title: Microwave Enabled One-Pot, One-Step Fabrication and Nitrogen Doping of Holey Graphene Oxide for Catalytic Applications.
abstract: The unique properties of a holey graphene sheet, referred to as a graphene sheet with nanoholes in its basal plane, lead to wide range of applications that cannot be achieved by its nonporous counterpart. However, the large-scale solution-based production requires graphene oxide (GO) or reduced GO (rGO) as the starting materials, which take hours to days for fabrication. Here, an unexpected discovery that GO with or without holes can be controllably, directly, and rapidly (tens of seconds) fabricated from graphite powder via a one-step-one-pot microwave assisted reaction with a production yield of 120 wt% of graphite is reported. Furthermore, a fast and low temperature approach is developed for simultaneous nitrogen (N) doping and reduction of GO sheets. The N-doped holey rGO sheets demonstrate remarkable electrocatalytic capabilities for the electrochemical oxygen reduction reaction. The existence of the nanoholes provides a "short cut" for efficient mass transport and dramatically increases edges and surface area, therefore, creates more catalytic centers. The capability of rapid fabrication and N-doping as well as reduction of holey GO can lead to development of an efficient catalyst that can replace previous coin metals for energy generation and storage, such as fuel cells and metal-air batteries.
authors: Chemistry Department, Rutgers University, 73 Warren Street, Newark, NJ, 07102, USA.
authors: Mehulkumar
authors: M
authors: Patel
authors: Department of Chemical Engineering, University of Michigan, 2800 Plymouth Road, Ann Arbor, MI, 48109, USA.
authors: Wenchun
authors: W
authors: Feng
authors: Chemistry Department, Rutgers University, 73 Warren Street, Newark, NJ, 07102, USA.
authors: Keerthi
authors: K
authors: Savaram
authors: Chemistry Department, Rutgers University, 73 Warren Street, Newark, NJ, 07102, USA.
authors: M Reza
authors: MR
authors: Khoshi
authors: Chemistry Department, Rutgers University, 73 Warren Street, Newark, NJ, 07102, USA.
authors: Ruiming
authors: R
authors: Huang
authors: Chemistry Department, Rutgers University, 73 Warren Street, Newark, NJ, 07102, USA.
authors: Jing
authors: J
authors: Sun
authors: Chemistry Department, Rutgers University, 73 Warren Street, Newark, NJ, 07102, USA.
authors: Emann
authors: E
authors: Rabie
authors: Chemistry Department, Rutgers University, 73 Warren Street, Newark, NJ, 07102, USA.
authors: Carol
authors: C
authors: Flach
authors: Chemistry Department, Rutgers University, 73 Warren Street, Newark, NJ, 07102, USA.
authors: Richard
authors: R
authors: Mendelsohn
authors: Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Rd, Piscataway, NJ, 08854, USA.
authors: Eric
authors: E
authors: Garfunkel
authors: Chemistry Department, Rutgers University, 73 Warren Street, Newark, NJ, 07102, USA.
authors: Huixin
authors: H
authors: He
keywords: graphene oxide; heteroatom doping; holey graphene sheets; microwave irradiation; oxygen reduction reaction