Citation: ZHAO Zhi-Hao, Lee Jordan, CHEN Yang, CUI Xiao-Li. Facile Synthesis and Photocatalytic Activity for Hydrogen Evolution of Ag₂O/TiO₂[J]. Chinese Journal of Inorganic Chemistry, ;2017, 33(5): 738-744. doi: 10.11862/CJIC.2017.098 shu

Facile Synthesis and Photocatalytic Activity for Hydrogen Evolution of Ag₂O/TiO₂

Department of Materials Science, Fudan University, Shanghai 200433, China

Corresponding author: CUI Xiao-Li, xiaolicui@fudan.edu.cn
Received Date: 30 November 2016
Revised Date: 16 March 2017

Figures(8)

The Ag₂O/TiO₂ composite was synthesized via a facile flame thermal method using tetrabutyl orthotitanate and AgNO₃ as precursors. The samples were characterized with X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible diffuse reflectance spectroscope (UV-Vis DRS) and photocatalytic hydrogen evolution under UV-Vis light irradiation. XRD results showed that anatase TiO₂ was obtained directly and no obvious effect on the crystal structure was observed with the introduction of desired amount of Ag. SEM images show microspherical morphology for the as-synthesized samples without Ag and irregular morphology for those with higher content of Ag. XPS and chemical precipitation method results indicated that Ag existed in the forms of Ag₂O in the resulted samples. UV-Vis DRS showed that the introduction of Ag could enhance light absorption. The highest photocatalytic hydrogen generation rate of sample was about 15 times as high as that of P25. The sample after photocatalytic reaction was chemically analyzed and it is assumed that the Ag₂O was partly photoreduced to Ag, which further benefits the photocatalytic hydrogen production from Ag/TiO₂ heterostructures.
- flame thermal method,
- Ag₂O,
- TiO₂,
- photocatalysis,
- hydrogen evolution
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Facile Synthesis and Photocatalytic Activity for Hydrogen Evolution of Ag₂O/TiO₂