“…For Au/Ga 2 O 3 photocatalysts prepared by PF, BH and H 2 methods, the binding energies were 531.0 and 532.3 eV, 531.0 and 532.5 eV, 531.5 and 532.9 eV, respectively. The O V /O L ratio was estimated from peak areas, 45,46 and the value obtained for the b-Ga 2 O 3 material was 0.14. For Au/Ga 2 O 3 photocatalysts prepared by PF, BH and H 2 methods the values were 0.17, 0.10 and 0.12, respectively.…”