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Authors
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Qi, H. ; Mäder, E. ; Liu, J.
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Title
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Unique water sensors based on carbon nanotube-cellulose composites
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Date
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21.08.2013
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Number
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39263
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Abstract
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Electrically conductive films composed of carbon nanotubes (CNTs) and cellulose matrix were used as water sensors. They exhibited rapid response and high sensitivity, with a relative electrical resistance change of 5500500% for cellulose-CNT composites with CNT loading from 2 to 10 wt%. This unique performance is well reproducible and high stable even on a long-term scale for 45 days. The sensitivity of cellulose-CNT composites was mainly caused by the hygroscopic swelling of the cellulose matrix, which was investigated by scanning electron microscope and wide-angle X-ray diffraction. The cellulose-CNT composites also showed a high selectivity for waterethanol solutions with different fraction of water.
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Publisher
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Sensors and Actuators B: Chemical
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Wikidata
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Citation
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Sensors and Actuators B: Chemical 185 (2013) 225-230
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DOI
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https://doi.org/10.1016/j.snb.2013.04.116
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Tags
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