Fig. 5From: Fabrication of CdTe QDs/BiOI-Promoted TiO2 Hollow Microspheres with Superior Photocatalytic Performance Under Simulated Sunlighta XPS scanning spectrum of the samples of TiO2, TiO2/CdTe, TiO2/CdTe/BiOI. b–d High-resolution XPS spectra of Ti, O, and TeBack to article page