Abstract
Orthorhombic titanic acid nanotubes (TAN) have large BET surface area and small-diameter one-dimensional nanotubular morphology, so they can work as a good supporter and a precursor of TiO2. However, in our former research, we found that calcination of TAN to anatase TiO2 would destroy the nanotubular structure and decrease the BET surface area sharply. In this work, we utilized the pillar effect of the foreign nanoparticles (La2O3) to keep the nanotubular morphology of TiO2, and obtained the anatase TiO2 nanotubes with large BET surface area. For improving the photocatalytic activity, Pd nanoparticles were loaded as the electron traps on the surface of La-doped TiO2 by photo-deposition method. The photocatalysts were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, diffuse reflectance spectra, and N2 adsorption–desorption isotherms measurement. Their photocatalytic activities were evaluated by the removal of propylene under visible light irradiation (λ ≥ 420 nm). The results showed that the photocatalytic activity of Pd-loaded La-doped TiO2 nanotubes improved effectively compared with that of La-doped TiO2 and pure TiO2.
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References
Anandan S, Ikuma Y, Murugesan V (2012) Highly active rare-earth-metal La-doped photocatalysts: fabrication, characterization, and their photocatalytic activity. Int J Photoener 921414:1–10
Atribak I, Bas′añez I, L′opez A (2007) Catalytic activity of La-modified TiO2 for soot oxidation by O2. Catal Commun 8:478–482
Cao G, Li Y, Zhang Q, Wang H (2010) Synthesis and characterization of La2O3/TiO2−xFx and the visible light photocatalytic oxidation of 4-chlorophenol. J Hazard Mater 178:440–449
Chen W, Hua D, Ying T, Mei Z (2006) Photocatalytic activity enhancing for TiO2 photocatalyst by doping with La. Trans Nonfer Metal Soc Chin 16:728–731
Feng C, Jin Z, Zhang J, Wu Z, Zhang Z (2010) Coaction of sub-band and doped nitrogen on visible light photoactivity of N-doped TiO2. Photochem Photobiol 86:1222–1229
Fujishima A, Honda K (1972) Electrochemical photolysis of water at a semiconductor electrode. Nature 238:37–38
Ghicov A, Suchiya H, Macak JM, Schmuki P (2005) Titanium oxide nanotubes prepared in phosphate electrolytes. Electrochem Commun 7:505–509
Gong D, Grimes CA, Varghese OK, Hu W, Singh RS, Chen Z, Dickey E (2001) Titanium oxide nanotube arrays prepared by anodic oxidation. J Mater Res 16:3331–3334
He Z, Xu X, Song S, Xie L, Tu J, Chen J, Yan B (2008) A visible light-driven titanium dioxide photocatalyst codoped with lanthanum and iodine: an application in the degradation of oxalic acid. J Phys Chem C 112:16431–16437
Jing L, XiaoJ Sun, Xin B, Wang B, Cai W, Fu H (2004) The preparation and characterization of La-doped TiO2 nanoparticles and their photocatalytic activity. J Solid State Chem 177:3375–3382
Kasuga T, Hiramatsu M, Hoson A, Sekino T, Niihara K (1998) Formation of titanium oxide nanotube. Langmuir 14:3160–3163
Kasuga T, Hiramatsu M, Hoson A, Sekino T, Niihara K (1999) Titania nanotubes prepared by chemical processing. Adv Mater 11:1307–1311
Kuvarega AT, Krause RWM, Mamba BB (2011) Nitrogen/palladium-codoped TiO2 for efficient visible light photocatalytic dye degradation. J Phys Chem C 115:22110–22120
Li Q, Zhang J, Jin Z, Yang D, Wang X, Yang J, Zhang Z (2006) Photo and photoelectrochemical properties of p-type low-temperature dehydrated nanotube titanic acid. Electrochem Commun 8:741–746
Li Q, Wang X, Jin Z, Yang D, Zhang S, Guo X, Yang J, Zhang Z (2007) n/p-Type changeable semiconductor TiO2 prepared from NTA. J Nanopart Res 9:951–957
Li Q, Kako T, Ye J (2010a) Strong adsorption and effective photocatalytic activities of one-dimensional nano-structured silver titanates. Appl Catal A 375:85–91
