Study on the Loadings of Co3O4 Supported on rGO as the Catalyst for Degradation of Orange II in Water by AOPs Based on Sulfate Radicals
2014 ◽
Vol 955-959
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pp. 62-65
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Keyword(s):
X Ray
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A variety of loadings of Cobalt oxide (Co3O4) was successfully supported on the reduced graphene (Co3O4/rGO) as the catalyst to activate peroxymonosulfate (PMS) to generate sulfate radicals (SO4−•) for degrading Orange II in water. The crystal structure of Co3O4/rGO with different loadings was characterized by X-ray diffraction (XRD), and their catalytic activity was compared in the same conditions. The result showed that the catalyst has an optimum Co3O4 loading. Using the 70.7% loading of Co3O4 in Co3O4/rGO as the catalyst, 100% decomposition could be achieved within 4 min with 1 mM Orange II, 0.05g/L catalyst, and 10 mM PMS.