Photothermal Evaluation of Aqueous Magnetite Nanodispersions: Accuracy, Precision, and Limitations.

ABSTRACT: The thermal and optical properties of aqueous dispersions of magnetite nanoparticles were studied by dual-beam thermal-lens spectrometry. Surface-modified magnetite nanoparticles with an average crystal size of 7.5 nm were synthesized by a simple, one-stage method of coprecipitation followed by surface functionalization. For this purpose, the most popular and promising modifiers based on surfactants, polyelectrolytes, biopolymers and organic acids were used. The effect of the concentration of nanoparticles (in the range from 0.01 to 5 mg/L) and the nature of the surface modifier on the thermal diffusivity of the dispersion was studied. It was found that at concentrations of 0.4-0.6 mg/L, the dispersions exhibit heat-accumulating properties, which may be promising in the development of a ma

SUBMITTER: Khabibullin VR 

PROVIDER: S-EPMC12565839 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature