+ ) and ferric (Fe 3+ ) ions triggered by the addition of ammonium hydroxide (NH 4 OH) in the presence of poly(N-isopropylacrylamide-co-2-aminoethylmethacrylate hydrochloride) (P(NIPAM-co-AEMAH)) statistical copolymer chains. Due to the basic conditions, the AEMAH units are deprotonated and the resulting ammonium groups become available to interact with the surface of the IONPs formed in situ.…”

Section: Magnetic Core-shell Polymer Particlesmentioning

confidence: 99%

“…For instance, Hossain et al 50 . prepared thermal‐ and pH‐RMPHs through the co‐precipitation of ferrous (Fe 2+ ) and ferric (Fe 3+ ) ions triggered by the addition of ammonium hydroxide (NH 4 OH) in the presence of poly( N ‐isopropylacrylamide‐ co‐ 2‐aminoethylmethacrylate hydrochloride) (P(NIPAM‐ co ‐AEMAH)) statistical copolymer chains.…”

Section: Stimuli‐responsive Magnetic Polymer Hybridsmentioning

confidence: 99%

Rational design of stimuli‐responsive magnetic polymer hybrid (nano)materials

Nguyen

Ménager

Rieger

et al. 2023

Polymer International

View full text Add to dashboard Cite

Combining organic and inorganic materials is a fascinating strategy to produce hybrid materials that combine the advantages of both polymeric and inorganic materials. Among the various types of organic–inorganic hybrids, stimuli‐responsive magnetic polymer hybrids (RMPHs) are particularly promising materials for a wide variety of applications. While the magnetic properties are generally provided by the presence of magnetic nanoparticles, such as iron oxide nanoparticles, the polymeric compound brings the stimuli‐responsiveness, e.g. responsiveness to pH, temperature, redox reaction or irradiation. Furthermore, as the chemical structure and architecture of the polymeric materials are diverse and easily tunable, stimuli‐RMPHs have found applications in various domains, including catalysis, biotechnology, (bio)imaging and cancer therapy. Given the importance of the hybrids' shape and morphology for the targeted application, this review presents the possible synthetic strategies to rationally design stimuli‐RMPHs of various morphologies ranging from nanometric core–shell structures to nanogels, microgels and membranes. © 2023 The Authors. Polymer International published by John Wiley & Sons Ltd on behalf of Society of Industrial Chemistry.

show abstract

A simple in situ synthesis of iron oxide magnetic nanoparticles embedded in thermosensitive polymer for DNA capture

Abstract: Abstract

Cited by 12 publications

References 40 publications

Facile Fabrication and Characterization of Amine-Functional Silica Coated Magnetic Iron Oxide Nanoparticles for Aqueous Carbon Dioxide Adsorption

Facile Fabrication and Characterization of Amine-Functional Silica Coated Magnetic Iron Oxide Nanoparticles for Aqueous Carbon Dioxide Adsorption

In Situ Generation of Nanoparticles on and within Polymeric Materials

Rational design of stimuli‐responsive magnetic polymer hybrid (nano)materials

Contact Info

Product

Resources

About