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      Metal Oxide Gas Sensors: Sensitivity and Influencing Factors

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          Abstract

          Conductometric semiconducting metal oxide gas sensors have been widely used and investigated in the detection of gases. Investigations have indicated that the gas sensing process is strongly related to surface reactions, so one of the important parameters of gas sensors, the sensitivity of the metal oxide based materials, will change with the factors influencing the surface reactions, such as chemical components, surface-modification and microstructures of sensing layers, temperature and humidity. In this brief review, attention will be focused on changes of sensitivity of conductometric semiconducting metal oxide gas sensors due to the five factors mentioned above.

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          Metal and metal oxide nanoparticles in chemiresistors: does the nanoscale matter?

          Marion Franke, Tobias J. Koplin, Ulrich Simon (2006)
          Sensor technology is one of the most important key technologies of the future with a constantly increasing number of applications, both in the industrial and in the private sectors. More and more gas sensors are used for the control of technical processes, in environment monitoring, healthcare, and automobiles. Consequently, the development of fast and sensitive gas sensors with small cross sensitivity is the subject of intense research, propelled by strategies based on nanoscience and -technology. Established systems can be improved and novel sensor concepts based on bottom-up approaches show that the sensor properties can be controlled by molecular design. This Review highlights the recent developments and reflects the impact of nanoscience on sensor technology.
          Article 0 comments Cited 259 times – based on 0 reviews     Review now
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            Gas sensors using hierarchical and hollow oxide nanostructures: Overview

            Jong-Heun Lee (2009)
            Article 0 comments Cited 249 times – based on 0 reviews     Review now
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              Metal oxides for solid-state gas sensors: What determines our choice?

              G. Korotcenkov (2007)
              Article 0 comments Cited 230 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (nlm-ta): Sensors (Basel)
                Title: Sensors (Basel, Switzerland)
                Publisher: Molecular Diversity Preservation International (MDPI)
                ISSN (Electronic): 1424-8220
                Publication date Collection: 2010
                Publication date (Electronic): 15 March 2010
                Volume: 10
                Issue: 3
                Pages: 2088-2106
                Affiliations
                Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan, 250061, China; E-Mails: xiaowang412@ 123456163.com (C.W.); 107250458@ 123456qq.com (L.Z.); gaorui1985@ 123456gmail.com (R.G.)
                Author notes
                [* ]Author to whom correspondence should be addressed; E-Mail: yinlw@ 123456sdu.edu.cn ; Tel.: +86-531-8839-6970; Fax: +86-531-8839-6970.
                Article
                Publisher ID: sensors-10-02088
                DOI: 10.3390/s100302088
                PMC ID: 3264469
                PubMed ID: 22294916
                SO-VID: 51f56c68-0ee5-465f-8074-694a40653e21
                Copyright © © 2010 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.
                License:

                This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license ( http://creativecommons.org/licenses/by/3.0/).

                History
                Date received : 17 February 2010
                Date revision received : 10 March 2010
                Date accepted : 14 March 2010
                Categories
                Subject: Review

                ScienceOpen disciplines: Biomedical engineering
                Keywords: sensitivity,surface reaction,metal oxide,gas sensors
                Data availability:
                ScienceOpen disciplines: Biomedical engineering
                Keywords: sensitivity, surface reaction, metal oxide, gas sensors

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