Published April 25, 2007 | Version v1
Journal article Metadata-only

Poly(m-aminobenzene sulfonic acid) functionalized single-walled carbon nanotubes based gas sensor

Creators

  • 1. Department of Chemical and Environmental Engineering, University of California-Riverside, Riverside, CA 92521 (United States)
  • 2. Center for Nanoscale Science and Engineering, University of California-Riverside, Riverside, CA 92521 (United States)

Description

We have demonstrated a NH3, NO2 and water vapour sensor based on poly(m-aminobenzene sulfonic acid) functionalized single-walled carbon nanotube (SWNT-PABS) networks. The SWNT-PABS based sensors were fabricated by simple dispersion of SWNT-PABS on top of pre-fabricated gold electrodes. SWNT-PABS sensors showed excellent sensitivity with ppbv level detection limits (i.e., 100 ppbv for NH3 and 20 ppbv for NO2) at room temperature. The response time was short and the response was totally reversible. The sensitivity could be tuned by adjusting the sensor initial resistance. The sensors were also suitable for monitoring relative humidity in air

Additional details

Identifiers

DOI
10.1088/0957-4484/18/16/165504;
PII
S0957-4484(07)40136-2;

Publishing Information

Journal Title
Nanotechnology (Print)
Journal Volume
18
Journal Issue
16
Journal Page Range
p. 165504
ISSN
0957-4484

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
38089075
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
AMMONIA; ANILINE; CARBON; ELECTRIC CONDUCTIVITY; ELECTRODES; GOLD; HUMIDITY; MONITORING; NANOTUBES; NITROGEN DIOXIDE; SENSITIVITY; SULFONIC ACIDS; WATER VAPOR
Descriptors DEC
AMINES; AROMATICS; CHALCOGENIDES; ELECTRICAL PROPERTIES; ELEMENTS; FLUIDS; GASES; HYDRIDES; HYDROGEN COMPOUNDS; METALS; MOISTURE; NANOSTRUCTURES; NITROGEN COMPOUNDS; NITROGEN HYDRIDES; NITROGEN OXIDES; NONMETALS; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC SULFUR COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; TRANSITION ELEMENTS; VAPORS