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• W2903800528 abstract "Abstract In this work,we report a novel method for recovery of sulphur poisoned platinum/platinum oxide (Pt-PtOx) core-shell nanowire sensor using UV irradiation.The optimum core to shell thickness ratio and the operating conditions are the key factors to achieve a high-performance H2S sensor,described in this report.The fabricated core-shell nanowire sensor demonstrated response of 6.4% at 1 ppm H2S with detection limit of 10 ppb at 150 °C operating temperature. The sensor undergoes prominent time-dependent poisoning at H2S exposure of 3 ppm when operated at 150 °C due to sensor surface contamination by sulphur,later confirmed by XPS analysis. Ultraviolet light at two wavelengths, 365 nm, and 248 nm is investigated to recover the poisoned Pt-PtOx surface.UV irradiation at 248 nm for 5 min results in sensor recovery, confirmed by further H2S sensing characterization and XPS studies on the recovered sensor. To the best of our knowledge, this is one of the first reports on UV irradiation for recovery of sulphur poisoned metal-oxide surfaces." @default.
• W2903800528 created "2018-12-22" @default.
• W2903800528 creator A5042967166 @default.
• W2903800528 date "2019-04-01" @default.
• W2903800528 modified "2023-09-24" @default.
• W2903800528 title "Enhanced sensor life using UV treatment of sulphur poisoned Pt-PtOx" @default.
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• W2903800528 doi "https://doi.org/10.1016/j.materresbull.2018.12.021" @default.
• W2903800528 hasPublicationYear "2019" @default.
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