Abstract

Nb₂O₅–TiO₂ nanomaterials containing 0.5 and 10 mol % TiO₂ have been synthesized by the programmed deposition method. The products have been characterized by modern physicochemical methods The Nb₂O₅–TiO₂ nanomaterials have a crystal structure of orthorhombic Nb₂O₅ (T-phase). Individual niobium oxide is composed of nanoparticles with an average size of 15 ± 3 nm; increasing the TiO₂ content entails microstructural changes. For the Nb₂O₅–TiO₂ coatings, a set of chemoresistive gas-sensing properties has been studied. Of all the analyzed gases, the highest sensitivity was recorded for oxygen and hydrogen sulfide. It has been shown that the sample with 5% TiO₂ is most sensitive to О₂ and H₂S, which is explained by the formation of additional oxygen vacancies.

中文翻译：

---

高分散钛掺杂 Nb2O5 的合成及化学电阻气敏特性

摘要

Nb ₂ O ₅ –TiO ₂纳米材料含有 0.5 和 10 mol% TiO ₂已经通过程序沉积方法合成。产品已通过现代物理化学方法表征 Nb ₂ O ₅ -TiO ₂纳米材料具有正交Nb ₂ O ₅（T 相）晶体结构。单个氧化铌由平均尺寸为 15 ± 3 nm 的纳米颗粒组成；增加TiO ₂含量需要显微结构的变化。对于 Nb ₂ O ₅ –TiO ₂涂层，已经研究了一组化学电阻气敏特性。在所有分析的气体中，氧气和硫化氢的灵敏度最高。已经表明，含有 5% TiO ₂的样品对 О ₂和 H ₂ S最敏感，这是通过形成额外的氧空位来解释的。