Li, Rong-Jian, Lewis, Richard J., Morgan, David J.  ORCID: https://orcid.org/0000-0002-6571-5731, Kitching, Ella, Slater, Thomas ORCID: https://orcid.org/0000-0003-0372-1551 and Hutchings, Graham J. ORCID: https://orcid.org/0000-0001-8885-1560
2025.
Balancing activity and stability in phenol oxidation via in situ H2O2 generation over Fe‐modified AuPd catalysts.
ChemCatChem
17
(22)
, e01264.
10.1002/cctc.202501264
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Abstract
Harnessing the in situ generation of hydrogen peroxide (H2O2) and associated reactive oxygen species (ROS) from molecular hydrogen (H2) and oxygen (O2) offers a powerful and sustainable alternative to conventional oxidative treatments for water purification. In this contribution, we explore the potential of AuPdFe‐based catalysts to achieve the in situ, oxidative degradation of phenol, a widely studied representative organic pollutant. By finely tuning the AuPd/Fe ratio, it is possible to balance H2O2 synthesis with Fe‐mediated ROS generation, achieving efficient phenol degradation and high selectivity toward deeply oxidized products. The optimized catalyst formulation outperforms its bimetallic counterpart by a factor of 10 in conversion efficiency. However, this enhanced activity comes at a cost, with the formation of strongly oxidized species such as formic, oxalic, and malonic acids resulting in the leaching of the active metal components, highlighting a critical trade‐off between catalytic performance and long‐term stability, particularly in the presence of highly concentrated chelating agents.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Research Institutes & Centres > Cardiff Catalysis Institute (CCI) Schools > Chemistry |
| Publisher: | Wiley |
| ISSN: | 1867-3880 |
| Date of First Compliant Deposit: | 24 September 2025 |
| Date of Acceptance: | 9 September 2025 |
| Last Modified: | 10 Dec 2025 12:32 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/181303 |
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