Preparation & Characterization of Four Kinds of TiO₂/CNTs

Abstract:

With Ti (C₄H₉O)₄ as raw material, and with untreated CNT, carboxylated CNT, hydroxylated CNT and carbon fiber as carriers respectively, four kinds of TiO₂-CNT composites were successful prepared orderly under the calcinated conditions of 400 to 800 °C by sol-gel method. The morphology and structure features of these composites were characterized by scanning calorimeter (DSC), X-ray diffraction (XRD) and scanning electron microscope (SEM) respectively. The results indicate that, as coexisting carrier material, the carbon nanotube had obvious effects on the morphology and structure of TiO₂ nanocrystal. However, when being carboxylated or hydroxylated, though multi-walled carbon nanotube has still obvious effects on crystalline form of TiO₂,threre are no remarkable impacts on its morphology.

• Periodical: Advanced Materials Research (Volumes 807-809)
• Pages: 490-495
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.807-809.490
• Online since: September 2013
• Authors: Jia Liang Li, Feng Li
• Keywords: Characterization, Morphologyt, Preparation, Sol-Gel Method, TiO₂-CNTs

References

[1] Awati P S, Awate S V, Shah P P, et al. Photecatalytic decomposition of methylene blue using nanocrystalline anatase titania prepared by ultrasonic technique. Catal Commun. Vol. 4(2003), pp.393-400.

DOI: 10.1016/s1566-7367(03)00092-x

[2] Xiaoguo Chen, Xinpeng Pan, Honggang Yang, et al. Comparison of various lights in photocatalytic degradation of microcystins (MC-RR) by TiO2 film. Journal of Agro- Environment Science. Vol. 24 (2005), pp.46-49. （in Chinese）.

[3] Sethikumaar S, Porkodi K, Vidyalakshmi R. Photo- degradation of a textile dye catalyzed by sol-gel derived nanocrystalline TiO2 via-ultrasonic irradiation. Photochem Photobiol A: Chem. Vol. 170(2005), pp.225-232.

DOI: 10.1016/j.jphotochem.2004.07.005

[4] F B Li, X Z Li, C H Ao, et al. Enhanced photocatalytic degradation of VOCs using Ln3+-TiO2 catalysts for indoor air purification. Chemoshere Vol. 59(2005), pp.787-800. （in Chinese）.

DOI: 10.1016/j.chemosphere.2004.11.019

[5] Liqiang Jing, Zhihua Sun, Fulong Yuan, et al. Effects on photo-induced charge properties of La and Cu doping for nano TiO2 and its relationship with photocatalytic activity. Chinese Science (series B) Vol. 36(2006), pp.53-57. （in Chinese）.

[6] Enwei Chen, Donghong Yin, Huijuan Song, et al. Preparation of lanthanide ions doped TiO2 and its photocatalytic activity for iminazole degradation. Chinese journal of catalysis Vol. 27(2006), pp.344-348.

[7] Heshan Cai, Guoguang Liu, Xiaoxia Li, et al. Study on the photocatalytic activity of rare earth Ho-doped TiO2 nano-crystalline. Technology of Water Treament Vol. 34(2008), pp.37-39, 49. （in Chinese）.

[8] Kong J, Frank L. N, Chou C W, et al. Nanotube molecular wires as chemical sensors. Sience Vol. 287(2000), pp.622-625.

[9] Che G, Lakshml B B, Fisher E R. CNT membranes for electrochemial energy storage and production. Nature Vol. 5(1998), pp.396-349.

[10] Zhibing Xu, Jianjun Zhou, Xianwen Wei. Photocatalytic degradation of the pollutants in acrylic fiber wastewater over TiO2 nanoparticles coated on carbon nanotubes. Journal of Anhui Normal University (Natural Science) Vol. 28(2005).

[11] Lianhong Dong, Keqiang Ding, Meng Cao. preparation and characterization o f the composite nano-material of titanium dioxide/carbon nanotubes (TiO2/ CNT). Journal of Anhui Normal University (Natural Science Editon) Vol. 32(2005).

[12] Xiaojun Sun. Study on preparation and photo- catalytic activity in visible light of modified nano TiO2，(Doctoral theses, Harbin Institute of Technology, China 2003). （in Chinese）.