Single-Atom Copper@Carbon Nanospheres for Catalytic Ozonation: Parallel Dual Surface Oxidation Pathways for Broad-Spectrum Water Pollutant Removal.

Simple item page
dc.contributor.authorCheng, Y.
dc.contributor.authorZhou, J.
dc.contributor.authorChen, Z.
dc.contributor.authorBi, J.
dc.contributor.authorRen, S.
dc.contributor.authorZhong, S.
dc.contributor.authorYan, P.
dc.contributor.authorLi, Y.
dc.contributor.authorWang, S.
dc.contributor.authorDuan, X.
dc.date.issued2025
dc.descriptionPublished as part of Environmental Science & Technology special issue “Materials Science and Environmental Applicability”.
dc.description.abstractHeterogeneous catalytic ozonation (HCO) is a promising strategy for removing organic pollutants from wastewater, but its practical deployment is limited by the scavenging effects of coexisting constituents (e.g., inorganic anions and humic acids) on hydroxyl radicals (•OH). Herein, we developed atomically dispersed single-atom copper@carbon nanospheres (Cu-NC-3), which effectively decompose ozone (O₃) to generate surface atomic oxygen (*O), as confirmed by the in situ Raman experiments and theoretical calculations. The *O species rapidly degrade 60% of oxalic acid (OA) within 1 min, while protonation of *O produces surfaceconfined hydroxyl radicals (•OHad) that achieve 94.7% removal of benzoic acid (BA) and other aromatic compounds. Compared to ozonation alone, the O₃/Cu-NC-3 system enhances OA and BA removal by 34.5- and 1.5-fold, respectively. Atomic-level Cu dispersion induces carbon defects that enrich surface O₃, and Cu−N₄ coordination sites promote its conversion to *O and •OHad. This dual-oxidation mechanism effectively ensures and enables broadspectrum pollutant removal and exceptional catalytic stability under long-term operation. Therefore, the O₃/Cu-NC-3 system offers a robust and efficient approach for treating real wastewater containing diverse interfering species.
dc.description.statementofresponsibilityYizhen Cheng, Jianshu Zhou, Zhonglin Chen, Jinhong Bi, Shiying Ren, Shuang Zhong, Pengwei Yan, Yabin Li, Shaobin Wang, and Xiaoguang Duan
dc.identifier.citationEnvironmental Science and Technology, 2025; 59(40):21738-21748
dc.identifier.doi10.1021/acs.est.5c07380
dc.identifier.issn0013-936X
dc.identifier.issn1520-5851
dc.identifier.orcidRen, S. [0000-0002-4475-6331]
dc.identifier.orcidZhong, S. [0000-0001-6103-5125]
dc.identifier.orcidWang, S. [0000-0002-1751-9162]
dc.identifier.orcidDuan, X. [0000-0001-9635-5807]
dc.identifier.urihttps://hdl.handle.net/2440/148077
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.relation.granthttp://purl.org/au-research/grants/arc/FT230100526
dc.relation.granthttp://purl.org/au-research/grants/arc/DP230102406
dc.rights© 2025 American Chemical Society
dc.source.urihttps://doi.org/10.1021/acs.est.5c07380
dc.subjectsingle-atom Cu catalyst; catalytic ozonation; surface atomic oxygen; adsorbed hydroxyl radical; water purification
dc.subject.meshCarbon
dc.subject.meshCopper
dc.subject.meshOzone
dc.subject.meshWater Pollutants, Chemical
dc.subject.meshWater Purification
dc.subject.meshOxidation-Reduction
dc.subject.meshCatalysis
dc.subject.meshNanospheres
dc.titleSingle-Atom Copper@Carbon Nanospheres for Catalytic Ozonation: Parallel Dual Surface Oxidation Pathways for Broad-Spectrum Water Pollutant Removal.
dc.typeJournal article
pubs.publication-statusPublished

Files

Collections

Research Outputs