Efficient H2O2 electrogeneration at graphite felt modified via electrode polarity reversal: Utilization for organic pollutants degradation

Abstract

Electrochemical synthesis of H 2 O 2 offers a great potential for water treatment. However, a significant challenge is the development of efficient cathode materials for the process. Herein, we implement a practical electrochemical cathode modification to support efficient H 2 O 2 electrogeneration via the reduction of dissolved anodic O 2. Graphite felt (GF) is in situ anodically *

Study of polarized activated carbon filters as simultaneous adsorbent and 3D-type electrode materials for electro-Fenton reactors

“…4 b shows that while the interaction of A with the AC source, B seems to be irrelevant for the CR% result, the interaction of A with the particle size distribution defined by C, seems to have a moderate effect. This observation supports the inter-particle contact and derived electric conductivity effect that has been previously suggested for C and that should depend up to a certain point on A, since the pre-treatment oxidation process influences the hydrophilicity as well as the chemical composition of the surface of the AC material [ 27 , [55] , [56] , [57] , [58] ].…”

Recent Progress on Carbonaceous Material Engineering for Electrochemical Hydrogen Peroxide Generation

“…Furthermore, the oxygen functional groups on carbon materials were increased by the treatments of acid, alkali, electrochemical oxidation, and glow discharge plasma. All of these materials showed excellent properties of two-electron ORR [33][34][35][36][37][38]. These reports have proven that oxygen functional groups on carbon materials are effective for selective O 2 reduction to produce H 2 O 2 .…”

Research progress of carbon-based materials for electro-Fenton degradation of pollutants

“…H2O2 [52] 。Garcia-Rodriguez 等 [53] [52] 。氧基官能团(-COOH、-C=O、-OH、C-O-C 等) 作为 O2 电化学还原活性位点已被频繁报道 [56] 。有研 究发现，具有亲水性的氧基官能团(-COOH、-COH、 -COO-、R-OH、>C=O)，易于接触电极表面产生溶 解 O2 [57] 。同时，氧基官能团浓度和 H2O2 产量之间存 在明显线性相关性 [58,59] 。Lu 等 [60]…”