Exploring the underlying oxygen reduction reaction electrocatalytic activities of pyridinic-N and pyrrolic-N doped graphene quantum dots

Chenhao Xia,Jianguang Feng,Chenchen Ma,Herui Xi,Na Song,Hongzhou Dong,Liyan Yu,Lifeng Dong

Molecular Catalysis（2023）

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摘要

•OH– and H3O+ ions/groups are introduced in N-doped graphene quantum dots (GQDs).•Ions/groups have different effects on pyridine (pN) and pyrrolic (prN)-doped GQDs.•Oxygen reduction reaction (ORR) catalytic activities of N-doped GQDs are studied.•OH and H3O can effectively improve ORR catalytic activities.•pN-GQDs demonstrate higher ORR catalytic activities than prN-GQDs.

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关键词

Graphene quantum dots,Pyridinic-N doping,Pyrrolic-N doping,Oxygen reduction reaction,Density functional theory

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