Fig. 7From: S-Doped Sb2O3 Nanocrystal: an Efficient Visible-Light Catalyst for Organic Degradationa Temporal changes of 4-phenylazophenol concentration as monitored by the UV–vis absorption spectra at 347 nm on Sb2O3-S-12. b Temporal absorption spectral patterns of 4-phenylazophenol during the photodegradation process over Sb2O3-S-12Back to article page