Author/Authors :
Liu، نويسنده , , Zhifeng and Wang، نويسنده , , Yun and Wang، نويسنده , , Bo and Li، نويسنده , , Yabin and Liu، نويسنده , , Zhichao and Han، نويسنده , , Jianhua and Guo، نويسنده , , Keying and Li، نويسنده , , Yajun and Cui، نويسنده , , Ting and Han، نويسنده , , Li and Liu، نويسنده , , Cuiping and Li، نويسنده , , Gangmin، نويسنده ,
Abstract :
The gradient PEC electrodes of ZnO nanorods sensitized by CdS with different size were fabricated via successive ionic layer adsorption and reaction (SILAR) method and applied in photochemical water splitting. The concentrations of reaction solution and SILAR cycles were investigated in the synthetic process and the working mechanism of the gradient PEC electrode was suggested. The results showed that the hydrogen generation efficiency of 4.88% was achieved for the ZnO/CdS gradient PEC electrode constructed by decreasing of the CdS quantum dots size on ZnO nanorods due to the improved absorption and appropriate energy gap structure, which was confirmed by enhanced absorption spectrum. The expected products have potential application in photoelectrochemical water splitting.
Keywords :
ZNO , CDS , Electrode , Gradient , ABSORPTION , Water splitting
