Estudio de las propiedades eléctricas y ópticas de sensores de gases en la detección de contaminantes atmosféricos y gases de efecto invernadero
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2024
Defense date
09/2024
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Abstract
La presencia de contaminantes atmosféricos y de gases de efecto invernadero supone un problema actual de gran relevancia, tanto en la salud de las personas, como para el medio ambiente. Es por ello que, surge la necesidad de medir la cantidad de estos agentes presentes en el aire. Para ello se emplean diferentes sensores de gases. En este Trabajo de Fin de Master, se desarrollarán sensores de gases de tipo resistivo, utilizando la técnica de drop-casting y fabricados a partir de nanomateriales de semiconductores de óxidos metálicos, como el óxido de estaño, el óxido de cinco el óxido de titanio, utilizando como dopante el terbio. También se estudiarán las propiedades eléctricas y ópticas de los sensores desarrollados, con el fin de poder aplicarlos en la detección agentes contaminantes, como el monóxido de carbono y el dióxido de nitrógeno, y en la detección de gases de efecto invernadero, como el dióxido de carbono o el metano. De esta forma se intentará desarrollar sensores, que permitan medir la presencia en el aire de los distintos gases de estudio de manera efectiva.
The presence of atmospheric pollutants and greenhouse gases is a current issue of great rele vance, both for human health and for the environment. This is why there is an increasing need to measure the amount of these agents present in the air. Different gas sensors are used for this purpose. In this Master’s Thesis, resistive gas sensors will be developed using the drop-casting technique and made from semiconductor nanomaterials such as tin oxide, zinc oxide, or titanium oxide, with terbium as a dopant. The electrical and optical properties of the developed sensors will also be studied to apply them in detecting pollutants such as carbon monoxide and nitrogen dioxide, as well as greenhouse gases like carbon dioxide and methane. The aim is to develop sensors that effectively measure the presence of these various gases in the air.
The presence of atmospheric pollutants and greenhouse gases is a current issue of great rele vance, both for human health and for the environment. This is why there is an increasing need to measure the amount of these agents present in the air. Different gas sensors are used for this purpose. In this Master’s Thesis, resistive gas sensors will be developed using the drop-casting technique and made from semiconductor nanomaterials such as tin oxide, zinc oxide, or titanium oxide, with terbium as a dopant. The electrical and optical properties of the developed sensors will also be studied to apply them in detecting pollutants such as carbon monoxide and nitrogen dioxide, as well as greenhouse gases like carbon dioxide and methane. The aim is to develop sensors that effectively measure the presence of these various gases in the air.
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Coordinador del Máster: Tejedor Álvarez, Luis Angel.
TFM realizado en colaboración con el Instituto de Tecnologías Físicas y de la Información del CSIC