Effect of Nitrogen Species in Graphite Carbon Nitride on Hydrogen Peroxide Production. Issue 27 (29th August 2022)

• Record Type: Journal Article
• Authors: Yang, Zhaojing; Zhang, Chengxu; Mei, Yunjie; Zhang, Yue; Feng, Yuebin; Shao, Minhua; Hu, Jue
• Is Part Of: Advanced materials interfaces. Volume 9:Issue 27(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-08-29
• Subjects: g‐C 3N 4 -- hydrogen peroxide production -- metal free catalysts -- nitrogen species -- oxygen reduction reaction; Materials science -- Periodicals; 620.11
• DOI: 10.1002/admi.202201325
• Languages: English
• ISSNs: 2196-7350

Abstract

Abstract: Electrochemical oxygen reduction for producing clean hydrogen peroxide (H2 O2 ) is a promising alternative approach to the industrial anthraquinone method. At present, the most pressing challenge is the development of oxygen reduction electrocatalysts with sufficient activity, stability, and 2e − pathway selectivity. Here, the electrocatalytic properties of a series of graphitic carbon nitride (g‐C3 N4 ) catalysts with different concentrations of nitrogen species (CNC and N(C)3 ) are explored for H2 O2 production. Electrochemical studies show that the selectivity of g‐C3 N4 for hydrogen peroxide generation in alkaline electrolytes reaches ≈90%. To explain the observed results, the structure, composition, and physical and chemical properties of g‐C3 N4 catalysts synthesized from different precursors are compared with their electrocatalytic performance. This research contributes to the discovery and design of a high‐performance nitrogen‐doped carbon catalysts for the production of hydrogen peroxide. Abstract : Graphite nitrogen species in graphite carbon nitride graphite with low adsorption energy is conducive to the adsorption of O2 in the initial step of oxygen reduction, and as a result, beneficial to the hydrogen peroxide generation through 2e − oxygen reduction reaction pathway.