Figure 2.

XPS spectra of the ZnO-Ag2O composites and pure ZnO. (a) Survey XPS spectrum, (b) Zn 2p, (c) O 1s, and (d) Ag 3d.

Xu et al. Nanoscale Research Letters 2013 8:536   doi:10.1186/1556-276X-8-536
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