Ex situ integration of iron oxide nanoparticles onto the exfoliated expanded graphite flakes in water suspension

Hybrid structures composed of exfoliated expanded graphite (EG) and iron oxide nanocrystals have been produced by an ex situ process. The iron oxide nanoparticles coated with meso-2,3-dimercaptosuccinic acid (DMSA), or poly(acrylic) acid (PAA) were integrated onto the exfoliated EG flakes by mixing their aqueous suspensions at room temperature under support of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC) and N-hydroxysuccin-nimide (NHS). EG flakes have been used both, naked and functionalized with branched polyethylenimine (PEI). Complete integration of two constituents has been achieved and mainteined stable for more than 12 months. No preferential spatial distribution of anchoring sites for attachement of iron oxide nanoparticles has been observed, regardless EG flakes have been used naked or functionalized with PEI molecules. The structural and physico-chemical characteristics of the exfoliated expanded graphite and its hybrids nanostructures has been investigated by SEM, TEM, FTIR and Raman techniques.

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Self-heating properties of iron oxide nanoparticles prepared at room temperature via ultrasonic-assisted co-precipitation process

Soft Materials ◽

10.1080/1539445x.2021.1917425 ◽

2021 ◽

pp. 1-10

Author(s):

Mohamed S. A. Darwish ◽

L.M. Al-Harbi

Keyword(s):

Iron Oxide ◽

Iron Oxide Nanoparticles ◽

Room Temperature ◽

Precipitation Process ◽

Oxide Nanoparticles ◽

Self Heating ◽

Ultrasonic Assisted ◽

Co Precipitation

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Mechanisms of highly stabilized ex-situ oleic acid-modified iron oxide nanoparticles functionalized with 4-pentynoic acid

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2017.09.051 ◽

2018 ◽

Vol 203 ◽

pp. 212-222 ◽

Cited By ~ 7

Author(s):

Aainaa Aqilah Baharuddin ◽

Bee Chin Ang ◽

Nurul Athirah Abu Hussein ◽

Andri Andriyana ◽

Yew Hoong Wong

Keyword(s):

Oleic Acid ◽

Iron Oxide ◽

Iron Oxide Nanoparticles ◽

Ex Situ ◽

Oxide Nanoparticles

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Facile aqueous, room temperature preparation of high transverse relaxivity clustered iron oxide nanoparticles

Colloids and Surfaces A Physicochemical and Engineering Aspects ◽

10.1016/j.colsurfa.2019.03.023 ◽

2019 ◽

Vol 570 ◽

pp. 165-171 ◽

Cited By ~ 2

Author(s):

Nicholas J. Hobson ◽

Xian Weng ◽

Marianne Ashford ◽

Nguyen T.K. Thanh ◽

Andreas G. Schätzlein ◽

...

Keyword(s):

Iron Oxide ◽

Iron Oxide Nanoparticles ◽

Room Temperature ◽

Oxide Nanoparticles ◽

Temperature Preparation

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One-Pot, Exchange-Free, Room-Temperature Synthesis of Sub-10 nm Aqueous, Noninteracting, and Stable Zwitterated Iron Oxide Nanoparticles

Langmuir ◽

10.1021/la304872d ◽

2013 ◽

Vol 29 (8) ◽

pp. 2572-2579 ◽

Cited By ~ 21

Author(s):

Zaki G. Estephan ◽

Hanaa H. Hariri ◽

Joseph B. Schlenoff

Keyword(s):

Iron Oxide ◽

Iron Oxide Nanoparticles ◽

Room Temperature ◽

Oxide Nanoparticles ◽

Temperature Synthesis ◽

One Pot ◽

Room Temperature Synthesis

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Synthesis and Effect of Some Parameters through Reverse Micelles Route of Iron Oxide Nanoparticles

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.152-153.205 ◽

2009 ◽

Vol 152-153 ◽

pp. 205-208 ◽

Cited By ~ 2

Author(s):

H. Arabi ◽

S. Nateghi ◽

S. Sadeghi

Keyword(s):

