Hostname: page-component-78c5997874-v9fdk Total loading time: 0 Render date: 2024-11-06T12:49:29.541Z Has data issue: false hasContentIssue false
  • English
  • Français

Preparation and characterization of polypyrrole/TiO2 nanocomposite and its photocatalytic activity under visible light irradiation

Published online by Cambridge University Press:  31 January 2011

Shengying Li ,
Mingkai Chen ,
Lijun He ,
Fei Xu  and
Guohu Zhao
Shengying Li*
Affiliation:
College of Chemistry and Environmental Science, Lanzhou City University, Lanzhou 730070, China
Guohu Zhao
Affiliation:
College of Chemistry and Environmental Science, Lanzhou City University, Lanzhou 730070, China
*
a) Address all correspondence to this author. e-mail: [email protected]
Get access

Abstract

A simple and convenient method for preparing visible light response photocatalyst polypyrrole/TiO2 (PPy/TiO2) nanocomposite was developed. The products were characterized by x-ray diffraction, transmission electron microscopy, atomic force microscopy, ultraviolet-visible, and Fourier transform infrared techniques. The results indicated that the nanohybrid was composed of anatase TiO2 and PPy and exhibited an enhanced visible light-capturing ability. Average diameters of TiO2 and PPy/TiO2 were 18 and 35 nm, respectively. The photocatalytic activity of the nanocomposite was evaluated by the degradation of methyl orange under visible light irradiation. In the presence of PPy/TiO2 nanocomposite, the degradation efficiency of methyl orange of 95.54% could be obtained under visible light irradiation within 120 min. The apparent rate constant was 2.19 × 10−2, which was better than that Degussa P25 nano-TiO2. The sensitization mechanism of PPy/TiO2 photocatalyst was discussed briefly.

Keywords

PhotochemicalPolymerTi
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 8 , August 2009 , pp. 2547 - 2554
Copyright
Copyright © Materials Research Society 2009

