Nonstoichiometric orthorhombic titanium oxide, TiO2−δ and its thermochromic properties
Nonstoichiometric orthorhombic titanium oxide, TiO2−δ and its thermochromic properties
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DOI：
10.1016/j.materresbull.2004.04.037
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发表时间：
2004-09
影响因子：
5.4
通讯作者：
I. Tsuyumoto;H. Uchikawa
中科院分区：
文献类型：
--
作者：
I. Tsuyumoto;H. Uchikawa
阐明了锐钛矿、金红石和一种新的非化学计量比正交氧化钛之间的氧化还原关系。在此基础上，将金红石型二氧化钛单晶在950℃的氢气中还原1h，得到了非化学计量比的正交氧化钛TiO1.94单晶。用Laue和Debai-Scherrer方法证明了单晶性。测量了TiO1.94单晶的电导率和反射光谱随温度的变化关系，发现在1700 nm以上的近红外区的反射率随温度的升高而逐渐增大。人们提出了使用这种二氧化钛的“智能窗户”。
Redox relationship among anatase, rutile, and a new nonstoichiometric orthorhombic titanium oxide was elucidated. Single crystal of nonstoichiometric orthorhombic titanium oxide TiO1.94was prepared by reducing a single crystal of rutile TiO2at 950°C in H2for 1h based on this relationship. The single crystallinity was demonstrated by both the Laue and the Debye–Scherrer methods. Temperature dependence of the conductivity and the reflectance spectrum was measured for the single crystal of TiO1.94, and it was found that the reflectivity in near-infrared region over 1700nm gradually increased with increasing temperature. “Smart windows” using this titanium oxide was proposed.