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Precise CO₂ Reduction for Bilayer Graphene.

ABSTRACT: It is of great significance to explore unique and diverse chemical pathways to convert CO₂ into high-value-added products. Bilayer graphene (BLG), with a tunable twist angle and band structure, holds tremendous promise in both fundamental physics and next-generation high-performance devices. However, the π-conjugation and precise two-atom thickness are hindering the selective pathway, through an uncontrolled CO₂ reduction and perplexing growth mechanism. Here, we developed a chemical vapor deposition method to catalytically convert CO₂ into a high-quality BLG single crystal with a room temperature mobility of 2346 cm² V^-1 s^-1. In a finely controlled growth window, the CO₂ molecule works as both the carbon source and the oxygen etchant, helping to precisely define the BLG nucleus and set a record growth rate of 300 μm h^-1.

SUBMITTER: Gong P

PROVIDER: S-EPMC8949624 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature

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Precise CO2 Reduction for Bilayer Graphene.

Gong Peng P Tang Can C Wang Boran B Xiao Taishi T Zhu Hao H Li Qiaowei Q Sun Zhengzong Z

ACS central science 20220304 3

It is of great significance to explore unique and diverse chemical pathways to convert CO2 into high-value-added products. Bilayer graphene (BLG), with a tunable twist angle and band structure, holds tremendous promise in both fundamental physics and next-generation high-performance devices. However, the π-conjugation and precise two-atom thickness are hindering the selective pathway, through an uncontrolled CO2 reduction and perplexing growth mechanism. Here, we developed ...[more]

PMID: 35355814

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