Supersonically sprayed gas- and water-sensing MIL-100(Fe) films

Jong Gun Lee, Bhavana N. Joshi, Edmund Samuel, Seongpil An, Mark T. Swihart, Ji Sun Lee, Young Kyu Hwang, Jong San Chang, Sam S. Yoon

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


Highly uniform, mechanically stable, dense, and water-adsorbing MIL-100(Fe) films were fabricated via supersonic spraying, a rapid, high-throughput, and scalable method compatible with roll-to-roll processing. The film surface area (1667 m2 g−1) was comparable to that of the nanoparticles from which it was prepared (2009 m2 g−1), and was higher than previously reported values for MIL-100(Fe) films. The gas and water adsorption abilities of the film were tested by nitrogen physisorption and water adsorption at 30 °C. The supersonically sprayed film was mechanically resistant up to a critical scratching load of 1.84 N, higher than the critical scratchability loads of dip-coated or spin-coated films. In humidity-sensing applications, films that incorporated conductive Ag nanowires were highly responsive to environmental humidity, demonstrating applicability as water vapor sensors. The fabricated films were characterized by X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, and atomic force microscopy.

Original languageEnglish
Pages (from-to)996-1001
Number of pages6
JournalJournal of Alloys and Compounds
Publication statusPublished - 2017 Oct 25

Bibliographical note

Funding Information:
This research was supported by Global Frontier Program through the Global Frontier Hybrid Interface Materials (GFHIM) of the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (2013M3A6B1078879), NRF-2016M1A2A2936760, and NRF-2017R1A2B4005639.


  • Humidity sensor
  • MIL-100
  • Supersonic spraying
  • Water adsorption

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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