以聚乙二醇PEG4000为模板剂,采用溶胶-凝胶法制备多孔钛酸锶光催化剂,研究PEG4000添加量对催化剂组成和性能的影响.结果表明:添加模板剂后样品的比表面积显著增大,钛酸锶的物相由Sr2TiO4转变成SrTiO3.随着模板剂添加量的增加,样品的颗粒粒径逐渐变小,SrTiO3相的晶粒尺寸也逐渐下降.当PEG4000的添加量为1.5g时,多孔样品由SrTiO3和SrCO3相组成,SrTiO3相的特征衍射峰强度最大,样品的光催化活性最强.当光催化时间为120min时,甲基橙在多孔样品上的降解率为97.9％,明显高于未添加PEG4000制备的样品.
参考文献
| [1] | Michael R. Hoffmann;Scot T. Martin;Wonyong Choi;Detlef W. Bahnemann .Environmental Applications of Semiconductor Photocatalysis[J].Chemical Reviews,1995(1):69-96. |
| [2] | Akira Fujishima;Tata N. Rao;Donald A. Tryk .Titanium dioxide photocatalysis[J].Journal of photochemistry and photobiology, C. Photochemistry reviews,2000(1):1-21. |
| [3] | Eng HW.;Barnes PW.;Auer BM.;Woodward PM. .Investigations of the electronic structure of d(0) transition metal oxides belonging to the perovskite family[J].International Journal of Quantum Chemistry,2003(1):94-109. |
| [4] | KATO H;KUDO A .Energy structure and photocatalytic activity for water splitting of Sr2 (Ta1-x Nbx)2O7 solid solution[J].Journal of Photochemistry and Photobiology A:Chemistry,2001,145(1-2):129-132. |
| [5] | SBAOLSKY E M;JMAE A R;KOWOM S et al.Piezoelectric porperties of (001) textured Pb(Mg1/3 Nb2/3) O3-PbTiO3[J].Applied Physics Letters,2001,78(17):2551-2553. |
| [6] | AKUTO K;SAKURAI Y .Photochargeable metal hydride/air battery[J].Journal of the Electrochemical Society,2001,148(02):121-125. |
| [7] | AVUDAITHAI M;KUTTY T R N .Ultrafine powders of SrTiO3 from the hydrothermal preparation and their catalytic activity in the photolysis of water[J].Materials Research Bulletin,1987,22(05):641-650. |
| [8] | Hideki Kato;Akihiko Kudo .Visible-Light-Response and Photocatalytic Activities of TiO_2 and SrTiO_3 Photocatalysts Codoped with Antimony and Chromium[J].The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical,2002(19):5029-5034. |
| [9] | Shicheng Zhang;Jiaxiang Liu;Yuexin Han;Bingchen Chen;Xingguo Li: .Formation mechanisms of SrTiO_3 nanoparticles under hydrothermal conditions[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2004(1):11-17. |
| [10] | Hanxing Liu;Xiaoqin Sun;Qinglin Zhao;Jing Xiao;Shixi Ouyang .The syntheses and microstructures of tabular SrTiO_3 crystal[J].Solid-State Electronics,2003(12):2295-2298. |
| [11] | WANG J S;YIN S;KOMATSU M et al.Preparation and characterization of nitrogen doped SrTiO3 photocatalyst[J].Journal of Photochemistry and Photobiochemistry A:Chemistry,2004,165(1-3):149-156. |
| [12] | Wang XW.;Zhou SX.;Zhang ZY. .Preparation of nano-crystalline SrTiO3 powder in sol-gel process[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2001(1):29-33. |
| [13] | SELVARAJ U;ALAMANDA V;SRIDHAR K et al.Sol-gel processing of oriented SrTiO3 thin films[J].Materials Letters,1995,23(1-3):123-137. |
| [14] | POHT J;HABERKOM R;BECK H P .Combustion-synthesis of SrTiO3[J].Journal of the European Ceramic Society,2000,20(06):707-713. |
| [15] | 华中师范大学.分析化学上册[M].北京:高等教育出版社,2005:277-284. |
| [16] | ZHANG W J;YU Y;BI F F et al.Calcination effects on properties of TiO2/HZSM-5 photocatalyst using pretreated HZSM-5 support[J].Journal of Advanced Oxidation Technologies,2013,16(01):198-205. |
| [17] | SCHWARZ A;HARTIG K J;GETOFF N .Diffusion controlled photocurrent transients at the surface of thin polycrystalline n-TiO2 layers[J].International Journal of Hydrogen Energy,1988,13(02):81-86. |
| [18] | K.M. Parida;Nruparaj Sahu .Visible light induced photocatalytic activity of rare earth titania nanocomposites[J].Journal of molecular catalysis, A. Chemical,2008(1/2):151-158. |
| [19] | 陈秀琴,张兴旺,雷乐成.F掺杂TiO2纳米管阵列的可见光催化活性和电子结构[J].无机材料学报,2011(04):369-374. |
| [20] | Pouilleau J.;Groult H.;Marcus P.;Devilliers D. .SURFACE STUDY OF A TITANIUM-BASED CERAMIC ELECTRODE MATERIAL BY X-RAY PHOTOELECTRON SPECTROSCOPY[J].Journal of Materials Science,1997(21):5645-5651. |
| [21] | Shuang Zhi Liu;Tian Xi Wang;Li Yun Yang .Low temperature preparation of nanocrystalline SrTiO3 and BaTiO3 from alkaline earth nitrates and TiO2 nanocrystals[J].Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems,2011(2):378-381. |
| [22] | Kai Wang;Shengfu Ji;Xuejun Shi .Autothermal oxidative coupling of methane on the SrCO3/Sm2O3 catalysts[J].Catalysis Communications,2009(6):807-810. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%