Enhanced N-Butanol Sensing Performance of Cr-Doped CeO2 Nanomaterials
The Cr-doped CeO<sub>2</sub> nanomaterials were prepared by a simple hydrothermal method. Morphological analysis revealed that Cr doping altered the morphology and size of the CeO<sub>2</sub> particles. Gas sensing tests results showed that Cr/Ce-2 has the highest response (<i>R<sub>a</sub></i>/<i>R<sub>g</sub></i> = 15.6 @ 10 ppm), which was 12.58 times higher than that of the pure CeO<sub>2</sub> sensor. Furthermore, the optimal operating temperature was reduced from 210 °C to 170 °C. The Cr/Ce-2 sensor also displayed outstanding repeatability and gas selectivity. The improved gas sensing performance of the Cr-doped CeO<sub>2</sub> sensor can be attributed to its smaller grain size and higher porosity compared to pure CeO<sub>2</sub>. In addition, oxygen vacancies played a pivotal role in improving the gas-sensing performance. The present work provides a new CeO<sub>2</sub>-based gas-sensitive material for the detection of n-butanol.
Authors
- Yu Jia (ORCID: https://orcid.org/0000-0002-5514-0639)
- Yanping Chen (ORCID: https://orcid.org/0000-0002-2512-2632)
- Jing Ren (ORCID: https://orcid.org/0000-0002-2428-9350)
- Guangfeng Zhang (ORCID: https://orcid.org/0000-0002-5558-0765)
- Haoyang Xu
Institutions
- Shandong Jianzhu University (CN)
Publication Details
- Journal
- Sensors
- Published
- 2025-02-16
- DOI
- https://doi.org/10.3390/s25041208
- Citations
- 7
- Primary Topic
- Gas Sensing Nanomaterials and Sensors
- Type
- article
- Field-Weighted Citation Impact
- 5.11
Funders
- Natural Science Foundation of Shandong Province