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N-Doped graphene/C covalent hybrid as a new material for energy harvesting applications. | LitMetric

N-Doped graphene/C covalent hybrid as a new material for energy harvesting applications.

Chem Sci

Universidad de Castilla-La Mancha , Instituto de Nanociencia , Nanotecnología y Materiales Moleculares (INAMOL) , 45071-Toledo , Spain . Email:

Published: November 2018

AI Article Synopsis

Article Abstract

N-Doped graphene (N-G) was chemically functionalized by -alkylation with the well-known electron acceptor C. The degree of functionalization and the key structural features of the N-G/C hybrid were systematically investigated by a number of techniques including thermogravimetric analysis, X-ray photoelectron and Raman spectroscopies and transmission electron and atomic force microscopies. Absorption and electrochemical studies revealed interactions between the N-G and C while the fluorescence of C within the hybrid was found to be fully quenched. Evidence for the occurrence of excited state charge transfer from the singlet excited C to N-G in the hybrid was obtained from femtosecond transient absorption studies covering the visible-near-IR regions. Electron-pooling experiments performed in the presence of a sacrificial electron donor and a second electron acceptor, methyl viologen, revealed the accumulation of the one-electron reduced product of methyl viologen upon continuous irradiation of the N-G/C nanohybrid, thus revealing the utility of this material in photocatalytic energy harvesting applications.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240813PMC
http://dx.doi.org/10.1039/c8sc02013bDOI Listing

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