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| Facile Synthesis and Photocatalytic Activity for Hydrogen Evolution of Ag2O/TiO2 |
| Author Name | Affiliation | E-mail | | ZHAO Zhi-Hao | Department of Materials Science, Fudan University, Shanghai 200433, China | | | Lee Jordan | Department of Materials Science, Fudan University, Shanghai 200433, China | | | CHEN Yang | Department of Materials Science, Fudan University, Shanghai 200433, China | | | CUI Xiao-Li | Department of Materials Science, Fudan University, Shanghai 200433, China | xiaolicui@fudan.edu.cn |
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| Abstract: 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. |
| Keywords: flame thermal method Ag2O TiO2 photocatalysis hydrogen evolution |
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| 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. |
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