Co掺杂提高ZnIn2S4光催化剂可见光下的产氢性能

doi:10.3866/PKU.WHXB201210093

Abstract

Abstract:

A series of Co-doped ZnIn₂S₄ photocatalysts were prepared via a solvothermal synthesis method. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and UV-visible (UV-Vis) diffuse reflectance spectroscopy. The results indicated that the Co was successfully incorporated into the ZnIn₂S₄ lattice as confirmed by XRD and XPS. With increasing Co concentration, the absorption edge of the samples shifted to longer wavelength, while the morphology of ZnIn₂S₄ was gradually destroyed. Photocatalytic results demonstrated that Co²⁺ doping could greatly enhance the photocatalytic activity of ZnIn₂S₄. The optimal amount of Co doping for the ZnIn2S4 photocatalyst was 0.3%(w), which displayed the highest photocatalytic activity. The possible photocatalytic mechanism was discussed.

Key words: Photocatalyst, Doping, Visible light, Hydrogen generation, Water splitting

YUAN Wen-Hui, LIU Xiao-Chen, LI Li. Improving Photocatalytic Performance for Hydrogen Generation over Co-Doped ZnIn₂S₄ under Visible Light[J]. Acta Phys. -Chim. Sin. 2013, 29(01), 151-156. doi: 10.3866/PKU.WHXB201210093

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Improving Photocatalytic Performance for Hydrogen Generation over Co-Doped ZnIn₂S₄ under Visible Light

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Improving Photocatalytic Performance for Hydrogen Generation over Co-Doped ZnIn₂S₄ under Visible Light