Published September 12, 2014 | Version v1
Journal article Metadata-only

Selective response inversion to NO2 and acetic acid in ZnO and CdS nanocomposite gas sensor

Creators

  • 1. IMEM-CNR, Parco Area delle Scienze 37/A, Parma-43124 (Italy)

Description

High sensitivity zinc oxide (ZnO) tetrapods (TPs) have been functionalized by nucleating cadmium sulphide (CdS) nanoparticles (NPs) directly on their surface with a spotted coverage thanks to an optimized synthesis in dimethylformamide (DMF). The obtained hybrid coupled material has been used to realize a gas sensing device with a highly porous nanostructured network, in which the proper alternation of ZnO-TPs and CdS-NPs gives rise to unconventional chemoresistive behaviours. Among the different tested gases and vapours, the sensor showed a unique fingerprint response-inversion between 300 °C and 400 °C only for nitrogen dioxide (NO2) and acetic acid (CH3COOH). (paper)

Availability note (English)

Available from http://dx.doi.org/10.1088/0957-4484/25/36/365502

Additional details

Identifiers

DOI
10.1088/0957-4484/25/36/365502;

Publishing Information

Journal Title
Nanotechnology (Print)
Journal Volume
25
Journal Issue
36
Journal Page Range
[6 p.]
ISSN
0957-4484

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
46082767
Subject category
S77: NANOSCIENCE AND NANOTECHNOLOGY; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ACETIC ACID; CADMIUM SULFIDES; FORMAMIDE; NANOPARTICLES; NANOSTRUCTURES; NITROGEN DIOXIDE; POROUS MATERIALS; SENSITIVITY; SENSORS; SYNTHESIS; VAPORS; ZINC OXIDES
Descriptors DEC
AMIDES; CADMIUM COMPOUNDS; CARBOXYLIC ACIDS; CHALCOGENIDES; FLUIDS; GASES; INORGANIC PHOSPHORS; MATERIALS; MONOCARBOXYLIC ACIDS; NITROGEN COMPOUNDS; NITROGEN OXIDES; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PARTICLES; PHOSPHORS; SULFIDES; SULFUR COMPOUNDS; ZINC COMPOUNDS