Stability of semiconductor sensors based on nanosized SnO2 and Pd/SnO2

Oleksenko, L. P.; Maksymovych, N. P.; Sokovykh, E. V.; Matushko, Igor P.

doi:10.1134/s0036024414050227

Cited by 5 publications

(2 citation statements)

References 16 publications

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“…In order to improve gas sensing performance and reduce operating temperature, many studies have explored the development of new gas sensing materials systems, including noble metal doping, [8–10] surface modification, [11–12] multi‐component hybridization [13] and so on. Precious metal doping is a commonly used modification method.…”

Section: Introductionmentioning

confidence: 99%

Research on Ethanol Sensing Characteristics of Pd/Neck‐Connected‐ZnO Based Chemiresistive Sensors

Sun

Yang

2021

ChemistrySelect

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Different amounts of Pd‐doped neck‐connected‐ZnO (NC‐ZnO) gas sensing materials were successfully synthesized by one‐step hydrothermal method. As a gas sensing material, the sensing performance of Pd‐doped NC‐ZnO has been systematically studied. The results show that palladium doping can improve the performance of NC‐ZnO sensors. NC‐ZnO doped with 5 wt % Pd showed the highest response to ethanol at 250 °C with a response of 311 to 50 ppm ethanol. After palladium doping, due to the catalytic effect of Pd, the ratio of oxygen vacancies on the surface of the material to chemisorption oxygen increases, and the reaction between ethanol molecules and oxygen ions is promoted, thereby greatly improving the gas sensitivity of undoped NC‐ZnO. Therefore, palladium‐doped NC‐ZnO should be a promising method for designing and manufacturing high performance gas sensors.

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Section: Introductionmentioning

confidence: 99%

Research on Ethanol Sensing Characteristics of Pd/Neck‐Connected‐ZnO Based Chemiresistive Sensors

Sun

Yang

2021

ChemistrySelect

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“…The reaction with H 2 molecules takes place on the surfaces of PdO x nanoparticles and not on the SnO 2 [12]. The PdO x nanoparticles change their charge state, which induces a variation of the surface barrier height and therefore leads to a conductance change on the SnO 2 [13]. In this case, the PdO x nanoparticles act as a “receptor” through a specific interaction with H 2 molecules [14], and SnO 2 only has a “transducer” role of the changes induced by the interaction of PdO x nanoparticles with H 2 molecules [15].…”

Section: Introductionmentioning

confidence: 99%

Effects of Chemical State of the Pd Species on H2 Sensing Characteristics of PdOx/SnO2 Based Chemiresistive Sensors

Sun

Yang

et al. 2019

Sensors

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In this paper, the PdOx nanoparticles modified SnO2 are prepared using sputtering and wet chemical methods. The SnO2 nanoparticles are separately added to a concentration of 0.75% to 10% PdCl2 to obtain a PdCl2/SnO2 composite material, which is calcined for 1 to 2 h at the temperatures of 120 °C, 250 °C, 450 °C and 600 °C. The PdOx/SnO2 nanocomposite was characterized by X-ray photoelectron spectroscopy (XPS), X-ray diffractometry (XRD) and transmission electron microscopy (TEM). Microstructural observations revealed PdOx with different chemical states attached to the surface of SnO2. Hydrogen response change tests were performed on the obtained PdOx/SnO2 gas sensing materials. The results show that the high gas sensing performance may be attributed to the contribution of the PdOx-loaded SnO2. In hydrogen, the best sensitivity response was attained at 80 °C, which is 60 times that of pristine SnO2. It clarifies the role of PdOx in the gas sensing mechanisms.

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Rational design of Au/Co3O4-functionalized W18O49 hollow heterostructures with high sensitivity and ultralow limit for triethylamine detection

Zheng

et al. 2019

Sensors and Actuators B: Chemical

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Stability of semiconductor sensors based on nanosized SnO2 and Pd/SnO2

Cited by 5 publications

References 16 publications

Research on Ethanol Sensing Characteristics of Pd/Neck‐Connected‐ZnO Based Chemiresistive Sensors

Research on Ethanol Sensing Characteristics of Pd/Neck‐Connected‐ZnO Based Chemiresistive Sensors

Effects of Chemical State of the Pd Species on H2 Sensing Characteristics of PdOx/SnO2 Based Chemiresistive Sensors

Rational design of Au/Co3O4-functionalized W18O49 hollow heterostructures with high sensitivity and ultralow limit for triethylamine detection

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