|
|
- 2016
ZnO纳米线与硫掺杂TiO2微/纳复合材料的制备及其光催化活性
|
Abstract:
采用水热法制备了ZnO纳米线与硫掺杂TiO2（ZnO/S-TiO2）微/纳复合光催化剂，通过SEM、XRD、XPS对复合光催化剂进行表征，探讨了硫掺杂量和煅烧温度对该复合催化剂光催化性能的影响。结果表明，ZnO微米线表面形成了粒径较为均一的纳米S-TiO2颗粒，硫掺杂TiO2中形成了Ti-O-S键；当硫掺杂量为0.8mol%并经500℃高温煅烧的复合光催化剂对菲的降解呈现出最好的光催化活性。
： Micro/nano-structured ZnO/S-doped TiO2 composite (ZnO/S-TiO2) has been successfully prepared by hydrothermal method. The structure and morphology of the ZnO/S-TiO2 composite were characterized by SEM, XRD and XPS. The effect of dosage of sulfur doping into titanium dioxide and calcination temperature on photocatalytic activity of ZnO/S-TiO2 composite was discussed. The result indicated that Ti-O-S bond existed and homogeneous S doped TiO2 nanoparticles could be formed on the surface of ZnO. Under the conditions of 0.8 mol% of sulfur doping and the calcination temperature of 500℃, the synthesized photocatalyst exhibited the best photocatalytic activity for degradation of phenanthrene
| [1] | Hai Y W, et al.Preparation and characterization of porous TiO2/ZnO composite nanofibers via electrospinning [J]. [J].Chinese Chemical Letters, 2010, 21, 1119-1123., 2010, 21(21):1119-1123 |
| [2] | 赵秀丽.TiO2光催化剂及TiO2/ZnO复合光催化剂的制备和性能研究[D].燕山大学. 2012. |
| [3] | 陈洁.Cu2O/ZnO 复合型光催化剂的制备及其在染料废水处理中的应用[D].广西师范大学. 2008 |
| [4] | 彭超.TiO2/SrTiO3薄膜的制备、热处理及其光催化性能研究[D].兰州理工大学. 2014. |
| [5] | 王志义, 史献峰, 崔作林.ZnO异质复合对纳米TiO2晶型转变和晶粒生长的影响[J].硅酸盐学报, 2006, 9(9):1078-1083 |
| [6] | 周武艺.纳米TiO2的掺杂改性及光催化性能的研究[D]. 湖南大学，2005. |
| [7] | Charanpahari A, Umare S S, Sasikala R.Effect of Ce, N and S multi-doping on the photocatalytic activity of TiO2.[J].Applied Surface Science, 2013, 282(282):408-414 |
| [8] | Liu Y, Liu J, Lin Y, et al.Simple fabrication and photocatalytic activity of S-doped TiO2 under low power LED visible light irradiation[J].Ceramics International, 2009, 35(8):3061-3065 |
| [9] | Wang Y, Li J, Peng P, et al.Preparation of S-TiO2 photocatalyst and photodegradation of L-acid under visible light[J].Applied Surface Science, 2008, 254(16):5276-5280 |
| [10] | Lei M, ZhangY B, Fu X L, Huang Y T, Zhang L, Xiao J L.Solvothermal route to novel TiO2 capped ZnS nanowires.[J].Materials Letters, 2011, 65(65):3577-3579 |
| [11] | Cheng X, Liu H, Chen Q, et al.Construction of N, S codoped TiO2 NCs decorated TiO2 nano-tube array photoelectrode and its enhanced visible light photocatalytic mechanism[J].Electrochimica Acta, 2013, 1(1):134-142 |
| [12] | S.Liu, X Chen. A visible light response TiO2 photocatalyst realized by cationic S-doping and its application codoped with nitrogen and cerium [J].Journal of Hazardous Materials, 2008, 152(152):48-55 |
