Skip to main content
. 2018 May 17;9(24):5427–5434. doi: 10.1039/c8sc00490k

Fig. 3. (a) XPS spectra of UCNPs, MnO2 and UCNPs@MnO2. (b) High resolution Mn (2p) XPS spectra of UCNPs, MnO2 and UCNPs@MnO2. (c) XRD spectra of UCNPs and UCNPs@MnO2. (d) FT-IR spectra of MnO2, UCNPs, and UCNPs@MnO2 at different oxidation times (12 h and 24 h).

Fig. 3