FP7Индивидуална стипендия2011–2013

GrapheneGasSensors · Graphene-Based Ultra-Sensitive Gas Sensors

7РП — „Хора“ (Действия „Мария Кюри“)

Период
2011-06-10 → 2013-06-09
Финансиране от ЕС
280 680 €
Участници
1
Схема
MC-IIF

Линиите свързват координатора с партньорите.

Накратко на български

Графеновите филтри се изследват за откриване и спиране на токсични газове, като например етанол в много ниски концентрации. Тези материали помагат за по-ефективното разпознаване на опасни вещества и предотвратяването на разпространението им в околната среда.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Graphene-Based Ultra-Sensitive Gas Sensors

Aim of this research project was to develop graphene bases toxic filters. As we know that graphene is an outstanding material with excellent characteristics for various applications. As a main task of the project, we have been successful in developing high-quality graphene-based toxic filters. In the last two years under the Marie Curie Fellowship from European Commission, we developed facilities to scale-up the production of graphene and its other derivatives such as graphene oxide. We synthesised graphene using various chemical routes to scale-up the production and quality of the material. We tested the performance of these membranes for filtration of toxic elements in gaseous and liquid forms. We found that these membranes based on graphene block all toxic species in liquid and vapour form. We have seen that our material has the sensitivity to sense a single molecule of gas. We have tested graphene-based papers for sensing and filtering of toxic gases. This excellent material not only senses toxic elements but also blocks them from propagating to the environment, which is a unique behaviour. For example, this material first senses the vapour of ethanol vapours, even in its ppb level, then blocks it from entering into other medium. We have developed full methodology for such experiments. Based on our results, which are due for publication soon, we can say that that we have successfully obtained our expected milestone of developing gas detectors. We are happy to report that we have moved one step further by developing toxic filters during the last two years. Our toxic filter is unique and can be produced on a mass scale. The achievements discussed above are due to be included in a patent application from The University of Manchester, therefore, the intellectual property department at The University of Manchester will not allow us to publish the results and diagrams yet until the patent application has been made. We are very hopeful that our findings will bring breakthrough changes in the field of filtration technology which certainly indicates towards the socio-economic impact of the work done in last two years under the Marie Curie Fellowship. This research will be highly relevant in the field of filtration technologies such as removing organic contaminates, desalination, and toxic filters.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Goal of the proposed research is to transfer the knowledge of experienced researcher to Europe. Detection of minor gas leaks in a hazardous work environment has been a challenging research problem for many decades as it involves health, safety and environmental risks. In this proposed research we will develop graphene based gas sensors with ultrafast response, high sensitivity, great selectivity and high durability to detect the environmental pollutants even in very low concentrations. We intend to target the detection of various toxic gases such as CO2, CO, H2S, NOx, ethanol, and SO2 in ppb level. Graphene is relatively a new material to be used for practical sensor purpose. The idea underlying the selection of graphene for sensor application is its variable conductivity, which makes it available for electron transport phenomena with very high electrical mobility in the presence of oxidizing and reducing gases. The feature of high conductivity will be exploited by using graphene as conductivity-based chemical gas sensors. The proposed study will allow the optimization of sensor parameters for making sensors with good selectivity for target gases by using metal catalyst such as Pt, Pd, and Au on the surface of graphene. The idea underlying the present proposal is that by coating graphene with metal nanoparticles, one could increase the effective surface area and modify the work functions, thereby improving the sensitivity and selectivity of the gas sensors. Successful completion of this research will have enormous benefit to European society through numerous applications, including the reduction of health risks and improvement of public security, detection of environmental toxins and semiconductor processing. Researcher Dr. Rakesh K. Joshi is expert in nanomaterials synthesis and sensor development while Prof. Andre Geim is the discoverer of graphene and its sensor application. Both researchers have worked extensively in graphene and gas sensors.

Оригинален текст от CORDIS (на английски).

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Данни: CORDIS, © Европейски съюз