Fabrication and Raman Studies οf MgO/SnO<sub>2</sub>Core-Shell Heteronanowires

Kim, Heung-Soo

doi:10.12693/aphyspola.116.58

Cited by 20 publications

(14 citation statements)

References 21 publications

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“…Raman peaks around 275.89, 442.15, and 1313.50 cm −1 (Figure 6(a)) are associated to the characteristics peaks of MgO and are found in good agreement with the previously reported research [46][47][48][49]. Generally, these bands are not present in the bulk MgO, so it confirms nanocrystalline phases within fabricated MgO [48] which is in concurrent to XRD analysis.…”

Section: Resultssupporting

confidence: 90%

Magnesium Oxide in Nanodimension: Model for MRI and Multimodal Therapy

Akram

Fakhar-e-Alam

Butt

et al. 2018

Journal of Nanomaterials

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The prime focus of this investigation is to determine which morphology of magnesium oxide (MgO) is nontoxic and accumulates in sufficient quantity to a human brain cellular/tissue model. Thus, nanostructured MgO was synthesized from a coprecipitation technique involving twin synthetic protocols and the resulting product was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), size distribution histogram, Fourier-transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) analysis and elemental composition was confirmed by EDX analysis. They were tested for selective antigen response in a human brain cancer model through biodistribution, biotoxicity via MTT assay, and tissue morphology. In addition, the MRI compatibility of MgO nanostructures and immunofluorescence studies were investigated on nanoconjugates with different immunoglobulins in the brain section. The results indicated that MgO had some degree of bindings with the antigens. These results led to the empirical modeling of MgO nanomaterials towards toxicity in cancer cells by analyzing the statistical data obtained by experiments. All these results are providing new rational strategy with the concept of MgO for MRI and PTT/PDT.

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Section: Resultssupporting

confidence: 90%

Magnesium Oxide in Nanodimension: Model for MRI and Multimodal Therapy

Akram

Fakhar-e-Alam

Butt

et al. 2018

Journal of Nanomaterials

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“…This suggestion allows assigning the band at 960 cm -1 as a LA+LO vibrational mode. The rather broad band composed of the line at 1080 cm -1 and accompanied by line at 1120 cm -1 was similar to those observed earlier [54,55] ascribed to the surface phonon modes in a TO-LO phonon gap [56]. Similarly to the authors of [56], we discovered, that TA phonon-and TO phonon-related Raman lines were not clearly observed, and the Raman lines of the TO-LO phonon gap were significantly suppressed in the most of our NPs.…”

Section: Raman Spectrasupporting

confidence: 87%

Effect of synthesis conditions on room-temperature ferromagnetic properties of Mg-O nanoparticles

Morozov

Sathasivam

Белоусова

et al. 2018

Journal of Alloys and Compounds

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Page 2: Considering the following sentence: "Experimentally RTFM has been observed in undoped MgO nanoparticles preferable synthesized by wet chemical routes", complete with: (see Table 1) A3: CORRECTED. 4) Page 2: Please, explain what the Author mean when they say: "the surface of such nanoparticles was not sufficiently clean" A4: CORRECTED as: "the surface of such nanoparticles could not sufficiently clean compared with NPs produced by gas-phase methods." Q5) Page 3: Substitute "metal magnesium" with "metallic magnesium" A5: "metal" is corrected to "metallic". 6) Page 4: Please, specify better the techniques that are used to evaluate the parameters listed in Table 2, or move the Table in the "Results and discussion" section A6: In page 4 the text was corrected as: "Some parameters of the NPs synthesis, including metal feed rates, gases flow rates, and corresponding collection zones are listed in Table 2. Table 2. Main properties of the Mg-O NPs. S-specific surface area obtained from BET measurements; -mean particle size obtained from SEM micrographs; y-MgO content and a-MgO lattice parameter obtained from XRD data; σ s-maximum specific magnetization (VSM, RT, 10 kOe)." 7) Page 5: As concerns the BET measurements, specify the measurements conditions (i.e., time, temperature, minimum pressure in outgassing procedure) A7: In the text on page 5 was added the sentence: "No outgassing procedures were applied before the BET measurements." 8) Page 6: Correct: "collected in the main zone" with "collected in the main zones" A8: CORRECTED. 9) Page 6: Considering the sentence: "In Figure 2a, NPs of about 50 nm in an average size is generally uniform cubes", please specify how the Authors evaluate the average size. From a first visual investigation, only the interval can be estimated. A9: In the text on page 5 written: "Particle size and morphology were investigated by scanning electron microscopy (SEM) using CARL ZEISS ULTRA PLUS. Electron micrographs were analyzed by Carl Zeiss AxioVision ver. 4.82 image processing software to calculate the average particle size ‹d› [22]." 10) Page 6: Author refer to the "Particle size distribution", but it is not reported. Did the Author evaluate the particles size distribution by SEM images? A10: Yes, see A12.

