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- W2025105182 abstract "A chitosan (CS)/uricase (UOx)–poly(furan-3-boronic acid) (PFBA)–Pd nanoparticles (PdNPs)/plated Pd (Pdplate)/multiwalled carbon nanotubes (MWCNTs)/Au electrode was prepared for fabricating an amperometric biosensor and a biofuel cell (BFC) of uric acid (UA). Briefly, Pd was electroplated on a MWCNTs-modified Au electrode, the UOx–PFBA–PdNPs bionanocomposite was prepared on the Pdplate/MWCNTs/Au electrode through chemical oxidation of a UOx-furan-3-boronic acid adduct by Na2PdCl4, and then chitosan (CS) was cast-coated on the electrode. In the first-generation biosensing mode (anodic detection of enzymatically generated H2O2), the prepared CS/UOx–PFBA–PdNPs/Pdplate/MWCNTs/Au electrode showed a linear amperometric response to UA concentration from 1.0 μM to 2.5 mM with a sensitivity of 490 μA mM−1 cm−2 and a limit of detection (S/N = 3) of 0.1 μM, excellent operation/storage stability, and good results of UA assay in real urine samples. The enzyme electrode also worked well in the second-generation biosensing mode involving a p-benzoquinone or ferrocene monocarboxylic acid mediator. Furthermore, a monopolar UA BFC was fabricated by using the enzyme electrode as the bioanode and a Pt/MWCNTs/Au electrode as the cathode, which gave an open-circuit cell voltage of 0.394 V, a short-circuit current density of 857 μA cm−2 and a maximum power density of 70 μW cm−2 at 0.22 V under simulated physiological conditions." @default.
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- W2025105182 date "2015-02-01" @default.
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- W2025105182 title "An amperometric biosensor and a biofuel cell of uric acid based on a chitosan/uricase–poly(furan-3-boronic acid)–Pd nanoparticles/plated Pd/multiwalled carbon nanotubes/Au electrode" @default.
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- W2025105182 doi "https://doi.org/10.1016/j.jelechem.2014.12.032" @default.
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