Research Article
Noble Metal Decoration and Presulfation on TiO2: Increased Photocatalytic Activity and Efficient Esterification of n-Butanol with Citric Acid
Figure 5
XPS (a) spectra of samples, (b) O 1s, Ti 2p, and S 2p peaks of /M-TiO2 samples, (c) Ag 3d spectra of /Ag-TiO2 sample, (d) Au 4f 3d spectra of /Au-TiO2 sample, (e) Rh 3d spectra of /Rh-TiO2 sample, and (f) Pt 4f spectra of /Pt-TiO2 sample.
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