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- W3089288300 abstract "Well aligned TiO2 nanotube arrays have been synthesized via electrochemical anodization, and Pd-based nanoparticles (NPs) were decorated by electrodeposition with the aid of UV irradiation. A new back-to-back Schottky barrier diode (SBD) was formed by connecting with Ag–(Pd decorated TiO2)–Ti. We found that such an SBD sensor has excellent hydrogen (H2) sensing performances at a working temperature of 80 °C, with a detection limit as low as 1 ppm as well as a quick response time within 10 s at a low bias voltage (0.025 V). I–V curves and electrochemical impedance spectroscopy analysis demonstrate a typical rectification characteristic of SBD as well as a dramatic decrease of the barrier height of SBD during the H2 sensing process. The high H2 sensing performance of a Pd-based NP decorated TiO2 nanotube array film SBD could be attributed to the synergism of the highly ordered nano-porous configurations and the Pd-based NP (with a high catalytic active metallic Pd nanoshell layer) decoration providing the enhancement of H2 spillover effect (and/or electronic sensitization) related redox processes." @default.
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- W3089288300 date "2020-09-25" @default.
- W3089288300 modified "2023-10-01" @default.
- W3089288300 title "Pd decorated TiO2 nanotube array Schottky barrier diodes for efficient hydrogen sensing application" @default.
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- W3089288300 doi "https://doi.org/10.1063/5.0011895" @default.
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