Iron Oxide ◽

Iron Oxide Nanoparticles ◽

Reverse Micelles ◽

Room Temperature ◽

Molar Ratio ◽

Oxide Nanoparticles ◽

X Ray Diffraction ◽

X Ray ◽

Significant Difference ◽

Vibration Sample Magnetometer

Iron oxide nanoparticles were synthesis by reverse micelle method. X-ray diffraction technique and vibration sample magnetometer were applied to characterize the produced samples at different conditions and parameters for synthesis route. There is no significant difference between samples prepared at 5°C and room temperature except a better crystalline at room temperature. The molar ratio of water to surfactant (w parameter) and concentration of the salt solution on size and magnetic properties of nanoparticles have been investigated. Increasing w leads to producing particles with larger size i.e. for w=16.83, 11.22, and 5.6, particles size are 15.22, 11.66 and 10.5 nm, respectively. The size of nanoparticles are in the range of 9 to 20 nanometers

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Chitosan based in situ and ex situ magnetic iron oxide nanoparticles for rapid endotoxin removal from protein solutions

Materials Chemistry Frontiers ◽

10.1039/c8qm00668g ◽

2019 ◽

Vol 3 (4) ◽

pp. 716-725 ◽

Cited By ~ 6

Author(s):

Achyut Konwar ◽

Devasish Chowdhury ◽

Abhijit Dan

Keyword(s):

Iron Oxide ◽

Iron Oxide Nanoparticles ◽

Bacterial Endotoxin ◽

Ex Situ ◽

Protein Solutions ◽

Oxide Nanoparticles ◽

Magnetic Iron Oxide Nanoparticles ◽

Magnetic Iron Oxide

Chitosan based iron oxide nanoparticles have been employed for reversible capture and removal of bacterial endotoxin from aqueous protein solutions.

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Magnetization and Specific Absorption Rate Studies of Ball-Milled Iron Oxide Nanoparticles for Biomedicine

Journal of Nanoparticles ◽

10.1155/2013/181820 ◽

2013 ◽

Vol 2013 ◽

pp. 1-13 ◽

Cited By ~ 8

Author(s):

P. Burnham ◽

N. Dollahon ◽

C. H. Li ◽

A. J. Viescas ◽

G. C. Papaefthymiou

Keyword(s):

Iron Oxide ◽

Iron Oxide Nanoparticles ◽

Room Temperature ◽

Average Diameter ◽

Magnetic Interactions ◽

Spherical Particles ◽

Oxide Nanoparticles ◽

Zero Field ◽

Specific Absorption ◽

Spectroscopic Signatures

Comparative studies are presented of iron oxide nanoparticles in the 7–15 nm average diameter range ball milled in hexane in the presence of oleic acid. Transmission electron microscopy identified spherical particles of decreasing size as milling time and/or surfactant concentration increased. Micromagnetic characterization via Mössbauer spectroscopy at room temperature yielded broadened magnetic spectroscopic signatures, while macromagnetic characterization via vibrating sample magnetometry of 7-8 nm diameter particles showed largely superparamagnetic behavior at room temperature and hysteretic at 2 K. Zero-field and field-cooled magnetization curves exhibited a broad maximum at ~215 K indicating the presence of strong interparticle magnetic interactions. The specific absorption rates of ferrofluids based on these nanoparticle preparations were measured in order to test their efficacies as hyperthermia agents.

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Iron oxide nanoparticle incorporated cement mortar composite: correlation between physico-chemical and physico-mechanical properties

Materials Advances ◽

10.1039/d0ma00295j ◽

2020 ◽

Vol 1 (6) ◽

pp. 1835-1840

Author(s):

Mohammad Valizadeh Kiamahalleh ◽

Abbas Alishah ◽

Fereshteh Yousefi ◽

Saeid Hojjati Astani ◽

Aliakbar Gholampour ◽

...

Keyword(s):

Mechanical Properties ◽

Iron Oxide ◽

Iron Oxide Nanoparticles ◽

Cement Mortar ◽

Iron Oxide Nanoparticle ◽

Oxide Nanoparticles ◽

Hydration Products ◽

Physico Chemical ◽

Oxide Nanoparticle ◽

Mechanical Performances

Incorporation of iron oxide nanoparticles into cement mortar composites enhances the formation of hydration products and the physico-mechanical performances of the composite construct.

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