Fig. 7From: Regulating the surface of anion-doped TiO2 nanorods by hydrogen annealing for superior photoelectrochemical water oxidationa XRD spectra of the S, N doped TiO2 nanorod arrays annealed under ambient air and H2 atmosphere at 350 °C. b O 1 s XPS spectra of the optimum and reference samples. c Comparison chart including the Peak volume ratio between the S–O and Ov and Ti–O bonding peak and the dopant concentration for the optimum and reference samplesBack to article page