TY - JOUR
T1 - Au nanoparticles decorated polyaniline nanofiber sensor for detecting volatile sulfur compounds in expired breath
AU - Liu, Chuanjun
AU - Hayashi, Kenshi
AU - Toko, Kiyoshi
N1 - Funding Information:
This work is supported by Regional Innovation Cluster Program (Global Type [2nd stage]): R&D of Bioelectronic Technologies for Safety and Security and its Application for Sensing, from the Ministry of Education, Culture, Sport, Science and Technology, Japan. The authors are indebted to Herbs Japan Co. Ltd. for providing garlic samples.
PY - 2012/1/3
Y1 - 2012/1/3
N2 - A chemiresistive sensor based on polyaniline (PANI) nanofibers decorated with highly dispersed gold nanoparticles (AuNPs) is developed to detect the volatile sulfur compounds (VSCs) of human expired breath. The PANI nanofibers with a characteristic of horizontal orientation on the insulating gap area of an interdigitated electrode are prepared by a temple-free electrochemical polymerization. The formation of the fine AuNPs on the PANI nanofibers is realized by the redox reaction between HAuCl 4 and PANI in the form of emeraldine. The PANI/AuNPs sensors exhibit good sensing responses to H 2S and CH 3SH gases. The sensing ability of the fabricated electrodes on VSCs contained in human breath is confirmed by their response upon exposure to the expired breath of a healthy volunteer after ingesting raw garlic. The developed nanosensors, together with a multichannel sensing system, are expected to be used in breath analysis and disease diagnose related to malodor biomarker gases.
AB - A chemiresistive sensor based on polyaniline (PANI) nanofibers decorated with highly dispersed gold nanoparticles (AuNPs) is developed to detect the volatile sulfur compounds (VSCs) of human expired breath. The PANI nanofibers with a characteristic of horizontal orientation on the insulating gap area of an interdigitated electrode are prepared by a temple-free electrochemical polymerization. The formation of the fine AuNPs on the PANI nanofibers is realized by the redox reaction between HAuCl 4 and PANI in the form of emeraldine. The PANI/AuNPs sensors exhibit good sensing responses to H 2S and CH 3SH gases. The sensing ability of the fabricated electrodes on VSCs contained in human breath is confirmed by their response upon exposure to the expired breath of a healthy volunteer after ingesting raw garlic. The developed nanosensors, together with a multichannel sensing system, are expected to be used in breath analysis and disease diagnose related to malodor biomarker gases.
UR - http://www.scopus.com/inward/record.url?scp=84856213186&partnerID=8YFLogxK
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U2 - 10.1016/j.snb.2011.10.068
DO - 10.1016/j.snb.2011.10.068
M3 - Article
AN - SCOPUS:84856213186
SN - 0925-4005
VL - 161
SP - 504
EP - 509
JO - Sensors and Actuators B: Chemical
JF - Sensors and Actuators B: Chemical
IS - 1
ER -
