期刊
ACS NANO
卷 10, 期 6, 页码 5891-5899出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.6b01196
关键词
exhaled breath sensor; diagnosis of diseases; WO3 nanofiber; bioinspired catalyst; electrospinning
类别
资金
- National Research Foundation (NRF) of Korea - Ministry of Science, ICT, and Future Planning [NRF-2015R1A2A1A16074901]
- KOLON Corporation, Korea through the KOLON-KAIST Lifestyle Innovation Center Project [LSI14-MAKID0001]
- Intel's University Research Office (URO)
- MRSEC Program of the National Science Foundation [DMR-141980]
Highly selective detection, rapid response (<20 s), and superior sensitivity (R-air/R-gas > 50) against specific target gases, particularly at the 1 ppm level, still remain considerable challenges in gas sensor applications. We propose a rational design and facile synthesis concept for achieving exceptionally sensitive and selective detection of trace target biomarkers in exhaled human breath using a protein nanocage templating route for sensitizing electrospun nanofibers (NFs). The mesoporous WO3 NFs, functionalized with well-dispersed nanoscale Pt, Pd, and Rh catalytic nanoparticles (NPs), exhibit excellent sensing performance, even at parts per billion level concentrations of gases in a humid atmosphere. Functionalized WO3 NFs with nanoscale catalysts are demonstrated to show great promise for the reliable diagnosis of diseases.
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