A new study from Ritsumeikan University reveals a highly efficient method to break down PFAS using surface-engineered zinc oxide nanocrystals under mild, low-energy conditions.
The research published in Chemical Science on November 5 addresses one of the most persistent challenges on how to degrade PFAS without harsh chemicals or extreme energy input.
The study was led by Yoichi Kobayashi from Ritsumeikan University in Japan and assisted by Shuhei Kanao. They explored the possibility of using zinc oxide (ZnO) nanocrystals (NCs) in the PFAS-defluorination process.
NCs, known for their photocatalytic properties, can use light to generate reactive species that degrade organic pollutants. NCs capped with different ligands were used for their enhanced efficiency.
The study showed:
- Ligand-capped ZnO nanocrystals achieved up to 92% defluorination of PFOS after 24 hours under near-UV light
- A single ZnO nanocrystal was shown to break up to 8250 carbon-fluorine (C-F) bonds, demonstrating strong reusability
- The reaction occurs at room temperature and does not require high-energy light sources, making it more practical than existing PFAS degradation methods.
“PFAS pollution is a worldwide concern, and this simple NC-based technology could contribute significantly to tackling this issue,” Kobayashi said.
NGWA has long been an industry leader in providing PFAS research, education, and resources to the public and scientific communities. Click here to learn more. The Association will host, PFAS in the Age of Uncertainty Conference, March 9-10, 2026, in San Antonio, Texas.