Influence of La3+/Ce3+-doping on phase transformation and crystal growth in TiO2-15 wt% ZnO gels
作者： Z.M. Shi , L.N. Jin
DOI: 10.1016/J.JNONCRYSOL.2008.10.010
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摘要: Abstract Titania based ceramic is a good candidate for environmental sensing materials. Ion doping an effective method to improve the properties by modifying their microstructure and phase composition. By using differential thermal analysis X-ray diffraction methods, transformation behaviors of La 3+ /Ce -doped TiO 2 -15 wt% ZnO gels were studied so as modify decrease granularity crystals. Experimental results show that, anatase, rutile ZnTiO 3 nanocrystals can be tailored varying contents sintering temperatures. decreases temperature gel anatase forming phase, enhances in appearance Zn Ti O 8 interphase. With increases contents, rates , rutile, well crystals are reduced. Ultimately, action mechanism was discussed.
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sci-hub.se 参考文章(33)
Harold Philip Klug, Leroy Elbert Alexander, X-ray diffraction procedures for polycrystalline and amorphous materials ,(1954)
Amal Paul, Chemistry of glasses ,(1982)
M.R. Mohammadi, D.J. Fray, Semiconductor TiO2–Ga2O3 thin film gas sensors derived from particulate sol–gel route Acta Materialia. ,vol. 55, pp. 4455- 4466 ,(2007) , 10.1016/J.ACTAMAT.2007.04.011
Enrico Traversa, Guglielmina Gnappi, Angelo Montenero, Gualtiero Gusmano, Ceramic thin films by sol-gel processing as novel materials for integrated humidity sensors Sensors and Actuators B-chemical. ,vol. 31, pp. 59- 70 ,(1996) , 10.1016/0925-4005(96)80017-7
Lei Hou, Yu-Dong Hou, Man-Kang Zhu, Jianlan Tang, Jing-Bing Liu, Hao Wang, Hui Yan, Formation and transformation of ZnTiO3 prepared by sol–gel process Materials Letters. ,vol. 59, pp. 197- 200 ,(2005) , 10.1016/J.MATLET.2004.07.046
Weon-Pil Tai, Jae-Hee Oh, Fabrication and humidity sensing properties of nanostructured TiO2-SnO2 thin films Sensors and Actuators B-chemical. ,vol. 85, pp. 154- 157 ,(2002) , 10.1016/S0925-4005(02)00074-6
J.L van Heerden, R Swanepoel, XRD analysis of ZnO thin films prepared by spray pyrolysis Thin Solid Films. ,vol. 299, pp. 72- 77 ,(1997) , 10.1016/S0040-6090(96)09281-4
Z.M. Shi, L. Yan, L.N. Jin, X.M. Lu, G. Zhao, The phase transformation behaviors of Sn2+-doped Titania gels Journal of Non-crystalline Solids. ,vol. 353, pp. 2171- 2178 ,(2007) , 10.1016/J.JNONCRYSOL.2007.02.048
Andrew Burns, G Hayes, W Li, J Hirvonen, J.Derek Demaree, S.Ismat Shah, Neodymium ion dopant effects on the phase transformation in sol-gel derived titania nanostructures Materials Science and Engineering B-advanced Functional Solid-state Materials. ,vol. 111, pp. 150- 155 ,(2004) , 10.1016/J.MSEB.2004.04.008
Tomohiro Nishikawa, Tsuyoshi Nakajima, Yuji Shinohara, An exploratory study on effect of the isomorphic replacement of Ti 4+ ions by various metal ions on the light absorption character of TiO 2 Journal of Molecular Structure: THEOCHEM. ,vol. 545, pp. 67- 74 ,(2001) , 10.1016/S0166-1280(01)00394-3