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Characterization of ZnO and CAZ NPs. (a–b) TEM images, (c–d) HRTEM images, (e) XRD patterns, (f) the XPS survey spectrum of ZnO and CAZ NPs, (g) XPS spectra of Zn 2p region, (h) O1s region, (i) Ag 3 d region. (j) And Cu 2p region. (ki-kv) Elemental mapping of the CAZ NPs (scale bar: 200 nm).
