Electrogeneration of hydrogen peroxide on a novel highly effective acetylene black-PTFE cathode with PTFE film

Preparation and characterization of a novel KOH activated graphite felt cathode for the electro-Fenton process

“…Nowadays, many carbonaceous materials have been investigated as the EF cathode, such as graphite [16], carbon felt [17][18][19], graphite felt [20][21][22], carbon sponge [23], activated carbon fiber [24][25][26], carbon-PTFE air-diffusion electrode [27][28][29][30][31][32][33]. Among them, graphite felt (GF) is a promising commercialization cathode material, due to their advantages of large three dimensional active surfaces, chemical resistance, mechanical integrity and easiness to be manufactured.…”

Electrogeneration of hydrogen peroxide for electro-Fenton via oxygen reduction using polyacrylonitrile-based carbon fiber brush cathode

“…H 2 O 2 is one of the most essential and versatile chemicals for pulp bleaching, waste treatment and numerous compounds manufacture [1][2][3], and it is promising for green chemistry and environmental control, especially for effluents treatment because it decomposes solely into water and oxygen, leaving no hazardous residues [4][5][6]. It can be employed either alone or in combination with UV or metal salts to significantly enhance the oxidizing efficiency.…”

“…The current large-scale manufacture of H 2 O 2 , multi-step anthraquinone oxidation (AO) method, has disadvantages of high energy consumption and waste discharge [1,3,4,11], therefore extensive efforts have been devoted to directly synthesizing H 2 O 2 in situ to reduce the cost and potential risks in purchasing, transporting, storaging and handling of concentrated H 2 O 2 [5,6,12]. Two strategies have aroused wide attention.…”

“…Several electrodes such as mercury [18], graphite [16,19], carbon felt [20,21], activated carbon fiber (ACF) [22][23][24][25], reticulated vitreous carbon (RVC) [26], carbon sponge [27] and carbon nanotube [28] were tried, and particularly, gas diffusion electrode (GDE) is an effective one [2,29,30] but was limited by the high price and complex configuration for injection of O 2 [5,12,29]. Besides, the two-electron ORR on carbon cathodes in strong alkaline solution is a well-known efficient reaction， but an effective cathode to electrogenerate H 2 O 2 for Fenton reaction in acidic medium is urgently needed [7].…”

Electrical activation of hydrogen peroxide for organic contaminant degradation using an improved gas diffusion cathode

“…In the electrolytic process, the catalytic layer faces to electrolyte while the gas diffusion layer faces to reactant gas that diffuses through micro-pores of the GDE to the catalytic layer and reacts with electrolyte at the interface between the electrolyte and the reactant gas. [7] Currently, GDE using as cathode for in-situ electrosynthesis of H 2 O 2 have been mainly focused on various carbon-based materials and its modification. However, the effects of the cathodes construction were usually neglected.…”