Carbon Oxides

Abstract

AbstractIn the late twentieth century, the generation of oxide gases such as CO2, NOx, and SO2 through human activities became recognized as an extremely serious environmental problem. In 1997, at COP3, carbon dioxide (CO2) was also identified as a major greenhouse effect gas and the goal of reducing CO2 emissions was declared an international priority. The development of smart gas-sensing tools is an important step in effectively suppressing CO2 emissions into the atmosphere. Up to now, however, although many different CO2 sensors have been extensively studied, most have not been commercialized, with the exception of devices incorporating IR detection. Even these are expensive and bulky and require pretreatment of the sample gas, and so are difficult to install at the various sites where CO2 gas may be emitted. As a result, it is necessary to develop a compact CO2 gas sensor which can readily be positioned for on-site monitoring.In this chapter, we describe the compact gas sensors which can detect the carbon oxides. Since such compact gas sensors can realize comfortable lives with high safety, they will contribute greatly to our daily lives.KeywordsPorous SiliconSolid ElectrolyteFringe PatternSensor OutputPotentiometric SensorThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.