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| Application of biogenic Cu/GO composite material in anodic activation of peroxymonosulfate degradation of Reactive Black 5 |
| GUO Ya-ping, CHEN Xiao-qi, ZHANG Fan, WU Wen-ting, ZHANG Qian |
| Department of Environmental Science and Engineering, Huaqiao University, Fujian Province Engineering Research Center of Industrial Wastewater Biochemical Treatment, Xiamen 361021, China |
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Abstract 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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Received: 11 May 2024
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