Ag, Cu, and Se-doped ultrasmall iron oxide colloidal gels: Revealing potential for photo/electrochemical applications DOI Creative Commons
Olena Ivashchenko, Artur Jędrzak, Andrii Lys

et al.

Applied Surface Science, Journal Year: 2024, Volume and Issue: 673, P. 160916 - 160916

Published: Aug. 6, 2024

Synthesis and application of stable nanofluids are great interest due to their self-assembly ability collective behaviours that can influence optical, electrical, catalytic, mechanical responses. We report on the one-step synthesis colloidal gels designed with a sustainable chemistry approach, using low-toxic metal salts non-toxic heteropolysaccharide as reactants water medium. Monodisperse ultrasmall iron oxide (USIO) (2 nm in size) dopants (Ag, Cu Se) constitute colloids. This study explores main physical–chemical aspects these colloids, such rheological, magnetic, general structure, focusing potential applications electrocatalysis photocatalysis. Rheological measurements indicate non-Newtonian shear-thinning viscoelastic behaviour, characteristic weak gel systems. Doping Ag, Cu, Se increases viscosity by an order magnitude, promoting gelation structuring processes Moreover, adding significantly improved plasmon properties fluorescence intensity. Microstructural investigations revealed well-ordered microstructure combines tubular layered features reveals multi-level complexity. Among doped variants, Cu-doped USIO colloid shows most promising electrocatalytic photocatalytic performance, indicating versatile platforms for multiple areas, including biosensor solar energy conversion applications.

Language: Английский

Ag, Cu, and Se-doped ultrasmall iron oxide colloidal gels: Revealing potential for photo/electrochemical applications DOI Creative Commons
Olena Ivashchenko, Artur Jędrzak, Andrii Lys

et al.

Applied Surface Science, Journal Year: 2024, Volume and Issue: 673, P. 160916 - 160916

Published: Aug. 6, 2024

Synthesis and application of stable nanofluids are great interest due to their self-assembly ability collective behaviours that can influence optical, electrical, catalytic, mechanical responses. We report on the one-step synthesis colloidal gels designed with a sustainable chemistry approach, using low-toxic metal salts non-toxic heteropolysaccharide as reactants water medium. Monodisperse ultrasmall iron oxide (USIO) (2 nm in size) dopants (Ag, Cu Se) constitute colloids. This study explores main physical–chemical aspects these colloids, such rheological, magnetic, general structure, focusing potential applications electrocatalysis photocatalysis. Rheological measurements indicate non-Newtonian shear-thinning viscoelastic behaviour, characteristic weak gel systems. Doping Ag, Cu, Se increases viscosity by an order magnitude, promoting gelation structuring processes Moreover, adding significantly improved plasmon properties fluorescence intensity. Microstructural investigations revealed well-ordered microstructure combines tubular layered features reveals multi-level complexity. Among doped variants, Cu-doped USIO colloid shows most promising electrocatalytic photocatalytic performance, indicating versatile platforms for multiple areas, including biosensor solar energy conversion applications.

Language: Английский

Citations

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