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Highly Sensitive Hydrogen Gas Sensors Based on Gold Nanoparticle Decorated Zinc Oxide Nanosheets
- Source :
- Procedia Engineering. 168:321-324
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- Highly sensitive gold nanoparticle decorated zinc oxide nanosheet gas sensors have been fabricated using simple and rapid chemical methods capable of producing a normalised current gain of 2.54 (at 10V) in dry air containing 2.5ppm of hydrogen gas at 200C and a current gain of 382.53 under 125ppm. Compared to undecorated sheet based sensors where a response of 1.24 was observed under 125ppm at 200C a massive relative increase in signal is observed. The zinc oxide nanosheets are produced via a previously reported simple microwave assisted hydrothermal growth method and gold nanoparticles with mean diameter of 5nm synthesized via a simple sodium borohydride reduction of hydrogen tetrachloroaurate in the presence of polyvinylpyrrolidone (PVP) followed by drop casting onto a pre-patterned aluminium oxide substrate.
- Subjects :
- Materials science
Hydrogen
Inorganic chemistry
Substrate (chemistry)
chemistry.chemical_element
Nanoparticle
02 engineering and technology
General Medicine
Zinc
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Sodium borohydride
chemistry.chemical_compound
chemistry
Colloidal gold
Aluminium oxide
0210 nano-technology
Engineering(all)
Nanosheet
Subjects
Details
- ISSN :
- 18777058
- Volume :
- 168
- Database :
- OpenAIRE
- Journal :
- Procedia Engineering
- Accession number :
- edsair.doi.dedup.....56d50fd90111ecbba04bfbad1b838409