Li Q, Kako T, Ye J (2010b) WO3 modified titanate network film: highly efficient photo-mineralization of 2-propanol under visible light irradiation. Chem Commun 46:5352–5354
Li Q, Kako T, Ye J (2010c) PdS/CdS nanocrystal-sensitized titanate network films: enhanced photocatalytic activities and super-amphiphilicity. J Mater Chem 20:10187–10192
Li Q, Kako T, Ye J (2011) Facile ion-exchanged synthesis of Sn2+ incorporated potassium titanate nanoribbons and their visible-light-responded photocatalytic activity. Int J Hydrogen Energy 36:4716–4723
Li Q, Zong L, Xing Y, Wang X, Yu L, Yang J (2013a) Preparation of g-C3N4/TiO2 nanocomposites and investigation of their photocatalytic activity. Sci Adv Mater 5:1316–1322
Li R, Li Q, Zong L, Wang X, Yang J (2013b) BaTiO3/TiO2 heterostructure nanotube arrays for improved photoelectrochemical and photocatalytic activity. Electrochim Acta 91:30–35
Mohapatra SK, Kondamudi N, Banerfee S, Misra M (2008) Functionalization of self-organized TiO2 nanotubes with Pd nanoparticles for photocatalytic decomposition of dyes under solar light illumination. Langmuir 24:11276–11281
Ortel E, Sokolov S, Kraehnert R (2010) Influence of steel substrate roughness on morphology and mesostructure of TiO2 porous layers produced by template-assisted dip coating. Microporous Mesoporous Mater 127:17–24
Qian L, Jin Z, Zhang J, Huang Y, Zhang Z, Du Z (2005) Study of the visible-excitation luminescence of NTA-TiO2(AB) with single-electron-trapped oxygen vacancies. Appl Phys A 80:1801–1805
Sander MS, Cote MJ, Gu W, Kile BM, Tripp CP (2004) Combinational template-assisted fabrication of hierarchically ordered nanowire arrays on substrates for device applications. Adv Mater 16:2052–2057
Wang D, Yu B, Wang C, Zhou F, Liu W (2009) A novel protocol toward perfect alignment of anodized TiO2 nanotubes. Adv Mater 21:1964–1967
Wilke K, Breue H (1999) The influence of transition metal doping on the physical and photocatalytic properties of titania. J Photochem Photobiol A 121:49–53
Wu Z, Sheng Z, Liu Y, Wang H, Tang N, Wang J (2009) Characterization and activity of Pd-modified TiO2 catalysts for photocatalytic oxidation of NO in gas phase. J Hazard Mater 164:542–548
Xiong Y, Chen J, Wiley B, Xia Y, Yin Y, Li Z (2005) Size-dependence of surface plasmon resonance and oxidation for Pd nanocubes synthesis vis a seed etching process. Nano Lett 5:1237–1242
Yang J, Jin Z, Wang X, Li W, Zhang J, Zhang S, Guo X, Zhang Z (2003) Study on composition, structure and formation process of nanotube Na2Ti2O4(OH)2. Dalton Trans 20:3898–3901
Zhang W, Zhang M, Yin Z, Chen Q (2000) Photoluminescence in anatase titanium dioxide nanocrystals. Appl Phys B 70:261–265
Zhang M, Jin Z, Zhang J, Guo X, Yang J, Li W, Wang X, Zhang Z (2004) Effect of annealing temperature on morphology, structure and photocatalytic behavior of nanotubed H2Ti2O4(OH)2. J Mol Catal A 217:203–210
Zhang J, Jin Z, Feng C, Yu L, Zhang J, Zhang Z (2011) ESR study on the visible photocatalytic mechanism of nitrogen-doped novel TiO2: synergistic effect of two kinds of oxygen vacancies. J Solid State Chem 184:306630–306673
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The authors gratefully acknowledge the support of the National Natural Science Foundation of China (No. 21103042), the Specialized Research Fund for the Doctoral Program of Higher Education (No. 20114103120001), the Key Laboratory Foundation of Henan Province (122300413205), and the Postdoctoral Scientific Research Foundation of Henan Univerisity (BH2011054).
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Zong, L., Li, Q., Zhang, J. et al. Preparation of Pd-loaded La-doped TiO2 nanotubes and investigation of their photocatalytic activity under visible light. J Nanopart Res 15, 2042 (2013). https://doi.org/10.1007/s11051-013-2042-2
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DOI: https://doi.org/10.1007/s11051-013-2042-2