Low-Temperature Processing and Optical Hydrogen Gas Sensing Property of Pd-Loaded Titania Coating onto Flexible Plastic Substrate

Abstract:

Transparent titania coating was formed onto a flexible polycarbonate plastic substrate by low-temperature fabrication process below 100 °C consisting of a sol-gel technique and a hot water treatment method. The titania coating with high transparency showed a good photocatalytic activity under ultraviolet (UV) light irradiation. Palladium metal acts as a catalyst for dissociative adsorption of hydrogen gas at room temperature under an atmospheric pressure. The palladium catalyst was deposited on the photocatalytic titania coating by a photodeposition process at room temperature under UV-light irradiation. The flexible polycarbonate plastic sheet with semitransparent palladium-deposited titania coating works as an optically readable hydrogen gas sensor which can operate at room temperature.

• Periodical: Key Engineering Materials (Volume 566)
• Pages: 249-252
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.566.249
• Online since: July 2013
• Authors: Junichi Hamagami, Shohei Onimaru, Ryo Araki, G. Kawamura, Atsunori Matsuda
• Keywords: Flexible Plastic Substrate, Low Temperature Processing, Optical Hydrogen Gas Sensor, Palladium Catalyst, Titania Coating

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