Photocatalytic Hydrogen Evolution over Cr³⁺Doped Porous CdIn₂S₄ Photocatalysts under Visible Light Irradiation

Abstract:

A series of Cr³⁺doped porous CdIn₂S₄ photocatalysts with good optical property were synthesized via a facile hydrothermal process using sodium dodecyl sulfate (SDS) as template. The above-prepared photocatalysts were characterized by XRD, field emission scanning electron microscopy (FESEM), UV-Vis diffusive reflectance spectroscopy (DRS) and XPS. The influences of Cr³⁺ doping concentration on the morphology and photocatalytic activity of CdIn₂S₄ photocatalysts were investigated. The results demonstrated that the presence of Cr³⁺ doping in the CdIn₂S₄ photocatalyst had significantly influence on the crystal structure, micro-morphology, e^--h⁺ recombination and photocatalytic activity. The photocatalytic hydrogen evolution of CdIn₂S₄ was enhanced by doping, and the highest rate of hydrogen evolution of 758.8 μmol/(h·g) over Cr³⁺(0.5%)-CdIn₂S₄ was observed.

• Periodical: Advanced Materials Research (Volume 486)
• Pages: 181-186
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.486.181
• Online since: March 2012
• Authors: Xue Feng Bai, Jin Shu Li
• Keywords: CdIn₂S₄, Cr³⁺ Doping, Hydrothermal, Photocatalytic

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