期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 320, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2020.128318
关键词
Ammonia sensor; Biomass hydrogel; Ionic conduction; Humidity-assisted; High response
资金
- Natural Science Foundation Committee (NSFC) [61903150, 61773178]
- China Postdoctoral Science Foundation [801191010412]
- Projects of Science and Technology Development Plan of Jilin Province [20200801037GH]
Sensitive detection of ammonia (NH3) in exhaled human breath, may offer useful information for early diagnosis of kidney disease. Traditional chemical NH3 sensors usually suffer from ambient humidity. In this work, NH3 sensor operating under high humidity at 25 celcius with enhanced response and selectivity has been achieved based on biomass hydrogel poly-L-glutamic acid and L-glutamic acid (PGA/GA). The response of the optimum PGA/GA sensor to 50 ppm NH3 at 80% relative humidity (RH) reaches 8.4, and the sensor can detect 0.5 ppm NH3. The special ionic conductive NH3 mechanism of the PGA/GA sensor was intensively studied by complex impedance plots and a quartz crystal microbalance. The high response, low detection limit, high stability and the non-toxic characteristics of biomaterials suggest PGA/GA sensors are promising for exhaled breath analyzer.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据