Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 3, Issue 48, Pages 24333-24337Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta06734k
Keywords
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Funding
- Natural Science Foundation for Distinguished Young Scientists of Jiangsu Province [BK2012008]
- Hong Kong, Macao and Taiwan Science and Technology Cooperation Program of China [2012DFH50120]
- National Natural Science Foundation of China [21373263]
- External Cooperation Program of BIC, Chinese Academy of Sciences [121E32KYSB20130009]
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A wearable CO sensor based on a macroscopic membrane which consists of polyaniline (PANI) coated electrospun nanofibers is reported. The membrane material has a centimeter range macro-film shape with highly porous networks and an ultra-fine nanofiber structure modified with PANI nanocones by an in situ polymerization route, making it a suitable candidate for sensing materials. Sensors based on the macro-PANI nanofiber membrane are constructed, displaying a rapid response (20 s) to CO with a high detection limit (2.5 ppb) at room temperature. Furthermore, by replacing the nanofiber template with natural cotton fibers, a sensing material towards wearable sensors is manufactured and excellent sensing responses are also detected. This work provides a simple process to make macroscale sensing materials with homogeneous, subtle nanoscale architecture and offers significant opportunities for wearable sensors.
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