title: Monoatomic-thick graphitic carbon nitride dots on graphene sheets as an efficient catalyst in the oxygen reduction reaction.
abstract: Atomically thick two-dimensional materials have been increasingly attracting research interest not only due to their promising applications in a range of functional devices but also to their theoretical value to unraveling the catalytic electron transfer process within a simplified scenario. In this work, the monoatomic-thick dot-sized graphitic carbon nitride (g-C3N4) has been synthesized and intimately contacted to the basal plane of the graphene sheet to form the monolayer g-C3N4 dots@graphene (MTCG). The electrocatalytic activity of the MTCG in the oxygen reduction reaction is found to rival that of the commercial Pt/C catalyst in terms of the catalytic current density and half-wave potential. The density functional theory calculations confirm the catalytic improvement of the MTCG originates from a higher efficiency for the reduction of OOH(-) than that of the g-C3N4 alone; therefore, the current work is expected to provide new insights in developing next-generation, highly efficient catalysts for the oxygen reduction reaction.
authors.affiliation: Key Laboratory of Cluster Science, Ministry of Education of China Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry, Beijing Institute of Technology, Beijing 100081, P. R. China. zhipan@bit.edu.cn shlchen@bit.edu.cn lqu@bit.edu.cn.
authors.forename: Xiaopeng
authors.initials: X
authors.lastname: Wang
authors.forename: Lixia
authors.initials: L
authors.lastname: Wang
authors.forename: Fei
authors.initials: F
authors.lastname: Zhao
authors.forename: Chuangang
authors.initials: C
authors.lastname: Hu
authors.forename: Yang
authors.initials: Y
authors.lastname: Zhao
authors.forename: Zhipan
authors.initials: Z
authors.lastname: Zhang
authors.forename: Shilu
authors.initials: S
authors.lastname: Chen
authors.forename: Gaoquan
authors.initials: G
authors.lastname: Shi
authors.forename: Liangti
authors.initials: L
authors.lastname: Qu