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- Title
CO<sub>2</sub> Laser‐Induced Graphene with an Appropriate Oxygen Species as an Efficient Electrocatalyst for Hydrogen Peroxide Synthesis.
- Authors
Fan, Mengmeng; Xu, Jing; Wang, Yan; Yuan, Qixin; Zhao, Yuying; Wang, Zeming; Jiang, Jianchun
- Abstract
Oxygen species functionalized graphene (O−G) is an effective electrocatalyst for electrochemically synthesizing hydrogen peroxide (H2O2) by a 2 e− oxygen reduction reaction (ORR). The type of oxygen species and degree of carbon crystallinity in O−G are two key factors for the high catalytic performance of the 2 e− ORR. However, the general preparing method of O−G by the precursor of graphite has the disadvantages of consuming massive strong oxidant and washing water. Herein, the biomass‐based graphene with tunable oxygen species is rapidly fabricated by a CO2 laser. In a flow cell setup, the laser‐induced graphene (LIG) with abundant active oxygen species and graphene structure shows high catalytic performance including high Faraday efficiency (over 78 %) and high mass activity (814 mmolgcatalyst−1 h−1), superior to most of the reported carbon‐based electrocatalysts. Density function theory demonstrates the meta‐C atoms at nearby C−O, O−C=O species are the key catalytic sites. Therefore, we develop one facile method to rapidly convert biomass to graphene electrocatalyst used for H2O2 synthesis.
- Subjects
HYDROGEN production; GRAPHENE; CARBON dioxide lasers; HYDROGEN peroxide; OXYGEN; SPECIES; GRAPHENE oxide; OXYGEN reduction
- Publication
Chemistry - A European Journal, 2022, Vol 28, Issue 60, p1
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.202201996