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Related Experiment Video

Updated: Sep 23, 2025

Biofunctionalized Prussian Blue Nanoparticles for Multimodal Molecular Imaging Applications
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Porous Colloidal Nanoparticles as Injectable Multimodal Contrast Agents for Enhanced Geophysical Sensing.

Quin R S Miller1, Mathias Pohl2, Kurt Livo2

  • 1Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States.

ACS Applied Materials & Interfaces
|May 16, 2022
PubMed
Summary
This summary is machine-generated.

Metal-organic frameworks (MOFs) as nanofluids enhance geophysical monitoring for carbon capture and energy extraction. These MOF nanofluids improve downhole logging tools for better subsurface fluid tracking and reservoir management.

Keywords:
NMRconductivitycore injectiongeophysicalmetal−organic frameworknanofluidnear-wellbore loggingpetrophysical

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Area of Science:

  • Geophysics
  • Materials Science
  • Subsurface Engineering

Background:

  • Injecting fluids underground is vital for carbon capture and sustainable energy extraction.
  • Metal-organic frameworks (MOFs) can improve seismic monitoring for subsurface operations.
  • MOFs' absorption of low-frequency seismic waves aids in tracking fluids and verifying containment.

Purpose of the Study:

  • To demonstrate that water-based MOF colloidal suspensions (nanofluids) act as multimodal geophysical contrast agents.
  • To assess the potential of specific MOF nanofluids (MIL-101(Cr), ZIF-8, UiO-66) for enhancing near-wellbore logging tools.
  • To investigate the impact of MOF nanofluids on geophysical signatures in porous media.

Main Methods:

  • Characterization of Cr/Zn/Zr MOF nanofluids using complex conductivity and low-field nuclear magnetic resonance (NMR).
  • Small- and wide-angle X-ray scattering to confirm phase stability and nanoparticle structure.
  • Low-field NMR measurements of MOF nanofluid injection into Berea sandstone.

Main Results:

  • MIL-101(Cr), ZIF-8, and UiO-66 nanofluids exhibit distinct geophysical signatures relevant to field technologies.
  • Characterization confirmed the phase stability and fractal nature of MIL-101(Cr) nanoparticles.
  • MOFs significantly influenced fluid relaxation times in sandstone, enhancing pathway mapping.

Conclusions:

  • MOF nanofluids are effective multimodal geophysical contrast agents for near-wellbore monitoring.
  • These nanofluids can enhance downhole logging tools for tracking CO2 injection and subsurface processes.
  • MOFs advance subsurface energy technologies by improving the mapping of transport pathways.