Figure 5.
(a) The photocatalytic mechanism of Fe3O4@TiO2@Au nanocomposites; (b) Absorption spectra of Fe3O4@TiO2@Au, Fe3O4@TiO2@Au@4MBA, Fe3O4@TiO2@Au@4MBA@antibody, and Fe3O4@TiO2@Au recovered by UV irradiation after immunoassay.
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