Controllable Edge Oxidation and Bubbling Exfoliation Enable the Fabrication of High Quality Water Dispersible Graphene.
Despite significant progresses made on mass production of chemically exfoliated graphene, the quality, cost and environmental friendliness remain major challenges for its market penetration. Here, we present a fast and green exfoliation strategy for large scale production of high quality water dispersible few layer graphene through a controllable edge oxidation and localized gas bubbling process. Mild edge oxidation guarantees that the pristine sp2lattice is largely intact and the edges are functionalized with hydrophilic groups, giving rise to high conductivity and good water dispersibility at the same time. The aqueous concentration can be as high as 5.0 mg mL-1, which is an order of magnitude higher than previously reports. The water soluble graphene can be directly spray-coated on various substrates, and the back-gated field effect transistor give hole and electron mobility of ~496 and ~676 cm2V-1s-1, respectively. These results achieved are expected to expedite various applications of graphene.
School of Physical Science and Technology, ShanghaiTech University, Shanghai 200031, P.R. China.|State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 20050, P. R. China.
Suyun
S
Tian
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 20050, P. R. China.
Jing
J
Sun
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 20050, P. R. China.
Siwei
S
Yang
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 20050, P. R. China.
Peng
P
He
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 20050, P. R. China.
Gang
G
Wang
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 20050, P. R. China.
Zengfeng
Z
Di
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 20050, P. R. China.|CAS Center for Excellence in Superconducting Electronics (CENSE), Shanghai 200050, China.
Guqiao
G
Ding
School of Physical Science and Technology, ShanghaiTech University, Shanghai 200031, P.R. China.|State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 20050, P. R. China.
Xiaoming
X
Xie
School of Physical Science and Technology, ShanghaiTech University, Shanghai 200031, P.R. China.|State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 20050, P. R. China.
Mianheng
M
Jiang
Acc Chem Res. 2013 Oct 15;46(10):2275-85
23270430
Nano Lett. 2014 Oct 8;14(10):5834-8
25203787
Nano Lett. 2007 Nov;7(11):3499-503
17944526
Sci Rep. 2013;3:2636
24022463
ACS Nano. 2011 Jun 28;5(6):5031-7
21528892
Nat Nanotechnol. 2014 Oct;9(10):726-30
25286256
ACS Appl Mater Interfaces. 2015 Apr 1;7(12):6966-73
25762191
Nat Mater. 2014 Jun;13(6):624-30
24747780
Adv Mater. 2010 Oct 25;22(40):4467-72
20717985
Nat Nanotechnol. 2008 May;3(5):270-4
18654522
Nat Nanotechnol. 2008 Feb;3(2):101-5
18654470
Nano Lett. 2012 Jun 13;12(6):2871-6
22616737
Nat Commun. 2010 Sep 21;1:73
20865806
J Am Chem Soc. 2014 Apr 23;136(16):6083-91
24684678
Chem Commun (Camb). 2015 Mar 18;51(22):4651-4
25690460
Nano Lett. 2010 Mar 10;10(3):1098-102
20136098
Nat Nanotechnol. 2008 Sep;3(9):563-8
18772919
Sci Rep. 2013;3:1134
23355949
ACS Nano. 2008 Mar;2(3):463-70
19206571
Biosens Bioelectron. 2012 Aug-Sep;37(1):82-7
22609556
J Am Chem Soc. 2011 Jun 15;133(23):8888-91
21557613
ACS Nano. 2014 Jan 28;8(1):650-6
24350996
J Am Chem Soc. 2015 Nov 4;137(43):13927-32
26460583
Sci Rep. 2013;3:2465
23955352
ACS Nano. 2009 Nov 24;3(11):3587-94
19788171
Chem Soc Rev. 2010 Jan;39(1):228-40
20023850
Nat Commun. 2015 Jan 21;6:5716
25607686
ACS Nano. 2012 Mar 27;6(3):2471-6
22339048
Sci Rep. 2014 Apr 01;4:4537
24686949
Nano Lett. 2010 Dec 8;10(12):4975-80
20968305
Acc Chem Res. 2013 Jan 15;46(1):14-22
22433117