采用水热法制备了钛酸盐纳米棒,样品再分别经400、500、600和800℃热处理2h.利用XRD、SEM、TEM、BET、UV-vis等手段对样品的物化性能进行了表征.以4-氯硝基苯为目标反应物考察了样品的光催化活性.结果表明,钛酸盐纳米棒具有较高的热稳定性,直径分布在50~150nm,长度可达几微米.光催化结果显示,4-氯硝基苯的光催化降解反应为动力学拟一级反应,并且经500℃热处理后的钛酸盐纳米棒具有最高的催化活性,其表观速率常数为0.04215min-1,是普通商用TiO2粉末的两倍.
参考文献
[1] | Travlos G S;Mahler J;Ragan H A et al.[J].Fundamental and Applied Toxicology,1996,30(01):75-92. |
[2] | Schmelling D C;Gray K A;Kamat P V .[J].Water Research,1997,31(06):1439-1447. |
[3] | Cochran R E;Shyue J J;Padture N P .[J].Acta Materials,2007,55(09):3007-3014. |
[4] | Qing Chen;Wuzong Zhou;Gaohui Du;Lianmao Peng .Trititanate Nanotubes Made via a Single Alkali Treatment[J].Advanced Materials,2002(17):1208-1211. |
[5] | Liao, DL;Liao, BQ .Shape, size and photocatalytic activity control of TiO2 nanoparticles with surfactants[J].Journal of Photochemistry and Photobiology. A, Chemistry,2007(2/3):363-369. |
[6] | Sun X M;Li Y D .[J].Chemistry-A European Journal,2003,9(10):2229-2238. |
[7] | Yu HG;Yu JG;Cheng B .Preparation, characterization and photocatalytic activity of novel TiO2 nanoparticle-coated titanate nanorods[J].Journal of molecular catalysis, A. Chemical,2006(1/2):99-106. |
[8] | Yu Y X;Xu D S .[J].Applied Catalysis B:Environmental,2007,73(1-2):166-171. |
[9] | Vanleeuwen R A;Hung C J;Kaler D R et al.[J].Journal of Physical Chemistry,1995,99(41):15247-15252. |
[10] | Reddy KM.;Manorama SV.;Reddy AR. .Bandgap studies on anatase titanium dioxide nanoparticles[J].Materials Chemistry and Physics,2003(1):239-245. |
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%