Abstract
The gas sensing performance of semiconducting metal oxide (SMO) is directly related to its composition for specific electronic structure and surface properties. Well-designed intergation of multicomposites is an effective way to improve its gas sensing performance. The combination of different metal oxides, modification of noble metal catalysts and doping of heteroatoms are three most common composition operating ways. The combination of different metal oxides can form different heterojunctions, leading to the change in electronic structure of materials , exhibiting properties that are distinct from those of a single composition of metal oxide. Precious metal modification usually catalyzes the surface chemical reaction, which in turn affects the gas sensing properties of the material. Heteroatom doping changes the gas sensing properties by affecting the overall defect of the material. Knowledge of the relationship between composition and gas sensing performance will help to design higher-performance metal oxide semiconductor gas sensors.
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Deng, Y. (2019). Semiconducting Metal Oxides: Composition and Sensing Performance. In: Semiconducting Metal Oxides for Gas Sensing. Springer, Singapore. https://doi.org/10.1007/978-981-13-5853-1_4
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