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In situ X-ray diffraction patterns of the powder titania polymorphs are recorded in a temperature range from room temperature (RT) to 1200℃ in static air and vacuum. The results show that the temperature converting anatase into rutile is at 850℃ in static air and at 855℃ in vacuum. Lattice parameters for anatase (RT-850℃) and rutile (RT, 900-1200℃) in static air and those for anatase (27-850℃) and rutile (950-1200℃) in vacuum are refined. The variations of lattice parameters of anatase and rutile with temperature (℃) are therefore well described. Linear () and volume () thermal expansion coefficients of anatase (RT-850℃) and rutile (RT, 900-1200℃) are calculated. The change laws of and with temperature for anatase and rutile in static air and vacuum are summarized. At RT, the thermal expansion coefficients for anatase are a=4.5506310-6/℃, c=7.754310-6/℃, and =16.8583610-6/℃ in static air and a=4.6942910-6/℃, c=9.0285010-6/℃, and =18.6968810-6/℃ in vacuum while those for rutile are a=6.8124310-6/℃, c=8.7164410-6/℃, and =22.2217810-6/℃ in static air and a=6.0583410-6/℃, c=8.3928010-6/℃, and =20.5236210-6/℃ in vacuum, respectively.
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Keywords:
- TiO2 /
- in situ X-ray diffraction /
- phase transition /
- thermal expansion
[1] Gratzel M 2004 J. Photochem. Photobiol. A Chemistry 164 3
[2] Shankara S K, Jaldappagari S, Prashanth S N 2010 Colloids Surf. B: Biointerfaces 78 217
[3] Tan B, Wu Y Y 2006 J. Phys. Chem. B 110 15932
[4] Ibrahim A. Al-Homoudi, Thakur J S, Naik R, Auner G W, Newaz G 2007 Appl. Surf. Sci. 253 8607
[5] Sheng Y, Zhou B, Liu Y H, Zhao X, Wang C Y, Pan Y, Wang Z C 2006 Mater. Lett. 60 1327
[6] Ikezawa S,Mutsuga F, Kubota T, Suzuki R, Baba K, Koh S, Yoshioka T, Nishiwaki A, Kida K, Ninomiya Y, Wakita K 2000 Vacuum 59 514
[7] Wang K J, Hu L H, Dai S Y 2005 Acta Phys. Sin. 54 1914 (in Chinese) [王孔嘉, 胡林华, 戴松元 2005 物理学报 54 1914]
[8] Liang J K, Rao G H, Song G B, Liu F S, Peng T J 2002 Acta Phys. Sin. 51 2793 (in Chinese) [梁敬魁, 饶光辉, 宋功保, 刘福生, 彭同江 2002 物理学报 51 2793]
[9] Shanaghi A, Sabour A R, Shahrabi T, Aliofkhazraee M 2009 Protect. Metals Phys. Chem. Surf. 45 305
[10] Abdel Aal A 2008 Mater. Sci. Eng. A 474 181
[11] Shannon R D, Pask J A 1965 J. Am. Ceram. Soc. 48 391
[12] José Manuel G A, Vicente S E, Guido B 1995 J. Mater. Chem. 5 1245
[13] Gribb A A, Banfield J F 1997 Am. Mineral. 82 717
[14] Balikdjian J P, Davidson A, Launay S, Eckert H, Che M 2000 J. Phys. Chem. B 104 8931
[15] Jagtap N, Bhagwat M, Awati P, Ramaswamy V 2005 Thermochim. Acta 47 37
[16] Zheng Y F, Li G H, Tian W, Ma C A 2007 Chin. J. Inorganic Chem. 23 1121 (in Chinese) [郑遗凡, 李国华, 田伟, 马淳安 2007 无机化学学报 23 1121]
[17] Céline P, Renaud R, Durupthy O, Cassaignon S, Jolivet J P 2010 Solid State Sci. 12 989
