Efficient Degradation of Chlortetracycline by Graphene Supported Cobalt Oxide Activated Peroxydisulfate: Performances and Mechanisms

Cobalt oxide has good catalytic activity for peroxydisulfate (PDS) activation but poor stability and is vulnerable to inactivation because of agglomeration. In this work, the chlortetracycline (CTC) degradation by catalysis using reduced graphene support cobalt (Co3O4/rGO) composite catalyst was investigated. It found that 86.3% CTC degraded within 120 min in Co3O4/rGO-800/PDS system. The influences dosage, PDS concentration, solution pH, reaction temperature were systematically explored. excellent removal performance could be attributed synergistic effect between adsorption degradation. ≡Co2+ surface functional groups played as active sites catalyze PDS, circulation ≡Co2+/≡Co3+ achieved. Moreover, Co3O4/rGO-800 showed satisfactory reusability after three cycles. This research can provide useful information development efficient catalysts facilitate insights into mechanism.