Study of water adsorption on graphene edges

Lijuan Jiang; Jinlong Wang; Peng Liu; Wei Song; Bingling He

doi:10.1039/C8RA00002F

Study of water adsorption on graphene edges

Lijuan Jiang,

^ab Jinlong Wang,^a Peng Liu,*^b Wei Song^a and Bingling He^a

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* Corresponding authors

^a Department of Physics and Electronic Engineering, Xinxiang University, Xinxiang 453003, China

^b State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
E-mail: pengliu@mail.tsinghua.edu.cn

Abstract

Water adsorption on graphene edges was studied by field emission (FE) experiments and first principles simulation. By analyzing the FE current change with temperature, it was concluded that the intrinsic FE of a graphene edge is consistent with Fowler–Nordheim (FN) theory. The noise of IV and non-linearity of FN curves at room-temperature can be interpreted by the adsorption effects. Water is speculated as the most responsible gas specie. We have calculated the work function of graphene by VASP. The results show that water adsorption will lower the work function of the graphene edge, while increasing the work function of the graphene surface.

Article information

https://doi.org/10.1039/C8RA00002F

Article type

Paper

Submitted

01 Jan 2018

Accepted

15 Mar 2018

First published

21 Mar 2018

This article is Open Access

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RSC Adv., 2018,8, 11216-11221

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Study of water adsorption on graphene edges

L. Jiang, J. Wang, P. Liu, W. Song and B. He, RSC Adv., 2018, 8, 11216 DOI: 10.1039/C8RA00002F

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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Study of water adsorption on graphene edges

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Study of water adsorption on graphene edges

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