Selective nitrogen doping of graphene oxide by laser irradiation for enhanced hydrogen evolution activity

Wenjing Zheng; Yan Zhang; Kaiyang Niu; Tao Liu; Karen Bustillo; Peter Ercius; Dennis Nordlund; Junqiao Wu; Haimei Zheng; Xiwen Du

doi:10.1039/C8CC07725H

Selective nitrogen doping of graphene oxide by laser irradiation for enhanced hydrogen evolution activity†

Wenjing Zheng,

^ab Yan Zhang,^ac Kaiyang Niu,^b Tao Liu,^a Karen Bustillo,

^d Peter Ercius,^d Dennis Nordlund,^c Junqiao Wu,^be Haimei Zheng

*^be and Xiwen Du

*^a

Author affiliations

* Corresponding authors

^a Institute of New-Energy Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
E-mail: xwdu@tju.edu.cn

^b Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
E-mail: hmzheng@lbl.gov

^c Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA

^d National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, USA

^e Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA

Abstract

Selective nitrogen-doping of graphene oxide with a high pyridinic N ratio (51%; L-GO) was achieved by laser irradiation of graphene oxide with ammonia. The resulting L-GO exhibited enhanced electrocatalytic properties; specifically, the overpotential of the hydrogen evolution reaction (HER) was improved by over 400 mV at 10 mA cm⁻² compared to the pristine graphene oxide.

Chemical Communications

Selective nitrogen doping of graphene oxide by laser irradiation for enhanced hydrogen evolution activity†

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