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Well oil-dispersible SrF 2 :Yb 3+ /Er 3+ upconversion (UC) nanocrystals (NCs) were easily synthesized in the water–ethanol–oleic acid–sodium oleate complex systems. The as-prepared NCs all show size-uniformity, and their sizes, morphologies can be controlled by varying the solvent and reaction time, and rectangular SrF 2 :Yb 3+ /Er 3+ nanosheets with...
AuNP-modified CeO2 nanomaterials with three different morphologies were prepared and their antioxidant abilities were evaluated by the UV method; then, the mechanism of the effect of AuNPs was further explored. It was found that AuNPs’ effect on the antioxidant properties of CeO2 varied with different morphologies and sample concentrations. At lower concentrations, AuNPs improved the antioxidant abilities...
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