Maximized nanojunctions in Pd/SnO2 nanoparticles for ultrasensitive and rapid H2 detection

Gi Baek Nam, Tae Hoon Eom, Sung Hwan Cho, Yeong Jae Kim, Sungkyun Choi, Woo Seok Cheon, Seon Ju Park, Mohammadreza Shokouhimehr, Jun Min Suh, Jung El Ryu, Sohyeon Park, Hoon Kee Park, Hyuk Jin Kim, Seung Ju Kim, Soo Min Lee, Sung Hyuk Park, Liang Shiming, Mi Hwa Oh, Yun Suk Huh, Ho Won Jang

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

H2 energy has gained massive attraction as a promising candidate for future energy sources. However, the explosive properties of H2 arouse significant safety concerns, emphasizing the need for the development of real-time H2 detection systems. This study presents the fabrication of an ultrasensitive and selective H2 gas sensor using Pd/SnO2 nanoparticles (NPs) synthesized through the utilization of Pluronic F-127. Pluronic F-127 improves the dispersion and regulates the particle size of Pd NPs. Pd/SnO2 NPs, which are comprised of numerous nanojunctions, exhibit H2 response of 27,190 and a response time of 3 s when exposed to 50 ppm of H2 at 100 °C. The practical applicability of Pd/SnO2 NPs was demonstrated by detecting H2 generated from water-splitting cells, exhibiting promising features for H2 energy industries. Overall, the synthetic method of this study proposes advanced strategies for development of sensing materials with maximized gas sensing performance.

Original languageEnglish
Article number153116
JournalChemical Engineering Journal
Volume494
DOIs
StatePublished - 15 Aug 2024

Bibliographical note

Publisher Copyright:
© 2024 Elsevier B.V.

Keywords

  • Chemoresistive gas sensor
  • Hydrogen detection
  • Pd catalyst
  • Pluronic F-127
  • Tin oxide nanoparticles

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