Abstract:Green synthesis of metal nanoparticles, such as silver or gold nanoparticles, has been attracting increasing attention in recent years. Functionalized magnetite nanoparticles have many uses in various applications, including nanoelectronic devices, molecular recognition, biomedical applications, drug delivery targeting, and optical devices. In this investigation, magnetic cores (Fe3O4) were synthesized using a fabrication method involving coprecipitation ofFe2+andFe3+. In the next step, magnetite-gold composit… Show more
“…Further, Eucalyptus camaldulensis was used for the reduction of Au +3 on the surface of magnetite nanoparticles and for the functionalization of the Au–Fe 3 O 4 nanocomposite particles [95]. UV–vis spectra showed a redshift due to the surface plasmon resonance of Au.…”
Section: Reviewmentioning
confidence: 99%
“…Fig. 2Absorbance spectra of gold nanoparticles ( solid line ) and magnetite-gold composite nanoparticles ( dotted line ) [95]
…”
Enshrined in this review are the biogenic fabrication and applications of coated and uncoated iron and iron oxide nanoparticles. Depending on their magnetic properties, they have been used in the treatment of cancer, drug delivery system, MRI, and catalysis and removal of pesticides from potable water. The polymer-coated iron and iron oxide nanoparticles are made biocompatible, and their slow release makes them more effective and lasting. Their cytotoxicity against microbes under aerobic/anaerobic conditions has also been discussed. The magnetic moment of superparamagnetic iron oxide nanoparticles changes with their interaction with biomolecules as a consequence of which their size decreases. Their biological efficacy has been found to be dependent on the shape, size, and concentration of these nanoparticles.
“…Further, Eucalyptus camaldulensis was used for the reduction of Au +3 on the surface of magnetite nanoparticles and for the functionalization of the Au–Fe 3 O 4 nanocomposite particles [95]. UV–vis spectra showed a redshift due to the surface plasmon resonance of Au.…”
Section: Reviewmentioning
confidence: 99%
“…Fig. 2Absorbance spectra of gold nanoparticles ( solid line ) and magnetite-gold composite nanoparticles ( dotted line ) [95]
…”
Enshrined in this review are the biogenic fabrication and applications of coated and uncoated iron and iron oxide nanoparticles. Depending on their magnetic properties, they have been used in the treatment of cancer, drug delivery system, MRI, and catalysis and removal of pesticides from potable water. The polymer-coated iron and iron oxide nanoparticles are made biocompatible, and their slow release makes them more effective and lasting. Their cytotoxicity against microbes under aerobic/anaerobic conditions has also been discussed. The magnetic moment of superparamagnetic iron oxide nanoparticles changes with their interaction with biomolecules as a consequence of which their size decreases. Their biological efficacy has been found to be dependent on the shape, size, and concentration of these nanoparticles.
“…The nano-Fe 3 O 4 particles (cores) were first synthesized by co-precipitation of Fe (II) and Fe (III) chlorides (Fe II/Fe III ratio of 0.5) in NaOH solution as described in the previous works [35,36] A c c e p t e d M a n u s c r i p t 8 magnetic nanoparticles were mixed with 5 mL of glutaraldehyde (25%) as cross-linker at 50 °C for 5 h under stirring. After washing the product with water via a permanent magnet, the final nanoparticles were dried in an oven at 120 °C for 30 min.…”
Section: Preparation Of Fe 3 O 4 /Tmc/au Nanocompositementioning
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