The Effect of Double-Element Doping on the Photocatalytic Property of Nano-TiO₂

Abstract:

Sol-gel method was applied to synthesize nano-TiO2 particles doped with metal and non-metallic elements. Nano-TiO2 particles were doped at different calcinations’ temperatures with S and Fe, Ce and La, respectively. A comparison was performed on the effect of different metallic elements on nano-TiO2 particles doped with the same non-metallic element S. X-ray diffraction results indicated that the diameter of doped nano-TiO2 particle was smaller than that of non-doped nano-TiO2 particles. The minimum diameter of nano-TiO2 doped with Ce and S was about 8nm, while that of nano-TiO2 doped with La and S was about 9nm. The minimum diameter of nano-TiO2 particles doped with Fe and S was about 10nm. In addition, with the increase of calcinations’ temperature, the size of nano-TiO2 particle increased. All nano-TiO2 particles doped with double elements were antae. Methyl orange was used to simulate the pollutant to analyze the photocatalytic property of doped nano-TiO2. The results indicated that the doped element had some effect on the photocatalytic property of nano-TiO2, and varied for different doped metallic elements. Among them, the degradation rate of methyl orange by nano-TiO2 doped with La and S under the calcinations’ temperature of 550 °C reached 28.97%.

• Periodical: Advanced Materials Research (Volume 669)
• Pages: 371-376
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.669.371
• Online since: March 2013
• Authors: Su Huang, Fu Yun Li, Yang Li, Li Zhen Yang
• Keywords: Doped with Double Elements, Nano-TiO₂, Photocatalytic

References

[1] GAO Wei, WU Feng-qing, LUO Zhen, et al. Study on the relationship between polymorph and photocatalytic activity [J]. Chemical Journal of Chinese Universities, 2001, 22 (4): 660-6621.

[2] SHI Zai-feng, REN Xue-chang, KONG Ling-ren. The effect of sol-gel process on the photocatalytic activity of TiO2 [J] Environmental Chemistry，2005, 25(5): 525-527.

[3] CHEN Xiao-qing, YANG Juan-yu, JIANG Xin-yu et al. The preparation and photocatalytic properties of iron-doped nano-Ti02 particles[J] Journal of Applied Chemistry, 2003，20(I)：73-76.

[4] YIN Li-song, ZHOU Qi-fa, TANG Xin-gui. XRD analysis on nano crystallite[J] Journal of Functional Material, 1999，30(5)：498-500.

[5] FENG Liang-rong, LV Shao-jie, QIU Fa-zha. The effect of doped transition elements on the photocatalytic properties of nano-Ti02 particles[J] ACTA CHIMICA SINICA, 2002，60(3)：463-467.

[6] SHANG Jing, XU Zi-li, DU Yao-guo et al. The effect of preparation method of nano-Ti02 particles on its photocatalytic activity [J] Journal of Molecular Catalysis, . 200l，l5（4）：282 – 28.

[7] Khan SUM, Al-shary M, Ingler W B Jr. Effeient photochemical water splitting by a chemically modified n-TiO2[J]. Science, 2002, 297: 2243-2245.

DOI: 10.1126/science.1075035

[8] HUA Nan-ping, WU Zun-yi, DU Yu-kou et al. The catalytic degradation effect on trichloroacetic acid in the presence of Pt-N-doped TiO2 particles under visible light [J]Acta Physico-Chimica Sinica, 2005, 21(10)：1081-1085.

[9] ZHANG Lai-jun, CHEN Fa-yun, ZOU Ru-yi et al. Double doping of TiO2 with Fe and N and its photocatalytic property under blue light [J] Electronic Components and Materials, 2010, 29(6)：417-421.