Photocatalytic Hydrogen Evolution from the Splitting of Water over Cd1-xZnxS/K2La2Ti3O10 Composites under Visible Light Irradiation
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2015年第5期
论文作者：刘利 GUO Dongmei 崔文权 HU Jinshan 梁英华
文章页码：928 - 934
摘 要：A series of Cd1-xZnxS/K2La2Ti3O10 composites were synthesized via a simple co-precipitation method. The prepared samples were characterized by X-ray diffraction（XRD）, scanning electron microscopy（SEM）, X-ray energy dispersive spectroscopy（EDX）, ultraviolet-visible diffuse reflection（UV-Vis）, X-ray photoelectron spectroscopy（XPS） and photoluminescence（PL） measurements. The composite structures consisted of Cd1-xZnxS nanoparticles evenly distributed on the surface of K2La2Ti3O10. The absorption edge of K2La2Ti3O10 shifted to the visible light region upon introduction of the Cd1-xZnxS nanoparticles. The photocatalytic activities of the catalysts were evaluated by hydrogen production under visible light irradiation. The prepared Cd0.8Zn0.2S（30wt%）/K2La2Ti3O10 exhibited higher photocatalytic activity, evolving 6.92 mmol/g H2 under visible light irradiation for 3 h. The promoted photocatalytic activity of the composites was attributed to the synergistic effect between Cd1-xZnxS and K2La2Ti3O10, which resulted in enhanced separation of photogenerated electrons and holes.
刘利，GUO Dongmei，崔文权，HU Jinshan，梁英华
College of Chemical Engineering, North China University of Science and TechnologyHebei Province Petrochemical Construction Engineering Quality Supervision Station
摘 要：A series of Cd1-xZnxS/K2La2Ti3O10 composites were synthesized via a simple co-precipitation method. The prepared samples were characterized by X-ray diffraction（XRD）, scanning electron microscopy（SEM）, X-ray energy dispersive spectroscopy（EDX）, ultraviolet-visible diffuse reflection（UV-Vis）, X-ray photoelectron spectroscopy（XPS） and photoluminescence（PL） measurements. The composite structures consisted of Cd1-xZnxS nanoparticles evenly distributed on the surface of K2La2Ti3O10. The absorption edge of K2La2Ti3O10 shifted to the visible light region upon introduction of the Cd1-xZnxS nanoparticles. The photocatalytic activities of the catalysts were evaluated by hydrogen production under visible light irradiation. The prepared Cd0.8Zn0.2S（30wt%）/K2La2Ti3O10 exhibited higher photocatalytic activity, evolving 6.92 mmol/g H2 under visible light irradiation for 3 h. The promoted photocatalytic activity of the composites was attributed to the synergistic effect between Cd1-xZnxS and K2La2Ti3O10, which resulted in enhanced separation of photogenerated electrons and holes.
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