Application of biogenic Cu/GO composite material in anodic activation of peroxymonosulfate degradation of Reactive Black 5
This study innovatively employed the extracellular reduction activity of S.oneidensis MR-1(MR-1)bacteria to prepare a Cu/graphene oxide composite material(MR1-Cu-GO)as an electrocatalyst(EC)and persulfate(PMS)synergistic catalyst.Characterization results indicated that the obtained MR1-Cu-GO exhibited a well-defined distribution of small-sized Cu species(with a diameter of approximately 5～10nm),with the predominant forms of Cu species being a mixture of CuCl2,CuO,and Cu2(OH)2CO3.Efficiency tests for RBK5 degradation reveal that the MR1-Cu-GO/PMS,MR1-Cu-GO/EC,and MR1-Cu-GO/EC/PMS systems all exhibit excellent degradation efficiency towards RBK5.Among them,the MR1-Cu-GO/EC/PMS system shows the highest degradation efficiency.Under optimal conditions with an applied current of 50A/m2 and an initial PMS concentration of 3mmol/L,utilizing the generation of active substances such as HO·and SO4·-,the system achieves a 100％RBK5 degradation rate within 30 minutes.
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维普
