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- W2783271719 abstract "Noble metal-semiconductor gas sensors have attached much attention owing to its high sensitivity and excellent selectivity. In this work, non-stoichiometry urchin-like Pd-W18O49 nanostructures are developed for gas sensing applications. Such hierarchical nanostructures were synthesized by two-step approach including a hydrothermal reaction and a subsequent incipient wetness impregnation process. The high sensitivity and excellent selectivity distinguish this sensor from the traditional Pd-WO3 sensor. An insight into the outstanding performance of Pd-W18O49 is provided by contrasting the sensing characteristics of W18O49 and Pd-WO3, which exhibit lower selectivity and response to hydrogen. By comparison, the observed response of Pd-W18O49 sensor is up to 1600– in 0.1 vol% hydrogen at a low working temperature of 100 °C. The excellent and enhanced H2 sensing performances of Pd-W18O49 sensor can be attributed to its novel hierarchical structure, abundant oxygen vacancies, and the catalytic activity of Pd nanoparticles." @default.
- W2783271719 created "2018-01-26" @default.
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- W2783271719 date "2018-05-01" @default.
- W2783271719 modified "2023-10-07" @default.
- W2783271719 title "Enhanced H2 gas sensing properties by Pd-loaded urchin-like W18O49 hierarchical nanostructures" @default.
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- W2783271719 doi "https://doi.org/10.1016/j.snb.2018.01.104" @default.
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