A Pyrolytic, Carbon-Stabilized, Nanoporous Pd Film for Wide-Range H2 Sensing


  • This work was supported by National Science Foundation (EPS0447479), Department of Energy (DE-FG26-04NT42171), and Army Research Laboratory (W911NF-04-2-0023).


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High-performance H2sensors are becoming increasingly important in detecting and monitoring H2. By using pyrolytic carbon as a transition layer between a Pd film and an anodic aluminum oxide substrate, a nanoporous Pd film sensor is fabricated (see figure) that has a remarkable sensing performance with the ability to detect both dilute and high concentrations of H2 gas quickly and at room temperature.