Electrogeneration of HO utilizing anodic O on polytetrafluoroethylene-modified cathode in flow-through reactor.

Journal: Electrochemistry communications
Published Date: Nov 18, 2020

Abstract

Efficient electrogeneration of hydrogen peroxide (HO) is critical for treatment of refractory pollutants by the electro-Fenton process. An effective strategy is developed by combining a flow-through reactor with a poly- tetrafluoroethylene (PTFE)-modified graphite felt cathode. In this design, anodic oxygen is directly used for efficient HO generation at the modified cathode. Experimental results show that the modified cathode with the optimum PTFE content can produce 29.6 mg/L of HO, which is 16 times higher than the unmodified graphite felt cathode for a flow rate of 3 mL/min. Maximum HO production, up to 30.7 mg/L, was obtained under the following conditions: 120 mA, 3 mL/min, initial pH 13, no external aeration.

Authors

  • Yuwei Zhao
    Department of Civil and Environmental Engineering, Northeastern University, Boston, 02115, United States.
  • Jiaxin Cui
    Department of Civil and Environmental Engineering, Northeastern University, Boston, 02115, United States.
  • Wei Zhou
    Department of Eye Function Laboratory, Eye Hospital, China Academy of Chinese Medical Sciences, Beijing, China.
  • Shayan Hojabri
    Department of Civil and Environmental Engineering, Northeastern University, Boston, 02115, United States.
  • Akram N Alshawabkeh
    Department of Civil and Environmental Engineering, Northeastern University, Boston, 02115, United States.

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