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surfaces for enhancing photocatalytic hydrogen evolution. Adv Funct Mater 27:1702624
16. Qian J, Liu P, Xiao Y et al (2009) TiO 2 -Coated multilayered SnO 2 hollow microspheres for
dye-sensitized solar cells. Adv Mater 21:3663–3667
17. Chen X, Ye J, Ouyang S et al (2011) Enhanced incident photon-to-electron conversion
efficiency of tungsten trioxide photoanodes based on 3D-photonic crystal design. ACS Nano
5:4310–4318
18. Qi DY, Lu LJ, Xi ZH et al (2014) Enhanced photocatalytic performance of TiO 2 based on
synergistic effect of Ti3+ self-doping and slow light effect. Appl Catal B Environ
160–161:621–628
19. Dinh CT, Yen H, Kleitz F et al (2014) Three-dimensional ordered assembly of thin-shell
Au/TiO 2 hollow nanospheres for enhanced visible-light-driven photocatalysis. Angew Chem
Int Ed 53:6618–6623
240
9 Hollow or Yolk–Shell-Type Photocatalyst