Publication

Study of the surface-ruthenated SnO2/MWCNTs nanocomposite thick-film gas sensors

László Forró, Arnaud Magrez, Endre Horvath, Klara Hernadi
2013
Journal Articles

Abstract

Multi-walled carbon nanotubes (MWCNTs) were successfully coated with tin-dioxide (SnO2) nanopartides using both hydrothermal process and sol-gel technique under different solvent conditions. The obtained MWCNTs/SnO2 nanocomposites had the weight ratio of the components 1:4, 1:8 and 1:50, respectively. The as-prepared nanocomposites were characterized in detail using scanning electron microscopy (SEM) and X-ray powder diffraction (XRD). Gas-sensor structures are developed on the base of these materials. High response to methanol and ethanol vapour as well as i-butane gas at 200 degrees C operating temperature has been revealed for the functionalized with Ru nanocomposite thick-film sensor structures having the ratio of the components 1:8 and 1:50. The structures having 1:4 ratio of components exhibit the best selectivity toward methanol and ethanol vapors. (c) 2012 Elsevier B.V. All rights reserved.

Official source

https://infoscience.epfl.ch/entities/publication/bde66ef1-2ccc-424d-a846-d083f01fd0fa

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László Forró, Arnaud Magrez, Endre Horvath, Klara Hernadi
2013
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/bde66ef1-2ccc-424d-a846-d083f01fd0fa

About this result

Related concepts (28)

Solvent

A solvent (from the Latin solvō, "loosen, untie, solve") is a substance that dissolves a solute, resulting in a solution. A solvent is usually a liquid but can also be a solid, a gas, or a supercritical fluid. Water is a solvent for polar molecules and the most common solvent used by living things; all the ions and proteins in a cell are dissolved in water within the cell. Major uses of solvents are in paints, paint removers, inks, and dry cleaning. Specific uses for organic solvents are in dry cleaning (e.

Scanning electron microscope

A scanning electron microscope (SEM) is a type of electron microscope that produces images of a sample by scanning the surface with a focused beam of electrons. The electrons interact with atoms in the sample, producing various signals that contain information about the surface topography and composition of the sample. The electron beam is scanned in a raster scan pattern, and the position of the beam is combined with the intensity of the detected signal to produce an image.

Volatility (chemistry)

In chemistry, volatility is a material quality which describes how readily a substance vaporizes. At a given temperature and pressure, a substance with high volatility is more likely to exist as a vapour, while a substance with low volatility is more likely to be a liquid or solid. Volatility can also describe the tendency of a vapor to condense into a liquid or solid; less volatile substances will more readily condense from a vapor than highly volatile ones.

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