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“…Moreover, Li and coworkers [ 20 ] reported the effect of uptake of synthetized nanoparticles such as rod-like hydroxyapatite into the hepatoma cells. Furthermore, in a very prestigious study, Cao and coworkers [ 21 ] reported the mechanism of inhibition of proliferation of hepatocellular carcinoma cells in unique in vitro and in vivo investigations.…”

Section: Introductionmentioning

confidence: 99%

A Novel Method to Improve the Anticancer Activity of Natural-Based Hydroxyapatite against the Liver Cancer Cell Line HepG2 Using Mesoporous Magnesia as a Micro-Carrier

et al. 2017

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Micro-carriers are the best known vehicles to transport different kinds of drugs to achieve high impact. In this study, mesoporous magnesium oxide has been harnessed as a micro-carrier to encapsulate the anticancer candidate drug natural-based cubic hydroxyapatite (HAP). HAP@MgO composites with different HAP loading (0–60 wt %), were prepared by a hydrothermal treatment method using triethanol amine as a template. The characterization of the prepared composites were achieved by using XRD, Raman spectroscopy, FTIR and SEM. Characterization data confirm the formation of sphere-like structures of MgO containing HAP particles. It was observed that the size of the spheres increased with HAP loading up to 40 wt %, then collapsed. Furthermore, the anticancer property of the prepared composites was evaluated against the HepG2 liver cancer cell line. The HAP@MgO composites exhibited higher activity than neat MgO or HAP. The 20 wt % of HAP was the optimum loading to control cell proliferation by inducing apoptosis. Apoptosis was determined by typical apoptotic bodies produced by the cell membrane.

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Fabrication and Raman Studies οf MgO/SnO₂Core-Shell Heteronanowires

Cited by 20 publications

References 21 publications

Magnesium Oxide in Nanodimension: Model for MRI and Multimodal Therapy

Magnesium Oxide in Nanodimension: Model for MRI and Multimodal Therapy

Effect of synthesis conditions on room-temperature ferromagnetic properties of Mg-O nanoparticles

A Novel Method to Improve the Anticancer Activity of Natural-Based Hydroxyapatite against the Liver Cancer Cell Line HepG2 Using Mesoporous Magnesia as a Micro-Carrier

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Fabrication and Raman Studies οf MgO/SnO2Core-Shell Heteronanowires

Cited by 20 publications

References 21 publications

Magnesium Oxide in Nanodimension: Model for MRI and Multimodal Therapy

Magnesium Oxide in Nanodimension: Model for MRI and Multimodal Therapy

Effect of synthesis conditions on room-temperature ferromagnetic properties of Mg-O nanoparticles

A Novel Method to Improve the Anticancer Activity of Natural-Based Hydroxyapatite against the Liver Cancer Cell Line HepG2 Using Mesoporous Magnesia as a Micro-Carrier

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Fabrication and Raman Studies οf MgO/SnO₂Core-Shell Heteronanowires