Preparation of Nano-TiO2/Fly Ash Beads Composite Material and Photocatalytic Properties


Article Preview

Using TiCl4 as the titanium source, urea as the precipitating agent, nano-TiO2/fly ash beads composite materials were prepared by hydrolysis-precipitation method. The materials were characterized by SEM and XRD methods. SEM observation shows that the surface of beads have been loaded a uniform TiO2 film. XRD results shows that TiO2 films have the main phases of anatase and rutile mixed crystal structure. The effect of surface activation process of fly ash beads on TiCl4 solution hydrolysis rate was studied. The influence of calcination temperature on the microstructure and properties of composite materials was also discussed. The photocatalytic properties of the prepared materials was measured by using UV-1800 uv-vis spectrophotometer. The results show that: The composite which calcined at 500°C has a grain size of 15nm, anatase phase content of 90%, shows the best photocatalytic effect. The degradation rate of methyl orange solution can reach 95% after 2 hours irradiation (300W, Mercury lamp). Repeated experiments show that the degradation rate of composite materials still reach 80% after being used for 5 times .



Edited by:

Ran Chen




L. K. Guo et al., "Preparation of Nano-TiO2/Fly Ash Beads Composite Material and Photocatalytic Properties", Materials Science Forum, Vol. 694, pp. 440-448, 2011

Online since:

July 2011




[1] Dai Q, Shi L Y, Luo Y G. Effects of templates on the structure, stability and photo catalytic activity of macrostructure TiO2,J. Photochem Photobiol A, 2002, 148(1–3): 295–301.

[2] Umebayashi T, Yamaki T, Tanaka S, et al. Visible lightin-duced degradation of methylene blue on S-doped TiO2,J. Chem Lett, 2003, 32(4): 330–331.

DOI: 10.1246/cl.2003.330

[3] Su Bitao, Sun jiaxin, Hu changling et al. Preparation and Characterization of Fe3+ Doped TiO2 Photocatalytic Fiber Materials,J. Acta Physico-Chimica Sinica, 2009, 25(8): 1561-1566.

[4] Zhu J F, Chen F, Zhang J L, et al. Fe3+-TiO2 photo catalysts pre-pared by combining sol-gel method with hydrothermal treatment and their characterization, J. J Photochemical Photobiology A: Chem. 2006, 180: 196–204.

DOI: 10.1016/j.jphotochem.2005.10.017

[5] Yamashita, H.; Harada, M.; Mistake, J.; Takeuchi, M.; Ikea, K.; Anpo, M. J. Photochemical. Photobiology. A, (1-3): 257.

[6] Zhengzhao Ke, Huangbai Biao, Qinxiao Yan, Zhangxiao Yang, et al. Visible-Light Photocatalyst of Glass-Microspheres/Ag/TiO2: Synthesis and Characterization, J. Chinese Journal of Inorganic Chemistry, 2009, 25(11): 1898-(1902).

[7] Li Youji, Li Xiaodong, Li Junwen, Yin Jing, et al. Photocatalytic Degradation of Rhodamine B on Titanium Dioxide Bonded Active Carbon Composites,J. Environmental Chemistry, 2004, 23(6): 650-654.

DOI: 10.1016/j.catcom.2005.06.008

[8] Chen Tianhu, Shi Xiaoli, Peng Shuchuan, et al. Preparation and Characterization of Palygorskite-TiO2 Composited Material,J. Bulletin of the Chinese Ceramic Society, 2005, 24(1): 112-114.

[9] Ílian Zarpon. Montmorillonite as an adsorbent for extraction and concentration of atrazine, propazine, deethylatrazine, deisopropyla-trazine and hydroxyatrazine [J]. Anal Chime Alta, 2006, 57(9): 81–87.

DOI: 10.1016/j.aca.2006.07.011

[10] Yu Jiaguo, Zhao Xiujian. Hydrophilicity and Photocatalytic Activity of Self-cleaning Porous TiO2 Thin Films on Glass,J. Chemical Research in Chinese Universities, 2000, 9: 1437-1440.

[11] Xia Changbin, He Xiangzhu, Shi Hongwen. Studies on the oxidation of aqueous sodium sulfide solutions by H2O2 with fly ash as heterogeneous catalyst,J. ACTA Scientiae Circumstantiae, 2000, 20(6): 794-797.

[12] Liu Jiaqin, Ye Min, Wu Yucheng, Zhang Lide. Electroless plating Co-P alloy on the surface of fly ash cenospheres,J. Journal of Functional Materials, 2008, (39): 1850-1852.

[13] Roman L, Barbara C, Jadwiga S-ZI eba. Carbon-mineral adsorbents prepared by paralysis of waste materials in the presence of tetra chloromethane,J. J Colloid Inter Sic, 2005, 24: 39–47.

[14] Y. Han, D. Mayer, A. Offenhausser, S. Ingbrandt. Thin Solid Films, 2006(510): 175-180.

[15] Song Zhe, et al. Journal of Inorganic Materials, 1997, 12(3): 445-449.

[16] Kumar K-N P, Keizer K, Burggraaf A, et al. Nature, 1992, 358: 48-51.

[17] Kumar K-N P, Kumar J, Keizer K. J. Am. Geram. Soc., 1994, 77(5): 396-400.

[18] Zhang Qinghong, et al. Journal of Inorganic Materials, 2000, 15(6): 992-997.

[19] Gao Liao, et al. Journal of Inorganic Materials, 1995, 10(4): 423-427.

[20] Huang Mianfeng, Zheng Zhixiang, Xu Guangqing, Wu Yucheng. Preparation of TiO2-coated exfoliated graphite photocatalyst and its adsorption and photodegradation of methyl orange solutions, J. Journal of Functional Materials, 2008, 36(3): 326-329.

Fetching data from Crossref.
This may take some time to load.