Hydrogen gas sensing performance of polyaniline/titania/nickel oxide nanocomposite at room temperature

作者：Nasirian Shahruz; Razavi Seyed Yaser

来源：Materials Science and Engineering B-Solid State Materials for Advanced Technology, 2017, 224: 40-47.

DOI：10.1016/j.mseb.2017.07.002

• Hydrogen gas
• Gas sensor
• Semiconducting metal oxides
• Conducting polymer
• Polyaniline/titania/nickel oxide nanocomposite

Monitoring and control of hydrogen gas (H-2) as a green energy resource by smart sensors is necessary for the safe H-2 economy. In this work, we present a resistance-based H-2 sensor based on a polyaniline/titania/nickel oxide nanocomposite (PTNN) thin film. PTNNs were synthesized by an in-situ self-assembly chemical oxidative polymerization of aniline monomers and deposited onto an epoxy glass substrate with Cu-interdigited electrodes. Synthesized samples were structurally and surface morphologically characterized. H-2 sensing behavior of the fabricated sensors was investigated for different concentration of gas, and a significant response (22.1%) and response time (67 s) toward 0.6 vol% H-2 observed at room temperature (25 degrees C) and relative humidity (RH). PTNN sensor with Ti/Ni ratio of 1/3 was exhibited a good Long-term response up to 60 days.

• 出版日期2017-10