Authors: Yang, Jyisy¹; Shih, Yu-Ru¹; Chen, I-Cherng²; Kuo, Chung-I²; Huang, Yih-Shiaw³

Source: Applied Spectroscopy, Volume 59, Issue 8, Pages 166A-194A and 965-1074 (August 2005) , pp. 1002-1008(7)

Publisher: Society for Applied Spectroscopy

Abstract:

In this paper we describe the application and characterization of zinc oxide (ZnO) nanowires in an infrared (IR) chemical sensing system for the detection of volatile organic compounds (VOCs). Under suitable conditions, we grew ZnO nanowires on the surfaces of IR internal reflection elements (IREs) and obtained successful results for the detection of VOCs. ZnO nanowires offer a large surface area to effectively adsorb the examined species; the sensitivity of these IR sensing systems was increased by 3- to 15-fold after surface treatment with the ZnO nanowires. To explore the performance of this type of sensor, we correlated the morphologies of the ZnO nanowires grown on the surfaces of the IREs with the adsorption behavior observed during the sensing of the VOCs. To characterize the properties of the ZnO nanowires during the detection of VOCs having a range of functionalities, we classified the VOCs and examined their enrichment factors by comparing the IR signals detected in the presence and absence of the ZnO nanowires. Our results indicate that the ZnO nanowires exhibited better performance for the detection of aromatic-type VOCs than they did for non-aromatic compounds. For quantitative analyses, we examined several compounds for their responses toward varying quantities of injected VOCs. Our results indicate that the IREs treated with ZnO nanowires display acceptable linearity in their standard curves; the linear regression coefficients were higher than 0.995 for a range of volatile compounds.

Keywords: NANOWIRES; ZINC OXIDE; INFRARED; CHEMICAL SENSOR

Document Type: Research article

DOI: http://dx.doi.org/10.1366/0003702054615205

Affiliations: 1: Department of Chemistry, National Chung-Hsing University, Taichung, Taiwan 402 2: Material Research Laboratories, Industrial Technology Research Institute, Chutung, Hsinchu, Taiwan 310 3: Center for Environmental Safety and Health Technology Development, Industrial Technology Research Institute, Chutung, Hsinchu, Taiwan 310

Publication date: 2005-08-01

More about this publication?

• The Society publishes the internationally recognized, peer reviewed journal, Applied Spectroscopy, which is available both in print and online. Subscriptions are included with membership or can be purchased by institutional or corporate organizations. Abstracts may be viewed free of charge.
  
  Previously published as Bulletin (Society for Applied Spectroscopy)
• Editorial Board
• Information for Authors
• Submit a Paper
• Subscribe to this Title
• Membership Information
• Request copyrighted SAS materials
• Spectroscopic Nomenclature
• Focus Compendium
• ingentaconnect is not responsible for the content or availability of external websites

Related content

• In this: publication
• By this: publisher
• In this Subject: Analytical Chemistry
• By this author: Yang, Jyisy ;  Shih, Yu-Ru ;  Chen, I-Cherng ;  Kuo, Chung-I ;  Huang, Yih-Shiaw

Website © Publishing Technology. Article copyright remains with the publisher, society or author(s) as specified within the article.

• Terms and conditions
• Privacy policy
• Information for advertisers