Bifunctional Fe3O4/Ag nanoparticles obtained by two-step laser ablation in pure water

Muniz‐Miranda, Maurizio; Gellini, Cristina; Giorgetti, E.; Margheri, Giancarlo

doi:10.1016/j.jcis.2016.08.040

Cited by 23 publications

(12 citation statements)

References 41 publications

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“…There are various ways to prepare Fe 3 O 4 nanoparticles, which have been reported earlier, such as arc discharge [30], mechanical grinding [31], laser ablation [32], micro emulsions [33], and high temperature decomposition of organic precursors [34]. These methods can be used to prepare magnetite with controllable particle diameters.…”

Section: Fe 3 O 4 @Chitosan Core/shell Nanoparticlesmentioning

confidence: 99%

Iron Oxide Biomagnetic Nanoparticles (IO-BMNPs); Synthesis, Characterization and Biomedical Application–A Review

Nochehdehi¹,

Thomas²,

Sadri³

et al. 2017

J Nanomed Nanotechnol

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Nanotechnology is a multidisciplinary branch of science which encompasses numerous diverse fields of science and technology, ranging from biomedical, pharmaceutical, agricultural, environmental, advanced materials, chemical science, physics, electronics, information technology, and so on. Physical and Chemical properties as a major advantages of Nanoparticles can be used in various applications from Industries to medicine. Besides, Magnetic nanoparticles for medical applications have been developed by many researchers. In recent decades, it has received attention by virtue of their potential for applications in different fields. Due to several advantages and widespread applications of magnetic Nanoparticles in biotechnology, medical, material science, engineering, and environmental areas, much attention has been paid to the synthesis of different kinds of Biomagnetic nanoparticles (BMNPs). Core-shell nanoparticles include of coated various materials like: biopolymers (Chitosan, PAA) and bioceramics (Hydroxyapatite) as a shell on top of them and different hard and soft materials like metal oxide (Iron oxide and Cob alt composite) as a core. Improved properties of core-shell nanoparticles like less cytotoxicity, increase biocompatibility, decrease in an interactions with biomolecules, increase physicochemical stability and sort of that, can be due to their use in biological applications. After reviewing several research and review articles and synthesis procedure of Iron based Bio-magnetic Nanoparticles (BMNPs), we should emphasize that, It can be used in different applications like magnetic resonance imaging (MRI), drug delivery systems (DDS), immunoassay, also specially in diagnosis and treatment of cancer via hyperthermia (heat therapy) method.

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Section: Fe 3 O 4 @Chitosan Core/shell Nanoparticlesmentioning

confidence: 99%

Iron Oxide Biomagnetic Nanoparticles (IO-BMNPs); Synthesis, Characterization and Biomedical Application–A Review

Nochehdehi¹,

Thomas²,

Sadri³

et al. 2017

J Nanomed Nanotechnol

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“…Amendola et al demonstrated the utility of Au–Fe alloy NPs in SERS and Magnetic Resonance Imaging/Computed tomography imaging . Muniz‐Miranda et al reported the SERS activity of Ag–Fe NPs obtained by two‐step laser ablation . However, these NPs achieved from the irradiation of alloy (Au–Fe/Ag–Fe) targets, and cost wise, they are very expensive.…”

Section: Introductionmentioning

confidence: 99%

“…[36] Muniz-Miranda et al reported the SERS activity of Ag-Fe NPs obtained by two-step laser ablation. [37] However, these NPs achieved from the irradiation of alloy (Au-Fe/Ag-Fe) targets, and cost wise, they are very expensive. Moreover, the NPs-based SERS substrates often caused the problems regarding particle stability, signal homogeneity, controllability, and the nonuniform distribution of hotspots over the large areas.…”

Section: Introductionmentioning

confidence: 99%

Surface‐enhanced Raman scattering studies of gold‐coated ripple‐like nanostructures on iron substrate achieved by femtosecond laser irradiation in water

