Theoretical simulation of the reduction of graphene oxide by lithium naphthalenide

Literature Information

Publication Date 2015-04-23
DOI 10.1039/C5CP00357A
Impact Factor 3.676
Authors

Chu Chen, Weixing Kong, Haiming Duan, Jun Zhang


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Abstract

Based on density functional theory, we investigated the mechanism of graphene oxide reduction by lithium naphthalenide (C10H8Li). C10H8− easily reacts with GO to form a neutral C10H8 and the negatively charged GO, which can attach to Li+ ions to form lithium oxide on a graphene skeleton. The reduction mechanism is similar to the reduction of GO by metallic Li; the C10H8 is used to disperse Li in THF solution. Furthermore, the lithium oxide on GO can react with CO2 to form Li2CO3 and be further reduced by MeOH washing. In the negatively charged GO, the carboxyl at the edge of GO transfers an electron to GO and releases a CO2 molecule by overcoming a barrier of 0.19 eV. CO2 can also be adsorbed by lithium oxide to form Li2CO3 that is tightly attached on graphene skeleton. After GO is partially reduced, the adsorption of CO2 eliminates O in the form of Li2CO3 without any barrier. This mechanism can be helpful for further understanding the nature of GO reduction among various reducing agents and for exploring new and efficient GO reducing agents.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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