Multi-hollow spherical CeO2 activates persulfate for heterogeneous degradation of organics

He Zhang, Fang Zhu, Fenting Yu, Sridhar Komarneni, Jianfeng Ma

Research output: Contribution to journalArticlepeer-review


In this work, a multi-hollow spherical CeO2 material was prepared, which when combined with persulfate (PS) efficiently catalyzed the degradation of basic orange II (BOII) under visible light. In the CeO2/PS/Vis system, the degradation rate reached 99.70% within 15 min, which suggested very strong photocatalytic activity. The effects of pH and dissolved oxygen were evaluated to provide a basis for subsequent verification of free radicals. Superoxide radicals (O2·−), hydroxyl radicals (·OH), and oxidative sulfate radicals (SO4·−) generated in the process are conducive to efficient degradation. Afore mentioned radicals were proved by radical scavenging experiments with detection by electron spin-resonance spectroscopy, and the possible degradation pathways are proposed. In addition, after three consecutive degradation cycles, the degradation efficiency of the material was not less than 99%, which proved that the prepared multi-hollow spherical cerium oxide had high stability and recoverability. Graphical abstract: [Figure not available: see fulltext.].

Original languageEnglish (US)
Pages (from-to)2815-2824
Number of pages10
JournalJournal of Materials Research
Issue number17
StatePublished - Sep 14 2022

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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