Ultrahigh yield of hydrogen peroxide on graphite felt cathode modified with electrochemically exfoliated graphene

Abstract

The development of an efficient oxygen reduction reaction (ORR) cathode for hydrogen peroxide production represents an important challenge in the field of electrochemical processes and is highly demanded for chemical industries and environmental remediation applications.

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

“…Generally, the methods are divided into two types. The first is depositing other catalysts on the surface of carbonaceous materials, such as graphene [21], carbon nanotubes [22] [23], acetylene black [24], carbon black [9], and metal oxides (i.e., MnO 2 [25], CeO 2 [26]). The second is heteroatom-doping, such as O [27] [28], N [29] [30], and F [31].…”

Highly efficient electrosynthesis of hydrogen peroxide on a superhydrophobic three-phase interface by natural air diffusion

“…Catalyst selectivity, oxygen mass transfer, and electron transfer at the cathodic reaction interface are three important factors for achieving efficient H 2 O 2 production 10 . Carbonaceous materials, including carbon black (CB), nanotubes, and graphene, have been proved to be good ORR catalysts for H 2 O 2 synthesis 11,12 . As the applied potential increases, the electron transfer is enhanced.…”

Two-electron oxygen reduction on fullerene C60-carbon nanotubes covalent hybrid as a metal-free electrocatalyst

“…As shown in Fig. 8d, higher current intensities were obtained by increasing the rotation rate for the reduction of oxygen due to the decrease in the diffusion layer 23 . The K-L plot (Fig.…”

“…The ring electrode was set at a constant potential of 0.5 V vs. SCE to detect the generated H 2 O 2 . The electron transfer numbers ( n ) and H 2 O 2 selectivity were calculated using the following relations 23 :where I r and I d denote the ring current and disk current, respectively. The N was the collection efficiency of Pt ring, which was determined to be 0.3 with [Fe(CN) 6 ] 4−/3− redox probe 24 .…”