Enhanced N-Butanol Sensing Performance of Cr-Doped CeO2 Nanomaterials

被引：0
|
作者：
Chen, Yanping [1 ]
Xu, Haoyang [1 ]
Ren, Jing [1 ]
Zhang, Guangfeng [1 ]
Jia, Yonghui [1 ]
机构：
[1] Shandong Jianzhu Univ, Sch Sci, Jinan 250100, Peoples R China
来源：
SENSORS | 2025年 / 25卷 / 04期
关键词：
gas sensing; CeO2; n-butanol; oxygen vacancies; LOW-TEMPERATURE; SENSOR;
D O I：
10.3390/s25041208
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The Cr-doped CeO2 nanomaterials were prepared by a simple hydrothermal method. Morphological analysis revealed that Cr doping altered the morphology and size of the CeO2 particles. Gas sensing tests results showed that Cr/Ce-2 has the highest response (R-a/R-g = 15.6 @ 10 ppm), which was 12.58 times higher than that of the pure CeO2 sensor. Furthermore, the optimal operating temperature was reduced from 210 degrees C to 170 degrees C. The Cr/Ce-2 sensor also displayed outstanding repeatability and gas selectivity. The improved gas sensing performance of the Cr-doped CeO2 sensor can be attributed to its smaller grain size and higher porosity compared to pure CeO2. In addition, oxygen vacancies played a pivotal role in improving the gas-sensing performance. The present work provides a new CeO2-based gas-sensitive material for the detection of n-butanol.
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页数：17
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