Effects of calcination condition on porous reduced titanium oxides and oxynitrides via preceramic polymer route
Effects of calcination condition on porous reduced titanium oxides and oxynitrides via preceramic polymer route
复制标题
煅烧条件对陶瓷前体聚合物途径多孔还原钛氧化物和氮氧化物的影响
DOI：
10.1021/ic502972v
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发表时间：
2015
影响因子：
4.6
通讯作者：
Kazuki Nakanishi
中科院分区：
文献类型：
--
作者：
George Hasegawa;Tatsuya Sato;Kazuyoshi Kanamori;Cheng-Jun Sun;Yang Ren;Yoji Kobayashi;Hiroshi Kageyama;Takeshi Abe;Kazuki Nakanishi
基于钛的无机-有机杂化网络的陶瓷前体聚合物路线提供了具有整体形状以及明确的多孔结构的导电氮掺杂还原钛氧化物（TinO2n-1）和氮氧化钛（TiOxNy）。与通过碳或氢还原TiO 2 相比，该方法证明了有利的较低的晶体相变温度。在本研究中，通过采用三种不同的大气条件和改变煅烧温度，探讨了煅烧条件对产品各种特性的影响。详细的晶体学和元素分析揭示了相对于煅烧气氛的相变行为的显着差异。讨论了最终产品的结晶和氮化行为、多孔特性和电导率之间的相关性。
A preceramic polymer route from Ti-based inorganic–organic hybrid networks provides electroconductive N-doped reduced titanium oxides (TinO2n–1) and titanium oxynitrides (TiOxNy) with a monolithic shape as well as well-defined porous structures. This methodology demonstrates an advantageously lower temperature of the crystal phase transition compared to the reduction of TiO2by carbon or hydrogen. In this study, the effect of calcination conditions on various features of the products has been explored by adopting three different atmospheric conditions and varying the calcination temperature. The detailed crystallographic and elemental analyses disclose the distinguished difference in the phase transition behavior with respect to the calcination atmosphere. The correlation between the crystallization and nitridation behaviors, porous properties, and electric conductivities in the final products is discussed.