Highly Sensitive Detection of Hydrogen Gas Using Nanoporous Composites of Halloysite Nanotubes and Palladium

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Hydrogen (H2) plays a crucial role in various sectors, from energy to medicine. Its detection is vital in safety, storage, transportation, and in tracing its production in various physiochemical processes. Existing hydrogen sensors, though effective, come with challenges like high power consumption, the need for complex fabrication tools, or operational constraints. Addressing these challenges can lead to enhanced applications and efficiency.


This invention from the University of Nevada, Reno revolves around a resistive H2 detector made by reducing palladium (Pd) precursors onto the surface of halloysite nanotubes (HNTs), creating nanoporous composites. The solution of Pd-HNT is deposited onto an interdigitated microelectrode surface, which is then dried. This design facilitates:

  • High sensitivity with a low limit H2 detection of 27 ppb in N2 and less than 10 ppm in air.
  • A significant distinction between H2 and other gases, ensuring high selectivity.
  • Stability across varying temperatures (room temperature to 50°C).
  • The nanoporous composites exhibit a vast surface area and high porosity, enabling effective detection and reaction with H2.


  • High Sensitivity
  • Excellent selectivity
  • Simple fabrication


  • Hydrogen Energy Industry: Monitoring and ensuring safety in production, storage, and transportation.
  • Medicine: Monitoring hydrogen output in treatments or surgeries where its release is indicative of specific processes.
  • Battery Safety: Tracing H2 emissions from lithium-ion batteries, assisting in fire prevention and safety measures.
  • Chemical Industry: Monitoring H2 as a byproduct in various processes.
  • Research & Development: Assisting in studies related to H2 interaction with various substances.
Patent Information:
For Information, Contact:
Ray Siripirom
Senior Licensing Associate
University of Nevada, Reno
Xiaoshan Zhu
Mustafa Hadj Nacer
Vala Kafil
Miles Greiner