Single-Crystal Pt-Decorated WO₃ Ultrathin Films: A Platform for Sub-ppm Hydrogen Sensing at Room Temperature.

ABSTRACT: Hydrogen-related technologies are rapidly developing, driven by the necessity of efficient and high-density energy storage. This poses new challenges to the detection of dangerous gases, in particular the realization of cheap, sensitive, and fast hydrogen sensors. Several materials are being studied for this application, but most present critical bottlenecks, such as high operational temperature, low sensitivity, slow response time, and/or complex fabrication procedures. Here, we demonstrate that WO₃ in the form of single-crystal, ultrathin films with a Pt catalyst allows high-performance sensing of H₂ gas at room temperature. Thanks to the high electrical resistance in the pristine state, this material is able to detect hydrogen concentrations down to 1 ppm near room

SUBMITTER: Mattoni G 

PROVIDER: S-EPMC6066757 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature