Niobium Surface Segregation in Polycrystalline Niobium-Doped Titanium Dioxide
作者： L. R. Sheppard
DOI: 10.1021/JP311392D
关键词:
摘要: In the current investigation, Nb surface segregation has been studied in polycrystalline Nb-doped TiO2 (0.65 at %) two extremes of oxygen activity (p(O2) = 101 kPa and p(O2) 10–15 Pa) over temperature range 1173 to 1673 K. The aim establish effect changes ambient on enrichment. Using X-ray photoelectron spectroscopy secondary ion mass spectrometry, concentration determined along with depth profiles. It found that during processing elevated temperatures a strong influence extent segregation. Specifically, it was application low substantially increases Nb, resulting removal from near-surface region. contrast, under conditions high ...
acs.org
uws.edu.au参考文章(32)
M. P. Seah, D. Briggs, Practical surface analysis: By auger and x-ray photoelectron spectroscopy ,(1983)
L. R. Sheppard, A. Atanacio, T. Bak, J. Nowotny, K. E. Prince, Effect of niobium segregation on the surface properties of titanium dioxide Proceedings of SPIE. ,vol. 6340, pp. 634015- ,(2006) , 10.1117/12.674547
Ana M Ruiz, Go Sakai, Albert Cornet, Kengo Shimanoe, Joan Ramon Morante, Noboru Yamazoe, None, Cr-doped TiO2 gas sensor for exhaust NO2 monitoring Sensors and Actuators B-chemical. ,vol. 93, pp. 509- 518 ,(2003) , 10.1016/S0925-4005(03)00183-7
Qinglei Wang, Guoda Lian, Elizabeth C Dickey, None, Grain boundary segregation in yttrium-doped polycrystalline TiO2 Acta Materialia. ,vol. 52, pp. 809- 820 ,(2004) , 10.1016/J.ACTAMAT.2003.10.016
C.D. Terwilliger, Y.-M. Chiang, The effect of calcium segregation on grain growth in nanocrystalline TiO2 Nanostructured Materials. ,vol. 4, pp. 651- 661 ,(1994) , 10.1016/0965-9773(94)90017-5
C.D. Terwilliger, Yet-Ming Chiang, Size-dependent solute segregation and total solubility in ultrafine polycrystals: Ca in TiO2 Acta Metallurgica et Materialia. ,vol. 43, pp. 319- 328 ,(1995) , 10.1016/0956-7151(95)90288-0
J NOWOTNY, T BAK, M NOWOTNY, L SHEPPARD, Titanium dioxide for solar-hydrogen II. Defect chemistry International Journal of Hydrogen Energy. ,vol. 32, pp. 2630- 2643 ,(2007) , 10.1016/J.IJHYDENE.2006.09.005
Zhigang Zou, Jinhua Ye, Kazuhiro Sayama, Hironori Arakawa, Direct splitting of water under visible light irradiation with an oxide semiconductor photocatalyst Nature. ,vol. 414, pp. 625- 627 ,(2001) , 10.1038/414625A
L. R. Sheppard, T. Bak, J. Nowotny, Electrical properties of niobium-doped titanium dioxide. 1. Defect disorder. Journal of Physical Chemistry B. ,vol. 110, pp. 22447- 22454 ,(2006) , 10.1021/JP0637025
Jeri Ann S. Ikeda, Yet-Ming Chiang, Anthony J. Garratt-Reed, John B. Vander Sande, Space Charge Segregation at Grain Boundaries in Titanium Dioxide: II, Model Experiments Journal of the American Ceramic Society. ,vol. 76, pp. 2447- 2459 ,(1993) , 10.1111/J.1151-2916.1993.TB03965.X