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Tunable synthesis of enhanced photodegradation activity of brookite/anatase mixed-phase titanium dioxide

Published online by Cambridge University Press:  13 July 2012

Xiaomeng Lü ,
Danjun Mao ,
Xiaojun Wei ,
Hui Zhang ,
Jimin Xie  and
Wei Wei
Xiaomeng Lü
Affiliation:
Department of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang212013, China
Danjun Mao
Affiliation:
Department of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang212013, China
Xiaojun Wei
Affiliation:
Department of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang212013, China
Hui Zhang
Affiliation:
Department of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang212013, China
Jimin Xie*
Affiliation:
Department of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang212013, China
Wei Wei
Affiliation:
Department of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang212013, China
*
a)Address all correspondence to this author. e-mail: xiejm391@sohu.com
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Abstract

Using titanium sulfate, Ti(SO4)2, as precursor and sodium hydroxide, NaOH, as adjusting reagent, pure brookite, pure anatase, and mixed-phase titanium dioxide (TiO2) with tunable brookite/anatase ratios were synthesized via a hydrothermal process. The samples were characterized by x-ray diffractionspectrometry, ultraviolet-visible diffuse reflectance spectrometry, transmission electron microscopy, and Brunauer-Emmett-Teller measurement. Photocatalytic degradation of Rhodamine B in aqueous solution served as a probe reaction to evaluate the photocatalytic activity of the as-prepared nanocomposites under visible irradiation (λ > 400 nm). The mixed-phase TiO2 exhibits higher photodegradation activity than single phase TiO2. The sample with 63.1% brookite and 36.9% anatase shows the highest degradation activity. Possible mechanism attributing to the enhanced activity was proposed based on the strucutre and surface property of the samples.

Type
Articles
Information
Journal of Materials Research , Volume 28 , Issue 3: Focus Issue: Titanium Dioxide Nanomaterials , 14 February 2013 , pp. 400 - 404
Copyright
Copyright © Materials Research Society 2012

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References

REFERENCES

Fujishima, A. and Honda, K.: Electrochemical photolysis of water at a semiconductor electrode. Nature 238, 37 (1972).CrossRefGoogle Scholar
Yu, C.L., Yang, K., Yu, J.C., Cao, F.F., Li, X., and Zhou, X.C.: Fast fabrication of Co3O4 and CuO/BiVO4 composite photocatalysts with high crystallinity and enhanced photocatalytic activity via ultrasound irradiation. J. Alloys Compd. 509, 4547 (2011).CrossRefGoogle Scholar
Yu, J.G., Yu, J.C., Leung, M.K.P., Ho, W.K., Cheng, B., Zhao, X.J., and Zhao, J.C.: Effects of acidic and basic hydrolysis catalysts on the photocatalytic activity and microstructures of bimodal mesoporous titania. J. Catal. 217, 69 (2003).CrossRefGoogle Scholar
Krysa, J. and Jirkovsky, J.: Electrochemically assisted photocatalytic degradation of oxalic acid on particulate TiO2 film in a batch mode plate photoreactor. J. Appl. Electrochem. 32, 591 (2002).CrossRefGoogle Scholar
Almquist, C.B. and Biswas, P.: Role of synthesis method and particle size of nanostructured TiO2 on its photoactivity. J. Catal. 212, 145 (2002).CrossRefGoogle Scholar
Zhang, Z.B., Wang, C.C., Zakaria, R., and Ying, J.Y.: Role of particle size in nanocrystalline TiO2-based photocatalysts. J. Phys. Chem. B. 102, 10871 (1998).CrossRefGoogle Scholar
Ovenstone, J. and Yanagisawa, K.: Effect of hydrothermal treatment of amorphous titania on the phase change from anatase to rutile during calcination. Chem. Mater. 11, 2770 (1999).CrossRefGoogle Scholar
Augustynski, J.: The role of the surface intermediates in the photoelectrochemical behavior of anatase and rutile TiO2. Electrochim. Acta 38, 43 (1993).CrossRefGoogle Scholar
Bickley, R., Gonzalez-Carreno, T., Lees, J., Palmisano, L., and Tilley, R.: A structural investigation of titanium dioxide photocatalysts. J. Solid State Chem. 92, 178 (1991).CrossRefGoogle Scholar
Li, G.H. and Gray, K.A.: Preparation of mixed-phase titanium dioxide nanocomposites via solvothermal processing. Chem. Mater. 19, 1143 (2007).CrossRefGoogle Scholar
Ohtani, B., Handa, J., Nishimoto, S., and Kagiya, T.: Highly active semiconductor photocatalyst: Extra-fine crystallite of brookite TiO2 for redox reaction in aqueous propan-2-ol and/or silver sulfate solution. Chem. Phys. Lett. 120, 292 (1985).CrossRefGoogle Scholar
Kandiel, T.A., Feldhoff, A., Robben, L., Dillert, R., and Bahnemann, D.W.: Tailored titanium dioxide nanomaterials: Anatase nanoparticles and brookite nanorods as highly active photocatalysts. Chem. Mater. 22, 2050 (2010).CrossRefGoogle Scholar
Xie, J.M., Lü, X.M., Liu, J., and Shu, H.M.: Brookite titania photocatalytic nanomaterials: synthesis, properties, and applications. Pure Appl. Chem. 81, 2407–2415 (2009).CrossRefGoogle Scholar
Naicker, P.K., Cummings, P.T., Zhang, H., and Banfield, J.F.: Characterization of titanium dioxide nanoparticles using molecular dynamics simulations. J. Phys. Chem. B 109, 15243–15249 (2005).CrossRefGoogle ScholarPubMed
Olivares, M., Zuluaga, M.C., Ortega, L.A., Murelaga, X., Alonso-Olazabal, A., Urteaga, M., Amundaray, L., Alonso-Martin, I., and Etxebarria, N.: Characterization of fine wall and eggshell Roman pottery by Raman spectroscopy. J. Raman Spectrosc. 41, 1543–1549 (2010).CrossRefGoogle Scholar
Xu, H. and Zhang, L.Z.: Controllable one-pot synthesis and enhanced photocatalytic activity of mixed-phase TiO2 nanocrystals with tunable brookite/rutile ratios. J. Phys. Chem. C 113, 1785–1790 (2009).CrossRefGoogle Scholar
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