Novel Gas Diffusion Electrode System for Effective Production of Hydrogen Peroxide

Abstract:

Hydrogen peroxide production via cathodic reduction of oxygen on self-made gas diffusion electrode was investigated in an undivided electrochemical system. The effects of mass ratio between graphite and PTFE in cathode, the calcination temperature, current density, pH, and plate distance on hydrogen peroxide generation were discussed. The results showed that the self-made gas diffusion cathode had high catalyze capacity for production of hydrogen peroxide using cathodic oxygen-reducing reaction. The hydrogen peroxide concentration could reach 80.52 mg·L^{- 1} within 2 h. The optimal conditions for this system are as follows: mass ratio of graphite to PTFE in cathode, 21, calcination temperature, 300 °C, current density,4.69mA/cm^2, pH 13.0, and the distance between anode and cathode, 8cm. The high concentration of hydrogen peroxide generated gives a promising application of this novel gas diffusion electrode system in pulp bleaching and waste-water treatment.

• Periodical: Applied Mechanics and Materials (Volumes 496-500)
• Pages: 159-162
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.496-500.159
• Online since: January 2014
• Authors: Yan Hou, Fan Gong Kong*, Shou Juan Wang, Gui Hua Yang
• Keywords: Gas Diffusion Electrode, Hydrogen Peroxide, Oxygen Reduction, PTFE

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