Structural design of alkali-metal titanates: electrochemical growth of KxTi8O16, Na2+xTi6O13, and Li2+xTi3O7 single crystals with one-dimensional tunnel structures
作者： Yusuke Chiba , Daisuke Koizumi , Miwa Saito , Teruki Motohashi
DOI: 10.1039/C9CE00362B
关键词:
摘要: Single crystals of lithium, sodium, and potassium titanates were grown with high-temperature constant-voltage electrolysis TiO2 A2MoO4 (A = Li, Na, K) as fluxes. Using the potassium-containing flux, needle-like hollandite-type KxTi8O16 a maximum length ∼1 mm successfully obtained. On other hand, Na2+xTi6O13 ramsdellite-type Li2+xTi3O7 ∼3 when sodium- lithium-containing fluxes employed, respectively. This report demonstrates that electrochemical crystal growth is favorable to obtain various one-dimensional tunnel structures upon varying alkali-metal elements. The diversity in structural types resultant single reasonably explained terms ionic size alkali metals incorporated.
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sci-hub.se 参考文章(46)
D.C. Johnston, H. Prakash, W.H. Zachariasen, R. Viswanathan, High temperature superconductivity in the LiTiO ternary system Materials Research Bulletin. ,vol. 8, pp. 777- 784 ,(1973) , 10.1016/0025-5408(73)90183-9
T. Sasaki, M. Watanabe, Y. Fujiki, Structure of K1.0Ti8O16 and K0.0Ti8O16 Acta Crystallographica Section B-structural Science. ,vol. 49, pp. 838- 841 ,(1993) , 10.1107/S0108768193004677
U. Bach, D. Lupo, P. Comte, J. E. Moser, F. Weissörtel, J. Salbeck, H. Spreitzer, M. Grätzel, Solid-state dye-sensitized mesoporous TiO2 solar cells with high photon-to-electron conversion efficiencies Nature. ,vol. 395, pp. 583- 585 ,(1998) , 10.1038/26936
C. Chen, M. Spears, F. Wondre, J. Ryan, Crystal growth and superconductivity of LiTi2O4 and Li1+1/3Ti2−1/3O4 Journal of Crystal Growth. ,vol. 250, pp. 139- 145 ,(2003) , 10.1016/S0022-0248(02)02262-5
Yuichi Michiue, Mamoru Watanabe, NaxCrxTi8-xO16, Priderite with Sodium Ions in the Tunnel—Structural Study for Stability and Na Ion Transport Journal of Solid State Chemistry. ,vol. 116, pp. 296- 299 ,(1995) , 10.1006/JSSC.1995.1217
Derek JD Corcoran, David Prestwich Tunstall, John TS Irvine, Hydrogen titanates as potential proton conducting fuel cell electrolytes Solid State Ionics. ,vol. 136-137, pp. 297- 303 ,(2000) , 10.1016/S0167-2738(00)00407-0
A.F. Reid, J.A. Watts, Single crystal syntheses by the electrolyses of molten titanates, molybdates and vanadates Journal of Solid State Chemistry. ,vol. 1, pp. 310- 318 ,(1970) , 10.1016/0022-4596(70)90110-6
Hideki Abe, Akira Satoh, Kenji Nishida, Eiji Abe, Takashi Naka, Motoharu Imai, Hideaki Kitazawa, Electrochemical immobilization of Cs in single-crystalline SYNROC Journal of Solid State Chemistry. ,vol. 179, pp. 1521- 1524 ,(2006) , 10.1016/J.JSSC.2006.02.005
Melody L. Carter, Ray L. Withers, A universally applicable composite modulated structure approach to ordered BaxMyTi8−yO16 hollandite-type solid solutions Journal of Solid State Chemistry. ,vol. 178, pp. 1903- 1914 ,(2005) , 10.1016/J.JSSC.2005.03.040
M. Latroche, L. Brohan, R. Marchand, M. Tournoux, New hollandite oxides: TiO2(H) and K0.06TiO2 Journal of Solid State Chemistry. ,vol. 81, pp. 78- 82 ,(1989) , 10.1016/0022-4596(89)90204-1