A study on the physicochemical properties of hydroalcoholic solutions to improve the direct exfoliation of natural graphite down to few-layers graphene

被引:26
作者
Fedi, Filippo [1 ,2 ]
Miglietta, Maria Lucia [1 ]
Polichetti, Tiziana [1 ]
Ricciardella, Filiberto [1 ,3 ]
Massera, Ettore [1 ]
Ninno, Domenico [3 ]
Di Francia, Girolamo [1 ]
机构
[1] ENEA UTTP MDB Lab Mat & Devices Basic Res, 1 Piazzale Enrico Fermi, I-80055 Naples, Italy
[2] Univ Vienna, Elect Properties Mat, Fac Phys, A-1090 Vienna, Austria
[3] Univ Naples Federico II, Dept Phys, I-80126 Naples, Italy
关键词
graphene; low-boiling solvents; liquid phase exfoliation; LIQUID-PHASE EXFOLIATION; SURFACE-TENSION; WATER;
D O I
10.1088/2053-1591/2/3/035601
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Straightforward methods to produce pristine graphene flakes in large quantities are based on the liquid-phase exfoliation processes. These one-step physical transformations of graphite into graphene offer many unique advantages. To date, a large number of liquids have been employed as exfoliation media exploiting their thermodynamic and chemical features as compared to those of graphene. Here, we pursued the goal of realizing water based mixtures to exfoliate graphite and disperse graphene without the aid of surfactants. To this aim, aqueous mixtures with suitable values of surface tension and Hansen solubility parameters (HSPs), were specifically designed and used. The very high water surface tension was decreased by the addition of solvents with lower surface tensions such as alcohols, obtaining, in this way, more favourable HSP distances. The specific role of each of these thermodynamic features was finally investigated. The results showed that the designed hydroalcoholic solutions were effective in both the graphite exfoliation and dispersion without the addition of any surfactants or other stabilizing agents. Stable graphene suspensions were obtained at concentration comparable to those produced with low-boiling solvents and water/surfactants.
引用
收藏
页数:8
相关论文
共 28 条
[1]   Graphene: Safe or Toxic? The Two Faces of the Medal [J].
Bianco, Alberto .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2013, 52 (19) :4986-4997
[2]   Ultrasound-Assisted SWNTs Dispersion: Effects of Sonication Parameters and Solvent Properties [J].
Cheng, Qiaohuan ;
Debnath, Sourabhi ;
Gregan, Elizabeth ;
Byrne, Hugh J. .
JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (19) :8821-8827
[3]   Graphene via sonication assisted liquid-phase exfoliation [J].
Ciesielski, Artur ;
Samori, Paolo .
CHEMICAL SOCIETY REVIEWS, 2014, 43 (01) :381-398
[4]   Liquid Exfoliation of Defect-Free Graphene [J].
Coleman, Jonathan N. .
ACCOUNTS OF CHEMICAL RESEARCH, 2013, 46 (01) :14-22
[5]   Interpretation of Raman spectra of disordered and amorphous carbon [J].
Ferrari, AC ;
Robertson, J .
PHYSICAL REVIEW B, 2000, 61 (20) :14095-14107
[6]   The rise of graphene [J].
Geim, A. K. ;
Novoselov, K. S. .
NATURE MATERIALS, 2007, 6 (03) :183-191
[7]   Graphene: Status and Prospects [J].
Geim, A. K. .
SCIENCE, 2009, 324 (5934) :1530-1534
[8]   SURFACE-TENSION BY PENDANT DROP .1. A FAST STANDARD INSTRUMENT USING COMPUTER IMAGE-ANALYSIS [J].
HANSEN, FK ;
RODSRUD, G .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1991, 141 (01) :1-9
[9]   High-yield production of graphene by liquid-phase exfoliation of graphite [J].
Hernandez, Yenny ;
Nicolosi, Valeria ;
Lotya, Mustafa ;
Blighe, Fiona M. ;
Sun, Zhenyu ;
De, Sukanta ;
McGovern, I. T. ;
Holland, Brendan ;
Byrne, Michele ;
Gun'ko, Yurii K. ;
Boland, John J. ;
Niraj, Peter ;
Duesberg, Georg ;
Krishnamurthy, Satheesh ;
Goodhue, Robbie ;
Hutchison, John ;
Scardaci, Vittorio ;
Ferrari, Andrea C. ;
Coleman, Jonathan N. .
NATURE NANOTECHNOLOGY, 2008, 3 (09) :563-568
[10]   Measurement of Multicomponent Solubility Parameters for Graphene Facilitates Solvent Discovery [J].
Hernandez, Yenny ;
Lotya, Mustafa ;
Rickard, David ;
Bergin, Shane D. ;
Coleman, Jonathan N. .
LANGMUIR, 2010, 26 (05) :3208-3213