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With the use of sol-gel technology, we obtained ZrO2-xY2O3 powders and thin films (where х = 0, 5, 10, 15, 20, 33, 40, 50 mol%) that are promising for the creation of chemical gas sensors. The phase composition was studied using XRD and Raman spectroscopy. It has been shown that an increase in the content of yttrium oxide from 0 to 50 mol% entails phase changes in the structure of zirconium dioxide—from...
The M&B40 (M = Be, Mg) clusters as a potential sensor for NH3 pollutant detection were investigated with density functional theory (DFT) calculations. The considerable adsorption energy and charge transfers suggest the chemisorption between the M&B40 (M = Be, Mg) and NH3 molecule. The strong interaction between M&B40 (M = Be, Mg) and NH3 molecule is derived from the direct orbital overlaps...
The polyol method has been employed to fabricate a palladium-doped graphene-tin oxide composite as a highly sensitive and selective carbon monoxide gas sensor. The ratio of graphene-SnO2 which is used in this research is 1:1, while the concentration of Pd doping is varied at 0.1%, 0.5%, and 1%. X-ray diffractometry (XRD), scanning electron microscope (SEM), and transmission electron microscope (TEM)...
The phenol-formaldehyde (PF) resin microspheres were firstly used as the template in the sensing electrode (SE) preparation process of sensors based on Y2O3 stabilized ZrO2 (YSZ). The PF resin microspheres were synthesized by a facile hydrothermal method. The high char yield and the few morphological changes of PF resin microspheres before and after sintering at 900 °C indicated the perfect thermal...
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