Active Site Engineering of Mn‐Doped CeO <sub>2</sub> Nanozymes: Enhanced Reactivity and Specificity for Colorimetric Detection of Perfluorooctanoic Acid in Waters
redox ratio-enhancing peroxidase-like activity-but also modulates the charge density at metal centers. This electronic regulation strengthens PFOA binding through synergistic electrostatic attraction, Ce─F coordination, and hydrophobic interactions. The colorimetric system was integrated with smartphone-based grayscale analysis, enabling rapid on-site detection of PFOA across diverse real water samples and food matrices, with high recovery rates (93.10-106.75%) and reliable self-calibration. This work provides a facile and robust strategy for mapping PFOA distribution in natural waters.
Authors
- Han‐Qing Yu (ORCID: https://orcid.org/0000-0001-5247-6244)
- Guang‐feng Wang
- Shuang Li
- Ming‐Zheng Gu
- Ze‐Xun Xu
- Yin‐Bo Ban
- Chen‐Fei Li
Institutions
- University of Science and Technology of China (CN)
- Anhui Normal University (CN)
Publication Details
- Journal
- Small
- Published
- 2026-04-26
- DOI
- https://doi.org/10.1002/smll.202513888
- Primary Topic
- Advanced Nanomaterials in Catalysis
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China