Magnetic Hyperthermia and Photocatalytic Properties of MnFe2O4 Nanoparticles Synthesized by Solvothermal Reflux Method

Manohar, Ala; Krishnamoorthi, C.; Pavithra, C.; Thota, Narayana

doi:10.1007/s10948-020-05685-x

Cited by 46 publications

(13 citation statements)

References 44 publications

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“…First Magnetic materials include: (i) the classical Fe 3 O 4 , easily formed by the coprecipitation reaction, but also prepared with tunable shapes and behaviors using sol-gel and hydrothermal pathways [24,31]; (ii) MnFe 2 O 3 , which is a good photocatalyst in activating H 2 O 2 or peroxymonosulfate for substrate oxidation [25,35,36,39]; (iii) CoFe 2 O 4 , often employed as an adsorbent [33,41]; (iv) among others, the zero valent iron Fe 0 (ZVI), typically produced by reduction from oxides, which covers a special role due its very high magnetization that makes it suitable in responding very efficiently to applied magnetic fields for a fast separation from aqueous media [1,30].…”

Section: Refmentioning

confidence: 99%

The “Lab4treat” Outreach Experience: Preparation of Sustainable Magnetic Nanomaterials for Remediation of Model Wastewater

et al. 2021

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The Lab4treat experience has been developed to demonstrate the use of magnetic materials in environmental applications. It was projected in the frame of the European project Mat4Treat, and it was tested several times in front of different audiences ranging from school students to the general public in training and/or divulgation events. The experience lends itself to discuss several aspects of actuality, physics and chemistry, which can be explained by modulating the discussion depth level, in order to meet the interests of younger or more experienced people and expand their knowledge. The topic is relevant, dealing with the recycling of urban waste and water depollution. The paper is placed within the field of water treatment for contaminant removal; therefore, a rich collection of recent (and less recent) papers dealing with magnetic materials and environmental issues is described in the Introduction section. In addition, the paper contains a detailed description of the experiment and a list of the possible topics which can be developed during the activity. The experimental approach makes the comprehension of scientific phenomena effective, and, from this perspective, the paper can be considered to be an example of interactive teaching.

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Section: Refmentioning

confidence: 99%

The “Lab4treat” Outreach Experience: Preparation of Sustainable Magnetic Nanomaterials for Remediation of Model Wastewater

et al. 2021

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“…where β is the FWHM of the peak, D is the crystallite size, λ is the 0.154056 nm, K is 0.89, and ε is the lattice strain (Manohar et al, 2021;Mesquita et al, 2021).…”

Section: Resultsmentioning

confidence: 99%

Luminescence and structural properties of Ca1-xZrO3:Eux: An experimental and theoretical approach

Assis¹,

Oliveira²,

Gouveia³

et al. 2022

Eclet. Quim. J.

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The influence of Eu3+ cations in the host matrix of CaZrO3 was investigated by analyzing its luminescence and structural properties. The Ca1-xZrO3:Eux crystals (x = 0.01, 0.02, 0.04, and 0.08 mol%) were obtained by a simple sol-gel method followed by a soft thermal treatment without any surfactant. The structural characterization was performed at short-, medium- and long-distance to verify the effect of the dopant in the host matrix. To endorse the experimental results, first-principles calculations were performed by using the CRYSTAL program associated with the density functional theory. The luminescence profile of the sample was investigated by analyzing the excitation and emission spectrum monitoring the emission at 614 nm and excited at 394 nm, noting that the sample Eu-doped with 0.08 mol% has greater emission intensity. The color variations of the characteristic emissions of Ca1-xZrO3:Eux crystals were evaluated according to the Commission Internationale de L'�clairage, observing a red shift for all Eu-doped samples. A general luminescence scheme was proposed combining the density of state and the band structure calculations.

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“…X-ray diffraction is the most powerful technique for probing the internal structure of amorphous and crystal materials and for determining with high precision the actual atomic arrangement in space. [17][18][19][20][21][22][23][24][25] Figure 1 shows the XRD patterns of un-doped and Er +3 doped sodium zinc borate glass samples. The broad and diffused patterns appeared at 31.48 o and 48.18 o indicate the absence of such long-range ordered structure in our all samples.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, Optical Absorption and Radiation Shielding Performance of Sodium Zinc Borate-Er2O3 Glasses

Alrowaili

Taha

Brahim

et al. 2021

Journal of Elec Materi

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Borate glasses with chemical composition 55 B 2 O 3-10 ZnO-x Er 2 O 3-(35-x) Na 2 O mol.%, (where x = 0, 2 and 4 mol.%) were prepared by conventional melt-quenching. X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and UV-Vis spectroscopy were used to characterize the structural and optical properties of the prepared samples. XRD analysis confirms the amorphous nature of these glasses. The density and the molar volume of the prepared glasses were determined. Optical absorption measurements reveal 11 bands corresponding to electronic transitions in Er 3+ ion from the ground state 4 I 15/2 to excited levels. Mass attenuation coefficient (MAC) values were calculated as a function of different photon energies using Phy-X database software. Other shielding parameters such as the half value layer (HVL), the tenth value layer (TVL) and the effective atomic number Zeff were extracted from the determined mass attenuation coefficient (MAC). The results show that MAC increases with the increase in Er 2 O 3 content and decreases with increasing photon energy. The results of this work indicate that the content of Er 2 O 3 is responsible for the attenuation enhancement and that the novel glass prepared in this study holds great promise for future radiation shielding applications.

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Magnetic Hyperthermia and Photocatalytic Properties of MnFe2O4 Nanoparticles Synthesized by Solvothermal Reflux Method

Cited by 46 publications

References 44 publications

The “Lab4treat” Outreach Experience: Preparation of Sustainable Magnetic Nanomaterials for Remediation of Model Wastewater

The “Lab4treat” Outreach Experience: Preparation of Sustainable Magnetic Nanomaterials for Remediation of Model Wastewater

Luminescence and structural properties of Ca1-xZrO3:Eux: An experimental and theoretical approach

Synthesis, Optical Absorption and Radiation Shielding Performance of Sodium Zinc Borate-Er2O3 Glasses

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