التفاصيل البيبلوغرافية
| العنوان: |
Enhanced Potentiometric Hydrogen Sensing Response Based on the Ba 0.5 Sr 0.5 Co 1– y Fe y O 3– δ Electrode with Unusual Polarity |
| المؤلفون: |
Hong Zhang, Yanqing Liu, Hailin Su, Yuelong Zhu, Haowei Zhu, Shibin Nie, Liangji Xu |
| سنة النشر: |
1753 |
| المجموعة: |
Smithsonian Institution: Figshare |
| مصطلحات موضوعية: |
Biophysics, Molecular Biology, Physiology, Pharmacology, Biotechnology, Ecology, Computational Biology, Environmental Sciences not elsewhere classified, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, 450 ° c, potentiometric hydrogen sensor, hydrogen increased monotonically, significantly higher response, potentiometric response values, 500 ppm hydrogen, hydrogen sensing response, δ , mixed conducting ba, fe doping concentration, electronic conducting zno, dual se sensor, dual sensing electrode, 8 , 5 , 2 , hydrogen response, sensing behaviors, high response, 5 ppm |
| الوصف: |
In this work, unusual potentiometric hydrogen sensing of mixed conducting Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3– δ was reported. Inspired by the unusual polarity, a dual sensing electrode (SE) potentiometric hydrogen sensor was fabricated by pairing Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3– δ with electronic conducting ZnO to enhance the hydrogen response. Hydrogen sensing measurements suggested that significantly higher response, larger sensitivity, and lower limit of detection (LOD) were achieved by the dual SE sensor when compared with the single SE sensor based on Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3– δ or ZnO. A high response of 97.3 mV for 500 ppm hydrogen and a low LOD of 2.5 ppm were obtained by the dual SE sensor at 450 °C. Furthermore, the effect of the Fe doping concentration in Ba 0.5 Sr 0.5 Co 1– y Fe y O 3– δ ( y = 0.2, 0.5, and 0.8) on hydrogen sensing response was investigated. The potentiometric response values to hydrogen increased monotonically with increasing Fe doping concentration. With the Fe/Co atomic ratio increased from 0.25 to 4, the responses to 500 ppm hydrogen raised by 69.6 and 94% at 350 and 450 °C, respectively. The sensing behaviors of unusual Ba 0.5 Sr 0.5 Co 1– y Fe y O 3– δ may be ascribed to the predominant surface electrostatic effect. These results show that mixed conducting Ba 0.5 Sr 0.5 Co 1– y Fe y O 3– δ is desirable for developing high-performance dual SE hydrogen sensors. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| العلاقة: |
https://figshare.com/articles/journal_contribution/Enhanced_Potentiometric_Hydrogen_Sensing_Response_Based_on_the_Ba_sub_0_5_sub_Sr_sub_0_5_sub_Co_sub_1_i_y_i_sub_Fe_sub_i_y_i_sub_O_sub_3_sub_sub_sub_Electrode_with_Unusual_Polarity/25222785Test |
| DOI: |
10.1021/acsomega.3c06833.s001 |
| الإتاحة: |
https://doi.org/10.1021/acsomega.3c06833.s001Test |
| حقوق: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.7AB0EC9D |
| قاعدة البيانات: |
BASE |
