Research Article
Facile Preparation of Efficient WO3 Photocatalysts Based on Surface Modification
Figure 2
(a) W 4f core-level spectra, (b) O 1s core-level spectra, (c) Cu 2p core-level spectra, and (d) Ti 2p core-level spectra of bare WO3, Cu(II)-WO3, and Cu(II)-WO3/TiO2, respectively.
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