武汉理工大学学报-材料科学版(英文版),
2015, (5): 928-934.
doi: 10.1007/s11595-015-1252-0
LIU Li
1,
, GUO Dongmei
2,
, CUI Wenquan
3,
, HU Jinshan
4,
, LIANG Yinghua
5,
1.College of Chemical Engineering, North China University of Science and Technology, Tangshan 063009, China; Hebei Province Petrochemical Construction Engineering Quality Supervision Station, Shijiazhuang 050051, China
2.College of Chemical Engineering, North China University of Science and Technology, Tangshan 063009, China; Hebei Province Petrochemical Construction Engineering Quality Supervision Station, Shijiazhuang 050051, China
3.College of Chemical Engineering, North China University of Science and Technology, Tangshan 063009, China; Hebei Province Petrochemical Construction Engineering Quality Supervision Station, Shijiazhuang 050051, China
4.College of Chemical Engineering, North China University of Science and Technology, Tangshan 063009, China; Hebei Province Petrochemical Construction Engineering Quality Supervision Station, Shijiazhuang 050051, China
5.College of Chemical Engineering, North China University of Science and Technology, Tangshan 063009, China; Hebei Province Petrochemical Construction Engineering Quality Supervision Station, Shijiazhuang 050051, China
基金项目:
Hebei Natural Science Funds for Distinguished Young Scholar(B2014209304)
Hebei Provincial Foundation for International Cooperation(15391403D)
the National Natural Science Foundation of China(.51202056,51372068)
Hebei Natural Science Funds for the Joint Research of Iron and Steel(B2014209314)
Photocatalytic Hydrogen Evolution from the Splitting of Water over Cd1-xZnxS/K2La2Ti3O10Composites under Visible Light Irradiation
Keywords：
Cd1-xZnxS/K2La2Ti3O10 composites
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 photo-generated electrons and holes.
