Comments on Facilely synthesized cobalt doped hydroxyapatite as hydroxyl promoted peroxymonosulfate activator for degradation of Rhodamine B

In recent years, researchers have devoted themselves to developing composites containing cobalt as highly active heterogeneous catalysts of persulfate. Most of them reported that the catalytic degradation processes of organic pollutants were accompanied by the leaching of cobalt ions, but only a few studies considered the contribution of the dissolved cobalt ion to the degradation of organic compounds. A research paper in Journal of Hazardous Materials reported a study on synthesis, application and catalytic mechanisms of cobalt doped hydroxyapatite (Co-HAP) for Rhodamine B (RhB) degradation. We find that non-main catalytic mechanisms were listed and that the effect of Co-HAP was overestimated.

Automated summary

In recent years, researchers have focused on developing cobalt-containing composites as highly active heterogeneous catalysts for persulfate. While most studies have reported the leaching of cobalt ions during the catalytic degradation of organic pollutants, only a few have considered the contribution of dissolved cobalt ions to the degradation process. A study published in the Journal of Hazardous Materials investigated the synthesis, application, and catalytic mechanisms of cobalt-doped hydroxyapatite (Co-HAP) for the degradation of Rhodamine B (RhB). The study found that non-main catalytic mechanisms were listed and that the effect of Co-HAP was overestimated.