التفاصيل البيبلوغرافية
| العنوان: |
ZnO coral-like nanoplates decorated with Pd nanoparticles for enhanced VOC gas sensing |
| المؤلفون: |
Chu Manh Hung, Lai Van Duy, Dang Thi Thanh Le, Hugo Nguyen, Nguyen Van Duy, Nguyen Duc Hoa |
| المصدر: |
Journal of Science: Advanced Materials and Devices, Vol 6, Iss 3, Pp 453-461 (2021) |
| بيانات النشر: |
Elsevier, 2021. |
| سنة النشر: |
2021 |
| المجموعة: |
LCC:Materials of engineering and construction. Mechanics of materials |
| مصطلحات موضوعية: |
Gas sensor, Pd nanoparticles, Porous ZnO coral-like nanoplates, Sensing mechanism, Materials of engineering and construction. Mechanics of materials, TA401-492 |
| الوصف: |
A high working temperature of the ZnO nanomaterial-based gas sensor could shorten the lifetime of the sensor and increase its power consumption. Enhancing the volatile organic compound (VOC) sensing performance of ZnO nanomaterial-based gas sensors in terms of gas response and temperature is vital for their practical application. Decoration of noble metals onto nanostructures is an effective approach for improving their sensing characteristics. Herein, hydrothermally synthesized ZnO coral-like nanoplates decorated with Pd nanoparticles are introduced to achieve the improved VOC sensing performance. The morphology, crystal structure, composition, atomic structure, and gas sensing properties of the synthesized pristine and Pd–ZnO coral-like nanoplates were investigated. The results showed a remarkable reduction of optimal working temperature from 450 °C for the pristine ZnO based sensor to 350 °C for the Pd–ZnO based sensor. The sensor response to acetone at the optimal operating temperature of 350 °C was improved three times by surface decoration with Pd nanoparticles. The response time and recovery time of the Pd–ZnO sensor were about three times faster than that of the pristine ZnO sensor. The Pd–ZnO sensor reached a theoretical detection limit of 17 ppt and a sensitivity of 3.5–2.5 ppm acetone at 350 °C. The sensor transient stability after several on/off switching cycles from air to gas revealed the effective reusability of the fabricated devices. A plausible mechanism for the VOC sensing of the porous Pd–ZnO coral-like nanoplate-based sensor is also discussed. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
2468-2179 |
| Relation: |
http://www.sciencedirect.com/science/article/pii/S2468217921000356; https://doaj.org/toc/2468-2179 |
| DOI: |
10.1016/j.jsamd.2021.05.005 |
| URL الوصول: |
https://doaj.org/article/0ad074b3bcad425998786ca8ec8af6a4 |
| رقم الانضمام: |
edsdoj.0ad074b3bcad425998786ca8ec8af6a4 |
| قاعدة البيانات: |
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