Photochemical degradation of phenol solutions on Co3O4 nanorods with sulfate radicals

Yuxian Wang, Li Zhou, Xiaoguang Duan, Hongqi Sun, Ee Lee Tin, Wanqin Jin, Shaobin Wang

Research output: Contribution to journalArticlepeer-review

83 Citations (Scopus)


Photosensitive Co3O4 nanorods were synthesized by a facile one-pot hydrothermal method followed by calcination at different temperatures. The crystal structure, morphology, thermal and textural properties were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and nitrogen sorption isotherms. The performances of the samples in catalytic activation of peroxymonosulfate (PMS) for phenol degradation were found to be dependent on the calcination temperature. Electron paramagnetic resonance (EPR) and classical quenching tests were applied to investigate the mechanism of PMS activation and phenol oxidation. At a proper amount of PMS loading, a synergistic effect of photo- and chemical-oxidation was observed. This study suggested that utilization of sunlight can greatly reduce the chemical consumption in environmental remediation thus providing a cost-effective and more environmentally friendly approach for water treatment.

Original languageEnglish
Pages (from-to)576-584
Number of pages9
JournalCatalysis Today
Publication statusPublished - 4 May 2015
Externally publishedYes


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