Acta Chimica Sinica ›› 2005, Vol. 63 ›› Issue (3): 243-248. Previous Articles     Next Articles

Original Articles

自组装合成纳米复合TiO2-ZnO介孔材料及其光催化性能

王振兴,丁士文*,张美红,张玉卓   

  1. (河北大学化学与环境科学学院 保定 071002 )
  • 收稿日期:2004-02-10 修回日期:2004-10-25 出版日期:2005-02-14 发布日期:2010-12-10
  • 通讯作者: 丁士文

Self-assembled Synthesis and Photocatalysis of Nano-TiO2-ZnO Mesoporous Material

WANG Zhen-Xing,DING Shi-Wen*,ZHANG Mei-Hong,ZHANG Yu-Zhuo   

  1. (College of Chemistry and Environmental Science, Hebei University, Baoding 071002)
  • Received:2004-02-10 Revised:2004-10-25 Online:2005-02-14 Published:2010-12-10
  • Contact: DING Shi-Wen

Nanometric TiO2-ZnO compound mesoporous material was prepared by microwave irradiation self-assembled method, using ZnSO4 and TiCl4 as raw material and nanometric carbon black as template. This method utilizes the positional hindrance effect of the long chain of soluble starch in space and the separation of macromolecule network. XRD analysis shows that the precursor is amorphous which transforms to TiO2 or the mixture of TiO2 and ZnTiO3 above 500 ℃. When the Ti∶Zn molar ratio is 1, the product is ZnTiO3. TEM measurement indicates that the TiO2-ZnO is spherical particles, and the average diameter of the particles is 15~20 nm. The size of most of the pores is about 8 nm in diameter. EDS measurement indicates that the found Ti∶Zn value of the sample agrees with the original mixing ratio and the uniformity is good. The light absorption and photocatalytic experiment show that the material has the best photocatalytic reactivity when the content of Zn is 50%. After being irradiated under the sunlight for 90 min, the compound can completely degrade the blue dye. The photocatalytic reaction follows first-order kinetics.

Key words: nano-TiO2-ZnO, microwave synthesis, self-assembled, mesoporous, photocatalysis