当前位置: X-MOL 学术ACS Sens. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Rapid and Stable Detection of Carbon Monoxide in Changing Humidity Atmospheres Using Clustered In2O3/CuO Nanospheres.
ACS Sensors ( IF 8.2 ) Pub Date : 2020-03-25 , DOI: 10.1021/acssensors.9b02557
Yongjiao Sun 1 , Zhenting Zhao 2 , Koichi Suematsu 3 , Pengwei Li 1 , Zhichao Yu 1 , Wendong Zhang 1 , Jie Hu 1 , Kengo Shimanoe 3
Affiliation  

Clustered indium oxide/copper oxide (In2O3/CuO) nanospheres with different CuO amounts were successfully synthesized as sensing materials for the carbon monoxide (CO) detection. Component and morphological characterizations were performed by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). Sensing performance for CO of the clustered In2O3 and In2O3/CuO nanospheres were investigated under different temperatures and humidity conditions. The results show that the sensors based on 2 mol % In2O3/CuO (InCu2) exhibit about threefold improvement in response to CO compared to that of In2O3 with quick response and recovery time, wide linearity, and low detection limit at 200 °C under 25% relative humidity (RH). Moreover, it shows tiny resistance and response declines despite the wide range of humidity variation from 25 to 95% RH. Meanwhile, the mechanism of enhanced gas-sensing performances and antihumidity properties of InCu2 were systematically investigated. We speculated that most of the water-driven species are predominantly adsorbed by CuO due to its high affinity to the hydroxyl group, which suppresses the interaction between moisture and In2O3. InCu2 is a new and promising material to sense CO in a highly sensitive and fast manner with negligible interference from ambient humidity.

中文翻译:

使用聚集的In2O3 / CuO纳米球快速稳定地检测变化的湿度环境中的一氧化碳。

成功合成了具有不同CuO量的簇状氧化铟/氧化铜(In2O3 / CuO)纳米球作为一氧化碳(CO)检测的传感材料。通过X射线衍射(XRD),扫描电子显微镜(SEM),透射电子显微镜(TEM)和X射线光电子能谱(XPS)进行成分和形态表征。研究了在不同温度和湿度条件下,In2O3和In2O3 / CuO纳米球簇对CO的传感性能。结果表明,与In2O3相比,基于2 mol%In2O3 / CuO(InCu2)的传感器对CO的响应表现出约三倍的改善,响应速度和恢复时间短,线性范围宽,并且在200°C下25°C下检测限低%相对湿度(RH)。此外,尽管湿度在25%至95%RH范围内变化,但它仍显示出极小的电阻和响应下降。同时,系统地研究了InCu2气敏性能和防潮性能增强的机理。我们推测,大多数水驱动物质由于其对羟基的高亲和力而主要被CuO吸附,从而抑制了水分与In2O3之间的相互作用。InCu2是一种新型且有前途的材料,可以以高灵敏度和快速的方式感测CO,而对环境湿度的干扰可以忽略不计。我们推测,大多数水驱动物质由于其对羟基的高亲和力而主要被CuO吸附,从而抑制了水分与In2O3之间的相互作用。InCu2是一种新型且有前途的材料,可以以高灵敏度和快速的方式感测CO,而对环境湿度的干扰可以忽略不计。我们推测,大多数水驱动物质由于其对羟基的高亲和力而主要被CuO吸附,从而抑制了水分与In2O3之间的相互作用。InCu2是一种新型且有前途的材料,可以以高灵敏度和快速的方式感测CO,而对环境湿度的干扰可以忽略不计。
更新日期:2020-03-25
down
wechat
bug