Novel breath acetone sensor based on 1D/2D nanocomposite for diabetes prevention and monitoring

Novel breath acetone sensor based on 1D/2D nanocomposite for diabetes prevention and monitoring

Danling Wang, North Dakota State University 

Poster PDF

Abstract:

The acetone content in the exhaled breath of individuals as a biomarker of diabetes, has become widely studied as a non-invasive means of quantifying blood glucose levels. This calls for development of sensors for the quantitative analysis of trace concentration of acetone, which is presents in the human exhaled breath. Traditional gas detection systems such as the GC/MS and several types of chemiresistive sensors are currently being used for this purpose. However, these systems are known to have limitations of size, cost, response time, operating conditions, and consistent accuracy. An ideal breath acetone sensor should provide solutions to overcome the above limitations and provide good stability and reliability. This should be a simple and portable detection system of good sensitivity, selectivity that is low in terms of both cost and power consumption. In this poster, we will present a novel sensor using a newly synthesized nanocomposite, 1D KWO (K2W7O22) nanorods/2D Ti3C2Tx nanosheets, to detect exhaled acetone from human. The result reveals that this new sensor has excellent sensing response to acetone with much better tolerance of humidity interference, and enhanced stability. By comparing with other nanomaterials: Ti3C2, KWO, KWO/Ti3C2Tx  nanocomposite can be an excellent sensing material for application in sensitive and selective detection of breath acetone for diabetics health care and prevention.