Article detail · 2018
Gas Sensing Properties of p-Co3O4/n-TiO2 Nanotube Heterostructures
- Year
- 2018
- Type
- article
Data source split
- YÖKSİS YÖKSİS article record
- YÖKSİS venue SENSORS
- Catalog match (ISSN) Sensors
- OpenAlex OpenAlex enrichment (abstract, citations, topics)
Abstract
English (OpenAlex)
In this paper, we fabricated p-Co₃O₄/n-TiO₂ heterostructures and investigated their gas sensing properties. The structural and morphological characterization were performed by scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy analysis (XPS). The electrical properties of the heterostructure were studied within the temperature range from 293 K to 423 K. Changes in electrical properties and sensing behavior against reducing and oxidizing gases were attributed to the formation of p-n heterojunctions at the Co₃O₄ and TiO₂ interface. In comparison with sensing performed with pristine TiO₂ nanotubes (NTs), a significant improvement in H₂ sensing at 200 °C was observed, while the sensing response against NO₂ decreased for the heterostructures. Additionally, a response against toluene gas, in contrast to pristine TiO₂ NTs, appeared in the Co₃O₄/TiO₂ heterostructure samples.
Topics
- Gas Sensing Nanomaterials and Sensors
- Advanced Chemical Sensor Technologies
- Transition Metal Oxide Nanomaterials
Primary topic Gas Sensing Nanomaterials and Sensors