Electronic nose for detection of toxic volatile organic compounds in air

Zhenzhen Xie, Mandapati V.Ramakrishnam Raju, Benjamin S. Brown, Andrew C. Stewart, Michael H. Nantz, Xiao An Fu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

We demonstrate a general approach using novel thiols to functionalize gold nanoparticles for fabricating gas sensors to detect toxic volatile organic compounds (VOCs) in air. Poor selectivity and low sensitivity are common challenges for chemiresistor-based gas sensors. Gold nanoparticle-based gas sensors have the advantage of accommodating thiols for surface modification. The designed thiols with a molecular recognition motif for interaction with target analytes dramatically increase both selectivity and sensitivity of the sensors. The sensors showed a linear response relationship in a broad vapor concentration range from 0.1 ppb to 1000 ppm for various VOCs. A sensor array of the thiol functionalized gold nanoparticles enables analysis of target VOCs.

Original languageEnglish (US)
Title of host publicationTRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1425-1428
Number of pages4
ISBN (Electronic)9781538627310
DOIs
StatePublished - Jul 26 2017
Event19th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2017 - Kaohsiung, Taiwan, Province of China
Duration: Jun 18 2017Jun 22 2017

Publication series

NameTRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems

Other

Other19th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2017
Country/TerritoryTaiwan, Province of China
CityKaohsiung
Period6/18/176/22/17

Bibliographical note

Funding Information:
We gratefully acknowledge the University of Louisville for support of this research through an Internal Research Grant. BSB was supported by a NSF REU grant, while ACS was supported by a Summer Undergraduate Research Grant from the University of Louisville.

Publisher Copyright:
© 2017 IEEE.

Keywords

  • Gas sensors
  • acetone
  • gold nanoparticles
  • molecular recognition motif
  • thiols
  • volatile organic compounds

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