fig10
Figure 10. (A) Schematic diagram of plasmonic energy upconversion in the NaYF4:Yb-Er NP/W18O49 NW heterostructure system upon irradiation at λ = 980 nm. (B) Amount of H2 production from AB aqueous solution under irradiation at λ = 980 nm: (1) no catalyst; (2) W18O49 NWs; and (3) NaYF4:Yb-Er NW@W18O49 NP heterostructures. (C) Amount of H2 production of W18O49 NWs in 1 h under irradiation at different incident light wavelengths. Reproduced from Ref.[85] with permission from Wiley.