| 초록 |
Semiconductor-based photocatalysts for solar H2 generation have attracted considerable attention for their great potential for inexpensive and clean H2 production. In this study, we prepared a core–shell structured Au@CdS on TiO2 nanofibers (Au@CdS/TNF) and investigated its photocatalytic H2 production under visible (λ > 420 nm) irradiation. Compared with CdS/TNF and Au/CdS/TNF, the Au@CdS/TNF exhibited strongly enhanced H2 production under visible irradiation. These results can be attributed to the synergistic effect of the compact structure of Au@CdS and TNF in the core-shell structure. Au@CdS of the core-shell structure can suppress the formation of CdSO4 from CdS, and the Au core can transfer electrons from CdS to TiO2 without shielding effect of light absorption by CdS. This study shows the synergistic effect of a TiO2-based photocatalyst for improving solar hydrogen production efficiency. |
