Atomistic Descriptions of Gas-Surface Interactions on Tin Dioxide

Gas–Surface Interactions on Quasicrystals

Gas–surface interactions have been a topic of much study for the past 50 years, both to increase our knowledge of fundamental interactions in matter and to enhance the many useful processes that occur at surfaces. In studies of the fundamental behavior of rare gases at quasicrystal surfaces, it was demonstrated that under certain conditions the gas films adopt the quasicrystalline structure, an...

Nanostructured Tin Dioxide Materials for Gas Sensor Applications

The Effects of Two Thick Film Deposition Methods on Tin Dioxide Gas Sensor Performance

This work demonstrates the variability in performance between SnO(2) thick film gas sensors prepared using two types of film deposition methods. SnO(2) powders were deposited on sensor platforms with and without the use of binders. Three commonly utilized binder recipes were investigated, and a new binder-less deposition procedure was developed and characterized. The binder recipes yielded sens...

Effects of Surface Modification on the Recovery Time and Stability of Nanostructured Tin Oxide Thick Films Gas Sensors

Along with high sensitivity in detecting gas, the response and recovery times of semiconductor gas sensors are of considerable importance for real life applications. In most cases, the recovery time is more than the response time. At the same time, water vapor present in the ambient, is chemisorbed on the tin oxide, SnO2 surface and the water molecules dissociate into hydroxyl species, which ac...

Oxidation of Hydrocarbons on the Surface of Tin Dioxide Chemical Sensors

The paper presents the results of our investigation on the effect of the molecular structure of organic vapors on the characteristics of resistive chemical gas sensors. The sensors were based on tin dioxide and prepared by means of thick film technology. The electrical and catalytic examinations showed that the abstraction of two hydrogen atoms from the organic molecule and formation of a water...