Penta nitrogen coordinated cobalt single atom catalysts with oxygenated carbon black for electrochemical H2O2 production

Non‐precious Metal Catalysts for Two‐Electron Oxygen Reduction Reaction

“…[152] Moreover, the wastewater treatment by the electro-Fenton process has been reported by utilizing electrocatalysts for the two-electron ORR, and it is believed that the development of better two-electron ORR catalysts will accompany more facile water treatment systems. [25] The two-electron ORR catalysts with such high-performance will not only improve the characteristics of in-situ H 2 O 2 production, but also contribute significantly to energy conversion and water treatment processes.…”

“…[5,24] However, in the last few years, the two-electron ORR has received a great deal of attention in light of the massive demand for environmentally-friendly synthesis of H 2 O 2 , and numerous studies have been devoted to the development of electrocatalysts for the two-electron ORR. [9,[25][26][27][28] The electrocatalysts for the two-electron ORR can be largely divided into two types, homogeneous catalysts and heterogeneous catalysts. Among homogeneous catalysts, a metal phthalocyanine and porphyrin structure has been proposed as a catalyst for the ORR.…”

“…[61] The highly coordinated CoÀ N 5 moieties to form CoÀ N 5 À OÀ C SACs were found to be active toward the two-electron ORR. [25] The coordination environment is described in the next few sections depending on the types of ligands.…”

Highly selective hydrogen peroxide electrosynthesis on copper phthalocyanine: interface engineering with an azo-polymer

“…In recent years, electrocatalytic oxygen reduction reaction (ORR) has provided an attractive alternative route for H 2 O 2 production due to its high efficiency, sustainability, and environmental friendliness. 13–16 Novel and highly efficient electrochemical oxygen reduction catalysts and reaction systems have attracted extensive attention with the rapid development of fuel cell technology. 17–25 In principle, the electrochemical reduction of O 2 molecules by a two-step two-electron (2e − ) reaction produces HO 2 − (H 2 O 2 ) or OH − (H 2 O) in alkaline medium, respectively.…”

Ni clusters immobilized on oxygen-rich siloxene nanosheets for efficient electrocatalytic oxygen reduction toward H2O2 synthesis

“…1,2 Hydrogenation of 2-alkyl-9/10-anthraquinones followed by oxidation with O 2 in organic solvents is the current primary method for large-scale production of H 2 O 2 . 3,4 However, this traditional approach not only results in significant energy consumption, but also generates a substantial amount of difficult-to-manage organic waste. 5–8 Furthermore, the complex purification and separation processes involved in the production, as well as the centralized transportation and storage of H 2 O 2 , continue to pose significant hazards and present formidable challenges.…”