Citation: ZHOU Li, LIU Huan-Huan, YANG Yu-Lin, QIANG Liang-Sheng. Preparation and Performance of a SILAR TiO₂/CdS/Co-Pi Water Oxidation Photoanode[J]. Acta Physico-Chimica Sinica, ;2016, 32(11): 2731-2736. doi: 10.3866/PKU.WHXB201608232 shu

Preparation and Performance of a SILAR TiO₂/CdS/Co-Pi Water Oxidation Photoanode

School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China

Received Date: 31 May 2016
Revised Date: 15 August 2016

Fund Project: The project was supported by the Heilongjiang Postdoctoral Fund, China (LBH-Z14106) and Program for Innovation Research of Science in Harbin Institute of Technology, China (Q201508).

Asemiconductor heterostructure of TiO₂/CdS/cobalt phosphate water oxidation catalyst (Co-Pi WOC) photoanode was fabricated by the successive ionic layer adsorption and reaction (SILAR) procedure and photoassisted electro-deposition. The structure, morphologys and magnetic properties of the resultant particles were characterized using X-ray diffraction (XRD), scanning electron microscope (SEM), and X-ray photoelectron spectroscopy (XPS). CdS and Co-Pi quantum dots loaded on to the TiO₂ nanofilm. The TiO₂/CdS/Co-Pi photoanode had an initial photocurrent of 1.3 mA·cm^-2 and a stable level of 0.5 mA·cm^-2. A relatively stable level was maintained under visible light irradiation in neutral solution, especially at the low bias voltage of 0 V (vs Ag/AgCl). In this system, CdS quantum dots serve as the light absorber and generate electron holes; the Co-Pi WOC acts as a hole transfer layer that can transfer the hole for water oxidation; and the TiO₂ is the electron conductor for efficient charge transfer to the cathode to actualize proton reduction.
- Photocatalysis,
- Water oxidation,
- Successive ionic layer adsorption and reaction,
- Visible light,
- TiO₂/CdS/Co-Pi photoanode
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通讯作者: 陈斌, bchen63@163.com

Preparation and Performance of a SILAR TiO₂/CdS/Co-Pi Water Oxidation Photoanode