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Spontaneous Liquid Water Dissociation on Hybridised Boron Nitride and Graphene atomic layers from Ab Initio Molecular Dynamics Simulations

Abstract

Two-dimensional materials such as graphene (G) and hexagonal boron nitride (BN) have demonstrated potential applications in membrane science and in particular for the harvest of blue energy. Although pure G and BN atomic layers are known to remain inert towards neutral water, one may wonder about the aqueous reactivity of hybridized monolayers formed by joining BN and GR sheets in a planar fashion. Here, we perform Ab Initio molecular dynamics of liquid water in contact with all possible planar heterostructures. Remarkably, we could observe the spontaneous chemisorption and dissociation of interfacial water molecule into its self-ions, at one specific and non-standard one-dimensional border. Our simulations predict that this type of heterostructure is prone to ionize liquid water already in the absence of any electrical gating.

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Article information


Submitted
16 Dec 2019
Accepted
13 Feb 2020
First published
13 Feb 2020

Phys. Chem. Chem. Phys., 2020, Accepted Manuscript
Article type
Paper

Spontaneous Liquid Water Dissociation on Hybridised Boron Nitride and Graphene atomic layers from Ab Initio Molecular Dynamics Simulations

B. Grosjean, A. Robert, R. Vuilleumier and M. L. Bocquet, Phys. Chem. Chem. Phys., 2020, Accepted Manuscript , DOI: 10.1039/C9CP06765E

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