Influence of Gd-doping on structural, magnetic, and self-heating properties of Fe3O4 nanoparticles towards magnetic hyperthermia applications

Hazarika, Krishna Priya; Fopase, Rushikesh; Pandey, Lalit M.

doi:10.1016/j.physb.2022.414237

Cited by 14 publications

(12 citation statements)

References 66 publications

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“…Herein, the scan specifies that Fe ions have valence states of 2 + and 3 + , and the satellite Fe peaks represent the bond formation initiated by octahedral (O h ) and tetrahedral sites (T h ). 9 The observed C 1s, N 1s, and O 1s spectra in Figure 9c,d, with a precise nitrogen peak at around 399 eV, confirm the presence of chitosan on the surface of the NPs. Henceforth, the complete survey scan displayed in Figure 9e shows peaks corresponding to iron, gadolinium, oxygen, carbon, and nitrogen, indicating the presence of both the Gddoped magnetite core and the chitosan coating.…”

Section: Structure and Morphology Studysupporting

confidence: 51%

“…However, Figure b illustrates the core Fe 2p electron scan of the processed MNPs at high resolution, exposing the spin–orbital characteristics of 2p 3/2 and 2p 1/2 at the peaks ∼711 and ∼722 eV, respectively. Herein, the scan specifies that Fe ions have valence states of 2 + and 3 + , and the satellite Fe peaks represent the bond formation initiated by octahedral (O h ) and tetrahedral sites (T h ) . The observed C 1s, N 1s, and O 1s spectra in Figure c,d, with a precise nitrogen peak at around 399 eV, confirm the presence of chitosan on the surface of the NPs.…”

Section: Resultsmentioning

confidence: 90%

“…The comprehensive route for preparing the Gd-doped Fe 3 O 4 (GdFO) MNPs is exemplified in our prior work. 9 Therefore, we worked on the 7% Gd-doped Fe 3 O 4 system for the capture of dextran and chitosan. Here, we report the concise expression of the synthesizing procedure for dextran-and chitosan-coated Gddoped Fe 3 O 4 MNPs only.…”

Section: Preparation Of the Mnpsmentioning

confidence: 99%

“…The comprehensive route for preparing the Gd-doped Fe 3 O 4 (GdFO) MNPs is exemplified in our prior work . Therefore, we worked on the 7% Gd-doped Fe 3 O 4 system for the capture of dextran and chitosan.…”

Section: Materials and Experimental Techniquementioning

confidence: 99%

“…Henceforth, a strong demand exists for methods that produce MNPs via clear, colloidally stable, simple, and efficient contenders for magnetic hyperthermia (MH) application. The study is a continuation of our prior work, where we explored the role of Gd doping on Fe 3 O 4 MNPs to tune heating efficiency . Herein, with the aim of emerging an ideal nanotherapeutic agent that behaves as highly stable in physiological atmospheres, a dextran-coated Gd-doped Fe 3 O 4 (DGFO) and chitosan-coated Gd-doped Fe 3 O 4 (CGFO) system (Figure ) have been synthesized.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Controlled Dipolar Interaction for Polymer-Coated Gd-Doped Magnetite Nanoparticles toward Magnetic Hyperthermia Application

Hazarika,

Borgohain,

Borah

2024

ACS Omega

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To maximize heat release from immobilized nanoparticles (NPs), a detailed understanding of the controlled dipolar interaction is essential for challenging magnetic hyperthermia (MH) therapies. To design optimal MH experiments, it is necessary to precisely determine magnetic states impacted by the inevitable concurrence of magnetic interactions under a common experimental form. In this work, we describe how the presence of dipolar interaction significantly alters the heating mechanism of host materials when NPs are embedded in them for MH applications. The concentration of the NPs and the intensity of their interaction can profoundly impact the amplitude and shape of the heating curves of the host material. The heating capability of interacting NPs might be enhanced or diminished, depending on their concentration within the host material. We propose chitosan-and dextran-coated Gd-doped Fe 3 O 4 NPs directing dipole interactions effective for the linear regime to enlighten the pragmatic trends. The outcomes of our study may have substantial implications for cancer therapy and could inspire novel approaches for maximizing the effectiveness of MH.

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Section: Structure and Morphology Studysupporting

confidence: 51%

Section: Resultsmentioning

confidence: 90%

Section: Preparation Of the Mnpsmentioning

confidence: 99%

Section: Materials and Experimental Techniquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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