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- W2005992071 abstract "Three types of colloidal systems based on CeO2−x, GdYVO4:Eu3+ and CePO4:Tb3+ are compared in this work. Nanoparticles with diameter 1.9 ± 0.3 nm were stabilized by sodium citrate. Ultramicroheterogeneous dispersion in water was found to be a typical hydrophobic colloidal system with negatively charged particles surface. CeO2−x colloidal solutions were chosen as a model system. Using coagulation by inorganic electrolytes, it was shown, that both individual nanoparticles and their agglomerates, which remain in a dynamic equilibrium of agglomerization-peptization, can be present in solutions. The reaction of the autoxidation of epinephrine to adrenochrome was used in order to determine the ability of nanoparticles to inactivate superoxide radicals. Superoxide dismutase (SOD) activity of CeO2−x nanoparticles increases during the decay of agglomerates in solution. Nanoparticles GdYVO4: Eu3+ as well as CeO2−x exhibit SOD mimetic activity." @default.
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- W2005992071 date "2012-09-01" @default.
- W2005992071 modified "2023-10-13" @default.
- W2005992071 title "The influence of agglomeration of nanoparticles on their superoxide dismutase-mimetic activity" @default.
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- W2005992071 doi "https://doi.org/10.1016/j.colsurfa.2012.06.019" @default.
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