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<p>This work reports on pulsed laser deposition of TiO<sub>2</sub>-based highly porous nanostructures in air at atmospheric pressure by laser ablation of composite targets. We investigated the impact of SnO<sub>2</sub> and WO<sub>3</sub> content introduced into the TiO<sub>2</sub> target used for ablation on the deposited samples’ structure, morphology, composition, and physical properties. It was found that a small amount of SnO<sub>2</sub> or WO<sub>3</sub> content (below 10 wt% SnO<sub>2</sub>) in the TiO<sub>2</sub> target changes the crystalline structure of the deposited samples from anatase to a mixed structure containing anatase and rutile phases. Meanwhile, this SnO<sub>2</sub> or WO<sub>3</sub> content in the TiO<sub>2</sub> target used for ablation does not lead to significant morphological changes of the sample deposited. Our efforts were directed to fabrication of metal-oxide nanostructures suitable for gas sensor applications. Some preliminary results on the gas-sensing properties of the TiO<sub>2</sub>-based nanostructures were reported. Our findings suggest that a small amount of SnO<sub>2</sub> or WO<sub>3</sub> enhances gas sensor performance, which is probably due to the synergy effect.</p> Graphical Abstract <p></p>

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Fabrication of metal-oxide nanostructures based on TiO2 composites for enhanced gas-sensing by using PLD method

  • 期刊论文

  • 发表日期：

    2026年2月16日

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  • Anna Dikovska,
  • Nadya Stankova,
  • Irina Bliznakova,
  • Borislava Georgieva,
  • Tina Dilova,
  • Genoveva Atanasova,
  • Georgi Avdeev,
  • Daniela Karashanova,
  • Nikolay Nedyalkov

摘要

This work reports on pulsed laser deposition of TiO2-based highly porous nanostructures in air at atmospheric pressure by laser ablation of composite targets. We investigated the impact of SnO2 and WO3 content introduced into the TiO2 target used for ablation on the deposited samples’ structure, morphology, composition, and physical properties. It was found that a small amount of SnO2 or WO3 content (below 10 wt% SnO2) in the TiO2 target changes the crystalline structure of the deposited samples from anatase to a mixed structure containing anatase and rutile phases. Meanwhile, this SnO2 or WO3 content in the TiO2 target used for ablation does not lead to significant morphological changes of the sample deposited. Our efforts were directed to fabrication of metal-oxide nanostructures suitable for gas sensor applications. Some preliminary results on the gas-sensing properties of the TiO2-based nanostructures were reported. Our findings suggest that a small amount of SnO2 or WO3 enhances gas sensor performance, which is probably due to the synergy effect.

Graphical Abstract