1. Enhanced Hydrogen Production over C-Doped CdO Photocatalyst in Na2S/Na2SO3 Solution under Visible Light Irradiation.
- Author
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Quan Gu, Huaqiang Zhuang, Jinlin Long, Xiaohan An, Huan Lin, Huaxiang Lin, and Xuxu Wang
- Subjects
HYDROGEN production ,CARBON ,DOPED semiconductors ,CADMIUM oxide ,PHOTOCATALYSIS ,SCANNING electron microscopy ,ULTRAVIOLET radiation ,SODIUM compounds ,LIGHT absorption - Abstract
The C-doped CdO photocatalysts were simply prepared by high-temperature solid-state process. The as-prepared photocatalysts were characterized by X-ray powder diffraction (XRD), diffuse reflectance spectroscopy (UV-Vis DRS), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The results demonstrated that the carbon was doped into CdO, resulting in the red-shift of the optical absorption of CdO. The photocatalytic behavior of CdO and C-doped CdO was evaluated under the visible light irradiation by using the photocatalytic hydrogen evolution as a model reaction. The C-doped CdO photocatalysts had higher photocatalytic activity over parent CdO under visible light irradiation. The results indicated that the H
2 production was due to the existence of CdS and the enhancement of visible light photocatalytic activity of H2 production was originated from the doping of carbon into the CdO lattice. The probably reaction mechanism was also discussed and proposed. [ABSTRACT FROM AUTHOR]- Published
- 2012
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