Fig. 2: Formation mechanism study of MSbNSs.
From: Degradable mesoporous semimetal antimony nanospheres for near-infrared II multimodal theranostics
a XRD patterns, b XPS analysis of MSbNSs-1/2/3/4. c Step-oxidization reaction mechanism of MSbNSs. d FTIR spectra of MSbNSs-1/2/3/4. e EDS mapping of MSbNSs-3. f The change of residual ratios of O and S elements in MSbNSs-1/2/3/4, respectively. Experiments above were performed three times with similar results.