Byram

Moram

Soma

2019

J Raman Spectroscopy

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During the past several years, numerous efforts have been accomplished on designing efficient surface‐enhanced Raman scattering (SERS) substrates with high sensitivity, good reproducibility, and recyclable nature. However, it still remains a significant challenge to realize all these qualities in a single substrate. We have fabricated ripple‐like nanostructures (NSs) on Iron (Fe) substrate using femtosecond (fs) laser irradiation of Fe target in distilled water. These ripple‐like structures had periodicities in the range of ~90–190 nm, which was confirmed from the analysis of field emission scanning electron microscope (FESEM) data. We subsequently deposited a thin layer of gold on these ripple‐like Fe NSs using thermal evaporation. Later, these coated NSs were effectively utilized as SERS substrates for methylene blue (MB) detection and were found to be sensitive evident from the data obtained at a very low concentration of 500pM. Furthermore, we observed that the SERS signal variations on the substrate were <11.2% indicating the reproducible nature of these substrates. Additionally, we demonstrate that these substrates can be reused (we establish this for three times consecutively) by detecting malachite green (MG) and an explosive molecule (picric acid, PA) followed by the mixture compound (Rhodamine 6G+MB) through employment of simple cleaning procedures. The detected molecular concentrations in terms of masses were found to be 3.2 pg, 36.5 pg, and 23 ng for MB (for a concentration of 500pM), MG (for a concentration of 5nM), and PA (for a concentration of 5μM), respectively. Furthermore, these Fe NSs exhibited superior batch‐to‐batch reproducibility with a relative standard deviation (RSD) value of ~l4%. The proposed method of fabricating ripple structures as SERS platforms are highly feasible, reliable, and have great potential for on‐site detection of several analyte molecules with an easily transportable Raman spectrometer.

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“…The presence of iron oxide gives the bimetallic colloid new possibilities of adsorption in addition to those inherent to gold nanoparticles, especially regarding organic pollutants and heavy metals, allowing to remove them from the aqueous environment by applying a magnetic field. Moreover, these nanoparticles, thanks to their low toxicity, are potentially useful not only in the field of sensors, but also for biomedical applications.Nanomaterials 2020, 10, 132 2 of 13 of iron and silver [23] and of nickel and silver [24] were employed to obtain magneto-plasmonic colloidal nanoparticles.Here, we propose the fabrication of bifunctional Fe 3 O 4 /Au nanoparticles obtained by the two-step laser ablation of iron and gold targets in water, along with microscopic and spectroscopic characterization. To this end, high-resolution transmission electron microscopy (HRTEM) and selected area electron diffraction (SAED) analyses have been performed, and visible absorption, XPS, Raman, and SERS spectra have been obtained.…”

mentioning

confidence: 99%

“…Nanomaterials 2020, 10, 132 2 of 13 of iron and silver [23] and of nickel and silver [24] were employed to obtain magneto-plasmonic colloidal nanoparticles.…”

mentioning

confidence: 99%

Spectroscopic and Microscopic Analyses of Fe3O4/Au Nanoparticles Obtained by Laser Ablation in Water

Muniz‐Miranda

Giorgetti

2020

Nanomaterials

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Magneto-plasmonic nanoparticles constituted of gold and iron oxide were obtained in an aqueous environment by laser ablation of iron and gold targets in two successive steps. Gold nanoparticles are embedded in a mucilaginous matrix of iron oxide, which was identified as magnetite by both microscopic and spectroscopic analyses. The plasmonic properties of the obtained colloids, as well as their adsorption capability, were tested by surface-enhanced Raman scattering (SERS) spectroscopy using 2,2′-bipyridine as a probe molecule. DFT calculations allowed for obtaining information on the adsorption of the ligand molecules that strongly interact with positively charged surface active sites of the gold nanoparticles, thus providing efficient SERS enhancement. The presence of iron oxide gives the bimetallic colloid new possibilities of adsorption in addition to those inherent to gold nanoparticles, especially regarding organic pollutants and heavy metals, allowing to remove them from the aqueous environment by applying a magnetic field. Moreover, these nanoparticles, thanks to their low toxicity, are potentially useful not only in the field of sensors, but also for biomedical applications.

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Bifunctional Fe3O4/Ag nanoparticles obtained by two-step laser ablation in pure water

Cited by 23 publications

References 41 publications

Iron Oxide Biomagnetic Nanoparticles (IO-BMNPs); Synthesis, Characterization and Biomedical Application–A Review

Iron Oxide Biomagnetic Nanoparticles (IO-BMNPs); Synthesis, Characterization and Biomedical Application–A Review

Surface‐enhanced Raman scattering studies of gold‐coated ripple‐like nanostructures on iron substrate achieved by femtosecond laser irradiation in water

Spectroscopic and Microscopic Analyses of Fe3O4/Au Nanoparticles Obtained by Laser Ablation in Water

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