Abstract
S-doped TiO2 nanostructure (STN) photocatalyst films were prepared in an aqueous solution containing NH4F and different concentrations of potassium disulfite as the sulfur source, via the electrochemical oxidation of titanium substrates. The resulting samples were characterized by field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD) and energy-dispersive X-ray spectroscopy (EDX). Diffuse reflectance spectra showed a shift toward longer wavelengths relative to pure TiO2. The dependence of photoactivity on sulfur doping on TiO2 was studied for photocatalytic hydrogen generation and photodegradation of rhodamine B (RhB). After S-doping, the removal rate of RhB and the hydrogen photogeneration amount increased under visible light radiation. The doping also led to the remarkable photocurrent enhancement. Also, clear dependence between photocurrent intensity and photoactivity was observed. This work demonstrated a feasible and simple anodization method to fabricate an effective, reproducible, and inexpensive visible-light-driven photocatalyst for environmental applications.
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Fujishima A, Rao TN, Tryk DA (2000) Titanium dioxide photocatalysis. J Photochem Photobiol C 1:1–21
Hermana JM, Guillard C, Disdier J, Lehaut C, Maitao S, Blanco J (2002) New industrial titania photocatalysts for the solar detoxification of water containing various pollutants. Appl Catal B 35:281–294
Bahnermann DW, Kholuiskaya SN, Dillert R, Kulak AI, Kokorin A (2002) Photodestruction of dichloroacetic acid catalyzed by nano-sized TiO2 particles. Appl Catal B 36:161–169
Hoffmann MR, Martin ST, Choi W, Bahnemann DW (1995) Environmental applications of semiconductor photocatalysis. Chem Rev 95:69–96
Li H, Zhang X, Huo Y, Zhu J (2007) Supercritical preparation of a highly active S-doped TiO2 photocatalyst for methylene blue mineralization. Environ Sci Technol 41:4410–4414
Yang G, Yan Z, Xiao T (2012) Low-temperature solvothermal synthesis of visible-light-responsive S-doped TiO2 nanocrystal. Appl Surf Sci 258:4016–4022
Khan SUM, Al-Shahry M, Ingler WB (2002) Efficient photochemical water splitting by a chemically modified n-TiO2. Science 297:2243–2245
Gourinchas-Courtecuisse V, Bocquet F, Chhor K, Pommier C (1996) Modeling of a continuous reactor for TiO2 powder synthesis in a supercritical fluid-experimental validation. J Supercrit Fluids 9:222–226
Yu JC, Ho W, Yu J, Yip H, Wong PK, Zhao J (2005) Efficient visible-light-induced photocatalytic disinfection on sulfur doped nanocrystalline titania. Environ Sci Technol 39:1175–1179
Barka N, Qourzal S, Assabbane A, Nounah A, Ait-Ichou Y (2008) Factors influencing the photocatalytic degradation of rhodamine B by TiO2-coated non-woven paper. J Photochem Photobiol A 195:346–351
Tang X, Li D (2008) Sulfur-doped highly ordered TiO2 nanotubular arrays with visible light response. J Phys Chem C 112:5405–5409
Ohno T, Akiyoshi M, Umebayashi T (2004) Preparation of S-doped TiO2 photocatalysts and their photocatalytic activities. Appl Catal A 265:115–123
Umebayashi T, Yamaki T, Itoh H (2002) Band gap narrowing of titanium dioxide by sulfur doping. Appl Phys Lett 81:454–456
Gomez R, Lopez T, Ortiz-Islas E (2003) Effect of sulfation on the photoactivity of TiO2 sol-gel derived catalysts. J Mol Catal A Chem 193:217–226
Liu SX, Chen XY, Chen X (2006) N-doped visible light response nanosize TiO2 photocatalyst prepared by acid catalyzed hydrolysis method. Chin J Catal 27:697–702
Irie H, Watanabe Y, Hashimoto K (2003) Nitrogen-concentration dependence on photocatalytic activity of TiO2-xNx powders. J Phys Chem B 107:5483–5486
Irie H, Watanabe Y, Hashimoto K (2003) Carbon-doped anatase TiO2 powders as a visible-light sensitive photocatalyst. Chem Lett 32:772–773
Umebayashi T, Yamaki T, Tanaka S, Asai K (2003) Visible light-induced degradation of methylene blue on S-doped TiO2. Chem Lett 32:330–332
Justicia I, Ordejon P, Canto G (2002) Designed self-doped titanium oxide thin films for efficient visible-light photocatalysis. Adv Mater 14:1399–1402
Ohno T, Mitsui T, Matsumura M (2003) Photocatalytic activity of S-doped TiO2 photocatalyst under visible light. Chem Lett 32:364–366
Liu G, Sun C, Smith SC, Wang L, Lu GQ, Cheng HM (2010) Sulfur doped anatase TiO2 single crystals with a high percentage of {001} facets. J Colloid Interface Sci 349:477–483
Zhang Z, Faruk Hossain M, Takahashi T (2010) Fabrication of shape-controlled α-Fe2O3 nanostructures by sonoelectrochemical anodization for visible light photocatalytic application. Mater Lett 64:435–438
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The author would like to acknowledge the financial support of the Iranian Nanotechnology Society and Isfahan University of Technology (IUT) Research Council.
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Momeni, M.M., Ghayeb, Y. & Ghonchegi, Z. Visible light activity of sulfur-doped TiO2 nanostructure photoelectrodes prepared by single-step electrochemical anodizing process. J Solid State Electrochem 19, 1359–1366 (2015). https://doi.org/10.1007/s10008-015-2758-2
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DOI: https://doi.org/10.1007/s10008-015-2758-2