Maziarz Wojciech, Kusior Anna, Trenczek-Zajac Anita
AGH University of Science and Technology, Faculty of Computer Science, Electronics and Telecommunications, al. A. Mickiewicza 30, Krakow 30-059, Poland.
AGH University of Science and Technology, Faculty of Materials Science and Ceramics, al. A. Mickiewicza 30, Krakow 30-059, Poland.
Beilstein J Nanotechnol. 2016 Nov 15;7:1718-1726. doi: 10.3762/bjnano.7.164. eCollection 2016.
2D TiO thin films and 3D flower-like TiO-based nanostructures, also decorated with SnO, were prepared by chemical and thermal oxidation of Ti substrates, respectively. The crystal structure, morphology and gas sensing properties of the TiO-based sensing materials were investigated. 2D TiO thin films crystallized mainly in the form of rutile, while the flower-like 3D nanostructures as anatase. The sensor based on the 2D TiO showed the best performance for H detection, while the flower-like 3D nanostructures exhibited enhanced selectivity to CO(CH) after sensitization by SnO nanoparticles. The sensor response time was of the order of several seconds. Their fast response, high sensitivity to selected gas species, improved selectivity and stability suggest that the SnO-decorated flower-like 3D nanostructures are a promising material for application as an acetone sensor.
分别通过对钛基底进行化学氧化和热氧化制备了二维TiO薄膜以及同样用SnO修饰的三维花状TiO基纳米结构。研究了TiO基传感材料的晶体结构、形貌和气敏性能。二维TiO薄膜主要以金红石形式结晶，而花状三维纳米结构为锐钛矿型。基于二维TiO的传感器对H检测表现出最佳性能，而花状三维纳米结构在被SnO纳米颗粒敏化后对CO(CH)表现出增强的选择性。传感器响应时间为几秒量级。它们的快速响应、对选定气体种类的高灵敏度、提高的选择性和稳定性表明，SnO修饰的花状三维纳米结构是一种有前途的丙酮传感器应用材料。
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