NiO decorated CeO(2) nanostructures as room temperature isopropanol gas sensors.
NiO decorated CeO(2) nanostructures as room temperature isopropanol gas sensors.
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作者：
由于在吸附和脱附过程中电阻的巨大变化，使用CeO 2开发的异质结构在金属氧化物气体传感器领域显示出有前途的特性。通过简单的两步法合成了NiO修饰的CeO 2纳米结构（NiO/CeO 2）。高分辨透射电子显微镜（HRTEM）的结果显示，NiO的CeO 2表面上的完美装饰。的NiO/CeO 2传感器表面的多孔性，从扫描电子显微镜（SEM）分析证实。在室温条件下对原始CeO 2和NiO/CeO 2传感器进行了气敏研究，观察到NiO/CeO 2传感器对异丙醇的气敏性能增强。NiO在CeO 2表面的修饰在NiO和CeO 2的界面处产生了内建电位，这对NiO/CeO 2传感器的上级传感性能起着至关重要的作用。观察到NiO/CeO 2传感器在室温下对100 ppm异丙醇的急剧响应和恢复时间（15 s/19 s）。NiO/CeO 2传感器的长期稳定性也进行了研究和讨论。从所有的结果可以得出结论，NiO的CeO 2表面上的装饰可以显着提高传感性能，它具有很大的优势，在设计性能最好的异丙醇气体传感器。NiO修饰的CeO 2纳米结构有利于增强对异丙醇的传感性能，即使在室温下。
Heterostructures developed using CeO2 show promising peculiarities in the field of metal oxide gas sensors due to the great variations in the resistance during the adsorption and desorption processes. NiO decorated CeO2 nanostructures (NiO/CeO2) were synthesized via a facile two-step process. High resolution transmission electron microscopy (HRTEM) results revealed the perfect decoration of NiO on the CeO2 surface. The porous nature of the NiO/CeO2 sensor surface was confirmed from scanning electron microscopy (SEM) analysis. Gas sensing studies of pristine CeO2 and NiO/CeO2 sensors were performed under room conditions and enhanced gas sensing properties for the NiO/CeO2 sensor towards isopropanol were observed. Decoration of NiO on the CeO2 surface develops a built-in potential at the interface of NiO and CeO2 which played a vital role in the superior sensing performance of the NiO/CeO2 sensor. Sharp response and recovery times (15 s/19 s) were observed for the NiO/CeO2 sensor towards 100 ppm isopropanol at room temperature. Long-term stability of the NiO/CeO2 sensor was also studied and discussed. From all the results it is concluded that the decoration of NiO on the CeO2 surface could significantly enhance the sensing performance and it has great advantages in designing best performing isopropanol gas sensors. NiO decorated CeO2 nanostructures favor enhanced sensing performance towards isopropanol even at room temperature.
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DOI：
10.3390/s120302598
发表时间：
2012
期刊：
Sensors (Basel, Switzerland)
影响因子：
--
作者：
Durrani SM;Al-Kuhaili MF;Bakhtiari IA;Haider MB
通讯作者：
Haider MB
影响因子：
9.5
作者：
Park, Sunghoon;Sun, Gun-Joo;Lee, Chongmu
通讯作者：
Lee, Chongmu
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DOI：
10.3390/s17071577
发表时间：
2017-07-05
期刊：
Sensors (Basel, Switzerland)
影响因子：
--
作者：
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通讯作者：
Zhang M
影响因子：
3.7
作者：
Liao, L.;Mai, H. X.;Yu, T.
通讯作者：
Yu, T.
影响因子：
8.4
作者：
Cai, Xiaoyan;Hu, Dan;Wang, Yude
通讯作者：
Wang, Yude