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Ag-AgBr/TiO_2光催化剂的制备及其降解染料的研究 被引量：5

Preparation of Ag-AgBr/TiO_2 Photocatalysts and Study on Their Photocatalytic Degradation of Dyes
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摘要 采用简单的沉积沉淀法制备了Ag-Ag Br/Ti O2复合光催化剂.通过粉末X射线衍射和紫外-可见漫反射表征了催化剂的结构和光学性质.进而,使用X射线光电子能谱验证了Ag-Ag Br/Ti O2表面的Ag物种以Ag(0)和Ag(I)形式存在.研究表明分别在可见光和紫外光照射下液相降解罗丹明B,与单独的Ti O2相比,Ag-Ag Br/Ti O2有更高的光催化活性.此外,还研究了在光催化过程中电子的传输路径.基于表征结果和光催化活性,观察到和讨论了Ag-Ag Br和Ti O2的协同作用. The composites of Ag-Ag Br/Ti O2 photocatalyst have been prepared by a simple deposition-precipitation method.Their structure and optical properties have been characterized by X-ray diffraction（XRD） and UV-vis diffuse reflectance spectra（UV-vis DRS）. In addition, the presence of surface Ag species existed as Ag（0） and Ag（I） in Ag-Ag Br/Ti O2 is confirmed by the analysis of X-ray photoelectron spectroscopy（XPS）. It is found that the Ag-Ag Br/Ti O2 composite exhibits the enhanced photocatalytic activity toward degradation of Rhodamine B（Rh B） in water as compared to the bare Ti O2 under both visible and UV light irradiation. Besides, the transfer of electron has been investigated. Synergetic effects between AgAg Br and Ti O2 have been observed and discussed for degradation of Rh B on the basis of joint results of characterization and photocatalytic activity.
作者 张燕辉
机构地区 闽南师范大学化学与环境学院
出处 《闽南师范大学学报（自然科学版）》 2015年第3期53-58,共6页 Journal of Minnan Normal University：Natural Science
基金 闽南师范大学杰出青年科研人才培育计划(MJ14004) 闽南师范大学科研启动基金
关键词 TIO2 Ag-AgBr 光催化 协同作用 降解染料 TiO2 Ag-AgBr photocatalysis synergetic effect degradation of dyes
分类号 O643.3 [理学—物理化学]
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参考文献25

  • 1Zheng X Z, Meng S G, Chen J, et al. Titanium dioxide photonlc crystals with enhanced photocatalytic activity: matching photonie band gaps of TiO: to the absorption peaks of dyes[J]. J. Phys. Chem. C, 2013, 117(41): 21263-21273.
  • 2Zhang Y H, Zhang N, Tang Z-R, et al. Graphene transforms wide band gap ZnS to a visible light photocatalyst. The new role of graphene as a macromolecular photosensitizer[J]. ACS Nano, 2012, 6(11): 9777-9789.
  • 3Zhang Y H, Tang Z-R, Fu X Z, et al. Engineering the unique 2D mat of grpahene to achieve graphene-TiO2 nanocomposie for photoeatalytic selective transformatiom What advantage does graphene have over its forebear carbon nanotube[J]. ACS Nano, 2011, 5(9): 7426-7435.
  • 4Zhang Y H, Tang Z-R, Fu X Z, et al. TiO,.-graphene nanocomposites for gas-phase photocatalytic degradation of volatile aromatic pollutant: Is TiO2-graphene truly different from other TiO2-carbon composite materials[J]. ACS Nano, 2010, 4(12): 7303-7314.
  • 5Diebold U. The surface science of titanium dioxide[J]. Surf. Sci. Rep., 2003, 48 (5-8): 53-229.
  • 6Kubacka A, Fernandez-Garcia M, Colon G. Advanced nanoarchitectures for solar photocatalytic applications[J]. Chem. Rev., 2011, 112(3): 1555-1614.
  • 7Dahl M, Liu Y D, Yin Y D. Composite Titanium Dioxide Nanomaterials[J]. Chem. Rev., 2014, 114(19): 9853-9889.
  • 8王欢,崔文权,韩炳旭,梁英华.Ag/AgX(X=Cl,Br,I)等离子共振光催化剂的研究进展[J].化工进展,2013,32(2):346-351. 被引量：19
  • 9Wang P, Huang B B, Qin X Y, et al. Ag@AgCI: A highly etlqcient and stable photocatalyst active under visible light[J]. Angew. Chem. Int. Ed., 2008, 47(41): 7931-7933.
  • 10Wang P, Huang B B, Zheng X Y, et al. Highly efficient visible-light plasmonic photocatalyst Ag@AgBr[J]. Chem. Eur. J., 2009, 15(8): 1821-1824.

二级参考文献59

  • 1程萍,顾明元,金燕苹.TiO_2光催化剂可见光化研究进展[J].化学进展,2005,17(1):8-14. 被引量：108
  • 2唐玉朝,胡春,王怡中,张海平,黄显怀.TiO_2光催化剂失活机理研究进展[J].化学进展,2005,17(2):225-232. 被引量：19
  • 3赵春,钟顺和.V_2O_5-TiO_2复合半导体光催化材料结构及光响应性能研究[J].无机化学学报,2006,22(2):238-242. 被引量：20
  • 4刘亚琴,徐耀,李志杰,张秀萍,吴东,孙予罕.CO_2在纳米SiO_2/TiO_2悬浮体系中的光催化还原[J].化学学报,2006,64(6):453-457. 被引量：22
  • 5Fujishima A,Honda K.Electrochemical photolysis of water at a semiconductor electrode[J].Nature,1972,238 (5358):37-38.
  • 6He C,Yu Y,Hu X F,et al.Influence of silver doping on the photocatalytic activity of titania films[J].Applied Surface Science,2002,200 (1-4):239-247.
  • 7Xu A W,Gao Y,Liu H Q.The Preparation,characterization,and their photocatalytic activities of rare-earth-doped TiO2 nanoparticles[J].Journal of Catalysis,2002,207 (2):151-157.
  • 8Zhang Y H,Zhang H X,Xu Y X,et al.Significant effect of lanthanide doping on the texture and properties of nanocrystalline mesoporous TiO2[J].Journal of Solid State Chemmistry,2004,177(10):3490-3498.
  • 9Mrowetz M,Balcerski W,Colussi A J.Oxidative power of nitrogen-doped TiO2 photocatalysts under visible illumination[J].Journal of Physical Chemistry B,2004,108 (45):17269-17273.
  • 10Arabatzis I M,Stergiopoulos T,Bernard M C,et al.Silver-modified titanium dioxide thin films for efficient photodegradation of methyl orange[J].Applied Catalysis B,2003,42 (2):187-201.

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闽南师范大学学报（自然科学版）
2015年 第3期

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