Journal ArticleDOI
Conduction Model of Metal Oxide Gas Sensors
Nicolae Barsan,Udo Weimar +1 more
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TLDR
In this article, the authors provide a frame model that deals with all contributions involved in conduction within a real world sensor, and then summarize the contributions together with their interactions in a general applicable model for real world gas sensors.Abstract:
Tin dioxide is a widely used sensitive material for gas sensors. Many research and development groups in academia and industry are contributing to the increase of (basic) knowledge/(applied) know-how. However, from a systematic point of view the knowledge gaining process seems not to be coherent. One reason is the lack of a general applicable model which combines the basic principles with measurable sensor parameters. The approach in the presented work is to provide a frame model that deals with all contributions involved in conduction within a real world sensor. For doing so, one starts with identifying the different building blocks of a sensor. Afterwards their main inputs are analyzed in combination with the gas reaction involved in sensing. At the end, the contributions are summarized together with their interactions. The work presented here is one step towards a general applicable model for real world gas sensors.read more
Citations
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Electrochemically growth of Pd doped ZnO nanorods on QCM for room temperature VOC sensors
Sadullah Öztürk,Arif Kösemen,Arif Kösemen,Zühal Alpaslan Kösemen,Necmettin Kılınç,Zafer Ziya Öztürk,Michele Penza +6 more
TL;DR: Pristine and various palladium (Pd) doped ZnO nanorods have been synthesized on the quartz crystal microbalance (QCM) for volatile organic compound (VOCs) sensors at room temperature as discussed by the authors.
Journal ArticleDOI
One-step fabrication of SnO2 porous nanofiber gas sensors for sub-ppm H2S detection
TL;DR: In this paper, the authors used a facile electrospinning method followed by heat treatment at 600°C and used to detect H2S concentrations at sub-parts per million level.
Journal ArticleDOI
Sn doping effect on NiO hollow nanofibers based gas sensors about the humidity dependence for triethylamine detection
Jiaqi Yang,Wenjiang Han,Jian Ma,Chong Wang,Kengo Shimanoe,Sumei Zhang,Yanfeng Sun,Pengfei Cheng,Yinglin Wang,Hong Zhang,Geyu Lu +10 more
TL;DR: In this article, a series of Sn-doped NiO hollow nanofibers were prepared through a facile electrospinning process followed by heat treatment, and the results indicated that Sn doping could significantly enhance the gas response towards triethylamine at a relative low temperature.
Journal ArticleDOI
β-Ga2O3 nanowires and thin films for metal oxide semiconductor gas sensors: Sensing mechanisms and performance enhancement strategies
TL;DR: In this article, the relationship between composition, nanostructure, and gas sensing properties of gallium-containing oxidic nanomaterials such as β-Ga2O3 nanowires, surface-modified Ga 2O3, metal-doped metal oxide composite heterostructures, and Ga2O 3/metal oxide composite structures are studied.
Journal ArticleDOI
Carbon-Based Materials for Humidity Sensing: A Short Review.
TL;DR: A survey of recent research dealing with carbonaceous materials used as capacitive and resistive humidity sensors is provided, collecting some successful examples of devices based on carbon nanotubes, graphene, carbon black, carbon fibers, carbon soot, and more recently, biochar produced from agricultural wastes.
References
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Book
The surface science of metal oxides
TL;DR: In this paper, the electronic structure of transition metal-oxide surfaces is described. But the electronic structures of non-transition metaloxide surfaces have not been discussed, and they are not considered in this paper.
Book
The Chemical Physics of Surfaces
S. R. Morrison,Peder J. Estrup +1 more
TL;DR: In this paper, the authors present an approach for the reconstruction of the surface of a solid with respect to the Fermi energy in the band diagram of the solid and its surface.
Journal ArticleDOI
Interactions of tin oxide surface with O2, H2O AND H2
TL;DR: In this paper, the authors investigated the interaction of tin oxide surface with oxygen, water vapor, and hydrogen using temperature-programmed desorption (TPD) chromatograms of oxygen.