Research Article
Rapid Colorimetric Detection of Hg (II) Based on Hg (II)-Induced Suppressed Enzyme-Like Reduction of 4-Nitrophenol by Au@ZnO/Fe3O4 in a Cosmetic Skin Product
Figure 4
XPS spectra of Au@ZnO/Fe3O4 (a) before and (b) after interaction with Hg2+.
(a) |
(b) |