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Carbon Nanotube Based Gas Sensors toward Breath Analysis
Author(s) -
Ellis James E.,
Star Alexander
Publication year - 2016
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201600478
Subject(s) - carbon nanotube , nanotechnology , miniaturization , breath gas analysis , chemical sensor , gas analysis , biochemical engineering , computer science , materials science , process engineering , chemistry , engineering , electrode , chromatography
Breath analysis is a promising method for rapid, inexpensive, noninvasive disease diagnosis and health monitoring owing to the correlative relationship between breath biomarker concentrations and abnormal health conditions. However, current methods to identify and quantify breath components rely on large, bench‐top analytical instruments. Carbon nanotube (CNT)‐based gas sensors are desirable candidates to replace benchtop instruments because of their sensitive chemical‐to‐electrical transducer capability, high degree of chemical functionality options, and potential for miniaturization. This review seeks to give an overview of the synthetic methods used to functionalize CNT‐based gas sensors, specifically those sensors that target biologically relevant breath markers. Specific examples are provided to highlight the sensing mechanisms behind different classes of CNT hybrid composites. Finally, the current challenges and prospective solutions of applying CNT‐based sensors to breath analysis are discussed.