Effects of Chemical State of the Pd Species on H Sensing Characteristics of PdO/SnO Based Chemiresistive Sensors
Sensors (Switzerland), ISSN: 1424-8220, Vol: 19, Issue: 14
2019
- 15Citations
- 12Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Article Description
In this paper, the PdO nanoparticles modified SnO are prepared using sputtering and wet chemical methods. The SnO nanoparticles are separately added to a concentration of 0.75% to 10% PdCl to obtain a PdCl/SnO composite material, which is calcined for 1 to 2 h at the temperatures of 120 °C, 250 °C, 450 °C and 600 °C. The PdO/SnO nanocomposite was characterized by X-ray photoelectron spectroscopy (XPS), X-ray diffractometry (XRD) and transmission electron microscopy (TEM). Microstructural observations revealed PdO with different chemical states attached to the surface of SnO. Hydrogen response change tests were performed on the obtained PdO/SnO gas sensing materials. The results show that the high gas sensing performance may be attributed to the contribution of the PdO-loaded SnO. In hydrogen, the best sensitivity response was attained at 80 °C, which is 60 times that of pristine SnO. It clarifies the role of PdO in the gas sensing mechanisms.
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