Figure 5From: Controlled fabrication of Sn/TiO2 nanorods for photoelectrochemical water splittingXPS survey spectra. (a) Low-resolution XPS survey spectra of the pristine TiO2 NRs and Sn/TiO2 NRs with different Sn doping, (b) Ti 2p XPS spectra, (c) O 1 s XPS spectra; (d) Sn 3d XPS spectra.Back to article page