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- W2912042799 abstract "This study addresses the fabrication of monodispersed iron-doped silver meso-hierarchical flower-like structures via a facile chemical procedure. The morphology of the obtained silver particles has been tuned by changing the concentration of the structure-directing agent (malonic acid). Ball-shaped silver particles were formed in the absence of malonic acid (MA), while silver particles with craspedia-globosa, chrysanthemum, and dahlia flower-like structures were obtained in the presence of 0.2, 0.5, and 1 mM malonic acid, respectively. The doping of these dahlia flower-like structures with trace amounts of iron (≤5% Fe weight percent) led to the formation of globe-amaranth iron-doped microflowers (AgFeamaranth). The as-prepared AgFeamaranth exhibited better performance as a nonenzymatic H2O2 sensor compared to undoped silver particles as demonstrated by their higher catalytic activity and stability together with superior sensitivity (1350 μM–1 cm–2, 61 times higher) and lower detection limit (0.1 μM). These enhancements are attributed to the AgFe unique flower-like structures and to the fact that the iron dopants provide a higher number of electroactive sites and reduce the charge transfer resistance of H2O2 reduction. Additionally, the good stability of AgFe is believed to originate from the faster detachment rate of the in situ-formed gas bubbles from their surfaces compared to undoped silver structures." @default.
- W2912042799 created "2019-02-21" @default.
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- W2912042799 date "2019-01-23" @default.
- W2912042799 modified "2023-09-27" @default.
- W2912042799 title "Silver–Iron Hierarchical Microflowers for Highly Efficient H<sub>2</sub>O<sub>2</sub> Nonenzymatic Amperometric Detection" @default.
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- W2912042799 doi "https://doi.org/10.1021/acssuschemeng.8b06182" @default.
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