Effect of indium segregation on the surface versus bulk chemistry for indium-doped TiO2
作者： Armand J. Atanacio , Tadeusz Bak , Janusz Nowotny
DOI: 10.1021/AM301729Z
关键词:
摘要: This work reports the effect of indium segregation on surface versus bulk composition (In)-doped TiO(2). The studies are performed using proton-induced X-ray emission (PIXE), secondary-ion mass spectrometry (SIMS), photoelectron spectroscopy (XPS), and Rutherford backscattering (RBS). results XPS analysis indicate that annealing In-doped TiO(2) containing 0.3 atom % In at 1273 K in gas phase controlled oxygen activity [p(O(2)) = 75 kPa 10 Pa] a enrichment 2.95 2.61 In, respectively. obtained data considered terms transport ions from its titanium sites to where these incorporated into interstitial sites. segregation-induced is formation low-dimensional structure sublayer, which charged negatively. latter formed as result strong interactions between vacancies ions, leading defect complexes. this may be used for engineering TiO(2)-based semiconductors with enhanced performance solar energy conversion.
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sci-hub.se 参考文章(20)
Armand J Atanacio, Effect of indium and niobium segregation on the surface vs. bulk chemistry of titanium dioxide (rutile) ,(2013)
K S Chandra Babu, D Singh, O N Srivastava, Investigations on the mixed oxide material TiO2-In2O3 in regard to photoelectrolytic hydrogen production Semiconductor Science and Technology. ,vol. 5, pp. 364- 368 ,(1990) , 10.1088/0268-1242/5/4/018
K. Wilke, H.D. Breuer, The influence of transition metal doping on the physical and photocatalytic properties of titania Journal of Photochemistry and Photobiology A-chemistry. ,vol. 121, pp. 49- 53 ,(1999) , 10.1016/S1010-6030(98)00452-3
V. Rodríguez-González, A. Moreno-Rodríguez, M. May, F. Tzompantzi, R. Gómez, Slurry photodegradation of 2,4-dichlorophenoxyacetic acid: A comparative study of impregnated and sol–gel In2O3–TiO2 mixed oxide catalysts Journal of Photochemistry and Photobiology A: Chemistry. ,vol. 193, pp. 266- 270 ,(2008) , 10.1016/J.JPHOTOCHEM.2007.07.005
M. K. Nowotny, T. Bak, J. Nowotny, Electrical properties and defect chemistry of TiO2 single crystal. IV. Prolonged oxidation kinetics and chemical diffusion. Journal of Physical Chemistry B. ,vol. 110, pp. 16302- 16308 ,(2006) , 10.1021/JP060624C
Enjun Wang, Wensheng Yang, Yaan Cao, Unique Surface Chemical Species on Indium Doped TiO2 and Their Effect on the Visible Light Photocatalytic Activity Journal of Physical Chemistry C. ,vol. 113, pp. 20912- 20917 ,(2009) , 10.1021/JP9041793
Kyriaki E. Karakitsou, Xenophon E. Verykios, Effects of altervalent cation doping of titania on its performance as a photocatalyst for water cleavage The Journal of Physical Chemistry. ,vol. 97, pp. 1184- 1189 ,(1993) , 10.1021/J100108A014
O CARP, Photoinduced reactivity of titanium dioxide Progress in Solid State Chemistry. ,vol. 32, pp. 33- 177 ,(2004) , 10.1016/J.PROGSOLIDSTCHEM.2004.08.001
R. Sasikala, A.R. Shirole, V. Sudarsan, Jagannath, C. Sudakar, R. Naik, R. Rao, S.R. Bharadwaj, Enhanced photocatalytic activity of indium and nitrogen co-doped TiO2–Pd nanocomposites for hydrogen generation Applied Catalysis A-general. ,vol. 377, pp. 47- 54 ,(2010) , 10.1016/J.APCATA.2010.01.039
Armand J. Atanacio, Janusz Nowotny, Kathryn E. Prince, Effect of oxygen activity on surface composition of in-doped TiO2 at elevated temperatures Journal of Physical Chemistry C. ,vol. 116, pp. 19246- 19251 ,(2012) , 10.1021/JP302724J