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1Phonthammachai, N., Kim, J., and White, T.J.: Synthesis and performance of a photocatalytic titania-hydroxyapatite composite. J. Mater. Res. 23, 2398 (2008).CrossRefGoogle Scholar
2Yu, J.G.: TiO2 thin film photocatalyst. Rare Met. 23, 289 (2004).Google Scholar
3Yan, X.L., He, J., Evans, D.G., Duan, X., and Zhu, Y.X.: Preparation, characterization and photocatalytic activity of Si-doped and rare earth-doped TiO2 from mesoporous precursors. Appl. Catal., B 55, 243 (2005).CrossRefGoogle Scholar
4Yavuz, O., Ram, M.K., Aldissi, M., Poddar, P., and Srikanth, H.: Polypyrrole composites for shielding applications. Synth. Met. 151, 211 (2005).CrossRefGoogle Scholar
5Chen, A.H., Wang, H.Q., Zhao, B., and Li, X.Y.: The preparation of polypyrrole–Fe3O4 nanocomposites by the use of common ion effect. Synth. Met. 139, 411 (2003).CrossRefGoogle Scholar
6Wang, J. and Ni, X.Y.: Photoresponsive polypyrrole-TiO2 nanoparticles film fabricated by a novel surface initiated polymerization. Solid State Commun. 146, 239 (2008).CrossRefGoogle Scholar
7Yan, Q.Z., Su, X.T., Zhou, Y.P., and Ge, C.C.: Influence of cerium ions on the anatase-rutile phase transition of TiO2 prepared by sol-gel auto-igniting synthesis. Rare Met. 24, 125 (2005).Google Scholar
8Sclafani, A. and Herrmann, J.M.: Comparison of the photelectronic and photocatalytic activities of various anantase and rutile forms of titania in pure liquid organic phase and in aqueous solution. J. Phys. Chem. 100, 13655 (1996).CrossRefGoogle Scholar
9Langford, J.A. and Wilson, A.J.C.: Scherrer after sixty years: A survey and some new results in the determination of crystallite size. J. Appl. Crystallogr. 11, 102 (1978).CrossRefGoogle Scholar
10Klong, H.P. and Alexander, L.E.: X-ray Diffraction Procedures for Crystalline and Amorphous Solids (Wiley Press, New York, 1954), p. 491.Google Scholar
11Ouyang, J.Y. and Li, Y.F.: Great improvement of polypyrrole films prepared electrochemically from aqueous solutions by adding nonaphenol polyethyleneoxy (10) ether. Polymer (Guildf.) 38, 3997 (1997).CrossRefGoogle Scholar
12Wang, H.L. and Fernandez, J.E.: Blends of polypyrrole and poly (vinyl alcohol). Macromolecules 26, 3336 (1993).CrossRefGoogle Scholar
13Fujishima, A., Rao, T.N., and Tryk, D.A.: Titanium dioxide photocatalysis. J. Photochem. Photobiol., C 1, 1 (2000).Google Scholar
14Vaschetto, M.E., Monkman, A.P., and Springborg, M.: First-principles studies of some conducting polymers: PPP, PPy, PPV, PPyV, and Pani. J. Mol. Struct. Theochem 468, 181 (1999).CrossRefGoogle Scholar
15Huang, K., Wan, M.X., Long, Y.Z., Chen, Z.J., and Wei, Y.: Multifunctional polypyrrole nanofibers via a functional dopant-introduced process. Synth. Met. 155, 495 (2005).CrossRefGoogle Scholar
16Street, G.B. and Skotheim, T.A.: Handbook of Conducting Polymers: Polypyrrole from Powders to Plastics (Marcel Dekker Inc., New York, 1986), pp. 265–292.Google Scholar
17Bae, W.J., Kim, K.H., Jo, W.H., and Park, Y.H.: A water-soluble and self-doped conducting polypyrrole graft copolymer. Macromolecules 38, 1044 (2005).CrossRefGoogle Scholar
18Kostić, R., Raković, D., Stepanyan, S.A., Davidova, I.E., and Gribov, L.A.: Vibrational spectroscopy of polypyrrole, theoretical study. J. Chem. Phys. 102, 3104 (1995).CrossRefGoogle Scholar
19Qiu, R.L., Zhang, D.D., Mo, Y.Q., Song, L., Brewer, E., Huang, X.F., and Xiong, Y.: Photocatalytic activity of polymer-modified ZnO under visible light irradiation. J. Hazard. Mater. 156, 80 (2008).CrossRefGoogle ScholarPubMed
20Yu, J.G. and Zhao, X.J.: Effect of surface microstructure of porous TiO2 thin films on photocatalytic decolorization of methyl orange. Chin. J. Catal. 21, 213 (2000).Google Scholar
21Sonawane, R.S., Kale, B.B., and Dongare, M.K.: Preparation and photo-catalytic activity of Fe-TiO2 thin films prepared by sol–gel dip coating. Mater. Chem. Phys. 85, 52 (2004).CrossRefGoogle Scholar
22Piscopo, A., Robert, D., and Weber, J.V.: Comparison between the reactivity of commercial and synthetic TiO2 photocatalysts. J. Photochem. Photobiol., A 139, 153 (2001).Google Scholar
23ěšMt̕ánková, H., Mailhot, G., Jirkovský, J., Krýsa, J., and Bolte, M.: Mechanistic approach of the combined (iron–TiO2) photocatalytic system for the degradation of pollutants in aqueous solution: An attempt of rationalization. Appl. Catal., B 57, 257 (2005).Google Scholar
24Nazeeruddin, M.K., Kay, A., Rodicio, I., Baker, R.H., Muller, E., Liska, P., Vlachopoulos, N., and M. Grätzel: Conversion of light to electricity by cis-X2 bis(2,2-bipyridyl-4,4-dicarboxylate) ruthenium(II) charge-transfer sensitizers (X = Cl-, Br-, I-, CN- and SCN-) on nanocrystalline TiO2 electrodes. J. Am. Chem. Soc. 115, 6382 (1993).CrossRefGoogle Scholar
25Li, Y.F. and Qian, R.Y.: On the nature of redox processes in the cyclic voltammetry of polypyrrole nitrate in aqueous solutions. J. Electroanal. Chem. 362, 267 (1993).Google Scholar
26Park, D.R., Zhang, J.L., Ikeue, K., Yamashita, H., and Anpo, M.: Photocatalytic oxidation of ethylene to CO2 and H2O on ultrafine powdered TiO2 photocatalysts in the presence of O2 and H2O. J. Catal. 185, 114 (1999).CrossRefGoogle Scholar