Hollow Au/Polypyrrole Capsules to Form Porous and Neural Network-Like Nanofibrous Film for Wearable, Super-Rapid, and Ultrasensitive NH3 Sensor at Room Temperature
Source abstract
Abstract
Wearable conducting polymer-based NH3 sensors are highly desirable in real-time environmental monitoring and human health protection but still a challenge for their relatively long response/recovery time and moderate sensitivity at room temperature. Herein, we present an effective route to fulfill this challenge by constructing porous and neural network-like Au/polypyrrole (Au/PPy) electrospun nanofibrous film with hollow capsular units for NH3 sensor. Taking the unique architecture and synergistic effect between Au and PPy, our sensor exhibits not only super-rapid response/recovery time (both ∼7 s), faster than all reported sensors, but also stable and ultrahigh sensitivity (response reaches ∼2.3 for 1 ppm NH3) at room temperature even during repeated deformation. Furthermore, good selectivity has been also achieved. These outstanding properties make our sensor hold great potential in real-time NH3-related disease diagnosis and environmental monitoring at room temperature.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Gas Sensing Nanomaterials and Sensors · Conducting polymers and applications · Analytical Chemistry and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
The Center of Functional Materials for Working Fluids of Oil and Gas Field, School of Materials Science and Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China
Chengdu Evermaterials Co., Ltd., Chengdu, Sichuan 610500, China
Institute for Frontier Materials, Deakin University, Locked Bag 2000, Geelong, Victoria 3220, Australia
School of Pharmacy, Chengdu Medical College, Chengdu, Sichuan 610500, China
MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
Funding
Fok Ying Tung Education Foundation · National Natural Science Foundation of China · State Key Laboratory of Oil and Gas Reservoir Geology and Exploration, Southwest Petroleum University · Australian Research Council (ARC) for funding via the Australian Centre for Electromaterials Science
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