采用溶剂热法制成纳米纺锤体Fe2O3,再采用溶胶-凝胶法制成Fe2O3@SrTiC3纳米复合材料,并对其进行SEM、IR、EDS、XRD表征.SEM显示制备了纳米纺锤体Fe2O3和Fe2 O3@SrTiO3纳米复合材料;IR、EDS表征都证明SrTiO3负载成功;XRD表征显示Fe2O3为赤铁矿晶型,掺杂的SrTiO3为无定形态.针对偶氮类染料橙Ⅱ的光催化实验表明,复合材料的光催化性能优于纯Fe2 O3和纯SrTiO3,且随着SrTiO含量的增加,光催化活性增强.当SrTiO3制备过程中所加前驱体剂量为17.0g时,橙Ⅱ的去除效率为37.5%.
参考文献
[1] | Fushima A;Honda K .Electrochemical photolysis of water at a semiconducting n-type TiO2 electrode[J].NATURE,1972,238(5358):37. |
[2] | Carrawaye E R;Hofman A J;Hofman M t .Photocatalystic oxidation of organic acid on quantum sized semiconductor colloids[J].Environmental Science and Technology,1994,28(5):786. |
[3] | Gao C;Li J T;Shah Z C et al.Preparation and visiblelight photocatalytic activity of In2S3/TiO2 composite[J].Materials Chemistry and Physics,2010,122(6):183. |
[4] | Yang C Y;Wang W D;Shan Z C et al.Preparation and photocatalytic activity of high-efficiency visible-light-responsive photocatalyst SnSx/TiO2[J].Journal of Solid State Chemistry,2009,182(31):807. |
[5] | Ren P;Fan H;Wang X .Electrospun nanofibers of ZnO/BaTiO3 heterostructures with enhanced photoeatalytic activity[J].CATALYSIS COMMUNICATIONS,2012,25(5):32. |
[6] | Yan W;Fan H;Yang C .Ultra-fast synthesis and enhanced photocatalytic properties of alpha-Fe2O3/ZnO core-shell structure[J].Materials Letters,2011,65(1):1595. |
[7] | Xie Y B;Yuan C W .Photocatalytic activity and recycle application of titanium dioxide sol for X-3B photodegradation[J].Journal of Molecular Catalysis A:Chemical,2003,206(122):419. |
[8] | Takata T;Tanaka A;Hara M et al.Recent progress of photocatalysts for overall water splitting[J].Catalysis Today,1998,44(1-4):17. |
[9] | Masato Machida;Jun-ichi Yabunaka;Tsuyoshi Kijima;Shigenori Matsushima;Masao Arai .Electronic structure of layered tantalates photocatalysts, RbLnTa_2O_7 (Ln=La, Pr, Nd, and Sm)[J].International journal of inorganic materials,2001(6):545-550. |
[10] | Kato H;Kudo A .Energy structure and photocatalytic activity for water splitting of Sr2 (Ta1-xNbx)2O7 solid solution[J].Journal of Photochemistry and Photobiology A:Chemistry,2001,145(1-2):129. |
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%