[18] Ma L J, Guo L J 2011 Spectroscopy and Spectral Analysis 31 1133 (in Chinese) [马利静, 郭烈锦 2011 光谱与光谱学分析 31 1133]
[19] Cromer D T, Herrington K 1955 J. Am. Chem. Soc. 77 4708
[20] Rao K V K, Naidu S V N, Iyengar L 1970 J. Am. Ceram. Soc. 53 124
[21] Horn M, Schwerdtfdger C F 1972 Z. Kristallogr. 136 273
[22] Meagher E P, Lager G A 1979 Can. Mineral. 17 77
[23] Sugiyama K, Takeuchi Y 1991 Z. Kristallogr. 194 305
[24] Hummer D R, Heaney P J, Post J E 2007 Powder Diffr. 22 352
[25] Wang H J 1994 J. Appl. Crystallogr. 27 716
[26] Wang H J, Zhou J 2000 J. Appl. Crystallogr. 33 1128
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[1] Gratzel M 2004 J. Photochem. Photobiol. A Chemistry 164 3
[2] Shankara S K, Jaldappagari S, Prashanth S N 2010 Colloids Surf. B: Biointerfaces 78 217
[3] Tan B, Wu Y Y 2006 J. Phys. Chem. B 110 15932
[4] Ibrahim A. Al-Homoudi, Thakur J S, Naik R, Auner G W, Newaz G 2007 Appl. Surf. Sci. 253 8607
[5] Sheng Y, Zhou B, Liu Y H, Zhao X, Wang C Y, Pan Y, Wang Z C 2006 Mater. Lett. 60 1327
[6] Ikezawa S,Mutsuga F, Kubota T, Suzuki R, Baba K, Koh S, Yoshioka T, Nishiwaki A, Kida K, Ninomiya Y, Wakita K 2000 Vacuum 59 514
[7] Wang K J, Hu L H, Dai S Y 2005 Acta Phys. Sin. 54 1914 (in Chinese) [王孔嘉, 胡林华, 戴松元 2005 物理学报 54 1914]
[8] Liang J K, Rao G H, Song G B, Liu F S, Peng T J 2002 Acta Phys. Sin. 51 2793 (in Chinese) [梁敬魁, 饶光辉, 宋功保, 刘福生, 彭同江 2002 物理学报 51 2793]
[9] Shanaghi A, Sabour A R, Shahrabi T, Aliofkhazraee M 2009 Protect. Metals Phys. Chem. Surf. 45 305
[10] Abdel Aal A 2008 Mater. Sci. Eng. A 474 181
[11] Shannon R D, Pask J A 1965 J. Am. Ceram. Soc. 48 391
[12] José Manuel G A, Vicente S E, Guido B 1995 J. Mater. Chem. 5 1245
[13] Gribb A A, Banfield J F 1997 Am. Mineral. 82 717
[14] Balikdjian J P, Davidson A, Launay S, Eckert H, Che M 2000 J. Phys. Chem. B 104 8931
[15] Jagtap N, Bhagwat M, Awati P, Ramaswamy V 2005 Thermochim. Acta 47 37
[16] Zheng Y F, Li G H, Tian W, Ma C A 2007 Chin. J. Inorganic Chem. 23 1121 (in Chinese) [郑遗凡, 李国华, 田伟, 马淳安 2007 无机化学学报 23 1121]
[17] Céline P, Renaud R, Durupthy O, Cassaignon S, Jolivet J P 2010 Solid State Sci. 12 989
[18] Ma L J, Guo L J 2011 Spectroscopy and Spectral Analysis 31 1133 (in Chinese) [马利静, 郭烈锦 2011 光谱与光谱学分析 31 1133]
[19] Cromer D T, Herrington K 1955 J. Am. Chem. Soc. 77 4708
[20] Rao K V K, Naidu S V N, Iyengar L 1970 J. Am. Ceram. Soc. 53 124
[21] Horn M, Schwerdtfdger C F 1972 Z. Kristallogr. 136 273
[22] Meagher E P, Lager G A 1979 Can. Mineral. 17 77
[23] Sugiyama K, Takeuchi Y 1991 Z. Kristallogr. 194 305
[24] Hummer D R, Heaney P J, Post J E 2007 Powder Diffr. 22 352
[25] Wang H J 1994 J. Appl. Crystallogr. 27 716
[26] Wang H J, Zhou J 2000 J. Appl. Crystallogr. 33 1128
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