The effect of Fe3O4 nanoparticles on structural, optical, and thermal properties MoS2 nanoflakes

• Published in: Journal of materials science. Materials in electronics 2022-11, Vol.33 (33), p.25153-25162
• Main Authors: Abareshi, Afsaneh, Salehi, Nasrin
• Format: Article
• Language: English
• Subjects: Biomedical materials; Characterization and Evaluation of Materials; Chemistry and Materials Science; Continuous wave lasers; Fourier transforms; High resolution electron microscopy; Iron oxides; Magnetic fields; Magnetic properties; Magnetic resonance imaging; Magnetic saturation; Magnetometers; Materials Science; Molybdenum disulfide; Nanocomposites; Nanoparticles; Near infrared radiation; Optical and Electronic Materials; Optical properties; Spectrometers; Thermodynamic properties; Water sampling
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-022-09220-7

Molybdenum disulfide (MoS 2 ), due to high surface area, excellent photothermal heat, and strong absorbance in near-infrared (NIR) region, is used extensively as a photothermal agent for biomedical applications. In this paper, we reported a nanoplatform based on MoS 2 nanoflakes decorated with super-paramagnetic iron oxide magnetic nanoparticle (Fe 3 O 4 ) (MoS 2 –Fe 3 O 4 nanocomposite) to increase emission photothermal heat of MoS 2 nanoflakes and it is used as a target moiety directed by external magnetic field to tumor site. Herein, samples were synthesized by using hydrothermal method and characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), Fourier transform infrared (FTIR), UV–Vis, and Raman spectroscopes. These characterizations confirmed that Fe 3 O 4 nanoparticles have been incorporated between MoS 2 nanoflakes successfully. Vibrating sample magnetometer (VSM) was used to see the magnetic characteristics of the samples. This characterization confirmed that the saturation magnetization ( M s ) of MoS 2 –Fe 3 O 4 nanocomposite is enough to separate magnetic nanocomposite quickly from the water sample with an external magnetic field. Finally, photothermal results of samples indicated that nanocomposite produced higher photothermal heat than MoS 2 and Fe 3 O 4 individual samples after 10-min laser irradiation (808 nm continuous wave laser, 1 W/cm 2 ). So, MoS 2 –Fe 3 O 4 nanocomposite can be applied as a suitable photothermal agent for further biological applications such as photothermal therapy, drug delivery, and magnetic resonance imaging (MRI).