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Preparation of a Highly-Efficient Electro-Fenton Cathode Material for H2O2 Generation and Its Electrochemical Performance in COD Removal
Zhang, Hongli; Xu, Zeyu; Wang, Shaoliang; Fan, Xinzhuang
2020-11-01
Source PublicationINTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
Volume15Issue:11Pages:12462-12474
AbstractAs a typical cathode material for electro-Fenton, the surface active compositions and pore structure of the polyacrylonitrile-based carbon fibers (PAN-CFs) are important to ensure the electrochemical activity of oxygen reduction reaction (ORR) and the corresponding electro-Fenton efficiency. In order to further improve the electro-generating efficiency of H2O2, PAN-based carbon nanofibers (PAN-CNFs) with high surface area, good conductivity and excellent electrochemical activity were prepared through the electrospinning, as well as the following graphitization and activation treatment. Results show that the as-prepared NH3 modified PAN-CNFs (N-PAN-CNFs) have high selectivity and good electrochemical stability for the two-electron ORR in the acidic solution, and it is worth noting that the electro-generating efficiency of H2O2 is high up to 98%. In addition, the electrocatalytic oxidation of phenol solution with the concentration of 100 mg L-1 is investigated with N-PAN-CNFs as the cathode material of electro-Fenton. It is found that the CODCr and average current efficiency after the electro-Fenton treatment for 3 h are high up to 85% and 80% respectively, while the corresponding energy consumption is just 25.6 kWh kg(-1) COD. The excellent electrochemical performance of N-PAN-CNFs might be ascribed to the reasonable pore structure, high surface area (89.7 m(2) g(-1)), good conductivity (93.7 S cm(-1)) and abundant graphitic-N and pyrrolic-N (high up to 62%). Therefore, N-PAN-CNFs are expected to be widely used as efficient cathode materials for the electro-Fenton in the sewage treatment.
DOI10.20964/2020.12.30
WOS IDWOS:000591930300139
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/155660
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Zhang, Hongli,Xu, Zeyu,Wang, Shaoliang,et al. Preparation of a Highly-Efficient Electro-Fenton Cathode Material for H2O2 Generation and Its Electrochemical Performance in COD Removal[J]. INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,2020,15(11):12462-12474.
APA Zhang, Hongli,Xu, Zeyu,Wang, Shaoliang,&Fan, Xinzhuang.(2020).Preparation of a Highly-Efficient Electro-Fenton Cathode Material for H2O2 Generation and Its Electrochemical Performance in COD Removal.INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,15(11),12462-12474.
MLA Zhang, Hongli,et al."Preparation of a Highly-Efficient Electro-Fenton Cathode Material for H2O2 Generation and Its Electrochemical Performance in COD Removal".INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE 15.11(2020):12462-12474.
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