Graphene production via electrochemical reduction of graphene oxide: Synthesis and characterisation

Chemical Engineering Journal

Volumn 251, Issue , 2014, Pages 422-434

  Toh, Shaw Yong ^a   Loh, Kee Shyuan ^a   Kamarudin, Siti Kartom ^a   Daud, Wan Ramli Wan ^a  

^a UNIVERSITI KEBANGSAAN MALAYSIA   (Malaysia)

Author keywords

Electrochemical reduction; Electrochemically reduced graphene oxide (ERGO); Graphene; Graphene oxide (GO)

Indexed keywords

ELECTROCHEMICAL ELECTRODES; ELECTROLYTIC REDUCTION; INFRARED SPECTROSCOPY; PHOTOELECTRONS; X RAY DIFFRACTION; X RAY PHOTOELECTRON SPECTROSCOPY;

CHARACTERISTIC PROPERTIES; ELECTROCHEMICAL METHODS; ELECTROCHEMICAL REDUCTIONS; ELECTROCHEMICAL TECHNIQUES; ELECTROCHEMICALLY REDUCED GRAPHENE; ENVIRONMENTALLY BENIGN; GRAPHENE OXIDES; SPECTROSCOPIC TECHNIQUE;

GRAPHENE;

EID: 84900800601     PISSN: 13858947     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.cej.2014.04.004     Document Type: Review

References (119)

1. Stoller M.D., Park S., Zhu Y., An J., Ruoff R.S. Graphene-based ultracapacitor. Nano Lett. 2008, 8:3498.
2. Lee C., Wei X., Kysar J.W., Hone J. Measurement of the elastic properties and intrinsic strength of monolayer grapheme. Science 2008, 321:385.
3. Geim A.K., Novoselov K.S. The rise of graphene. Nat. Mater. 2007, 6:183.
4. Balandin A.A., Ghosh S., Bao W., Calizo I., Teweldebrhan D., Miao F., Lau C.N. Superior thermal conductivity of single-layer graphene. Nano Lett. 2008, 8:902.
5. Du X., Skachko I., Barker A., Andrei E.Y. Approaching ballistic transport in suspended graphene. Nat. Nanotechnol. 2008, 3:491.
6. Bolotin K.I., Sikes K.J., Jiang Z., Klima M., Fudenberg G., Hone J., Kim P., Stormer H.L. Ultrahigh electron mobility in suspended graphene. Solid State Commun. 2008, 146:351.
7. Nair R.R., Blake P., Geim A.N. Fine structure constant defines visual transparency of graphene. Science 2008, 320:1308.
8. Hsieh C., Liu Y., Roy A.K. Pulse electrodeposited Pd nanoclusters on graphene-based electrodes for proton exchange membrane fuel cells. Electrochim. Acta 2012, 64:205.
9. Chang H., Chang C., Tsai Y., Liao C. Electrochemically synthesized graphene/polypyrrole composites and their use in supercapacitor. Carbon 2012, 50:2331.
10. Raj M.A., John S.A. Simultaneous determination of uric acid, xanthine, hypoxanthine and caffeine in human blood serum and urine samples using electrochemically reduced graphene oxide modified electrode. Anal. Chim. Acta 2013, 771:14.
11. Wang D., Yan W., Vijapur S.H., Botte G.G. Electrochemically reduced graphene oxide-nickel nanocomposites for urea electrolysis. Electrochim. Acta 2013, 89:732.
12. Schwierz F. Graphene transistors. Nat. Nanotechnol. 2010, 5:487.
13. Novoselov K.S., Geim A.K., Morozov S.V., Jiang D., Zhang Y., Dubonos S.V., Grigorieva I.V., Firsov A.A. Electric field effect in atomically thin carbon films. Science 2004, 306:666.
14. Novoselov K.S., Jiang D., Schedin F., Booth T.J., Khotkevich V.V., Morozov S.V., Geim A.K. Two-dimensional atomic crystals. Proc. Natl. Acad. Sci. USA 2005, 102:10451.
15. Forbeaux I., Themlin J.-M., Debever J.-M. Heteroepitaxial graphite on 6H-SiC(0001): interface formation through conduction-band electronic structure. Phys. Rev. B 1998, 58:16396.
16. Cambaz Z.G., Yushin G., Osswald S., Mochalin V., Gogotsi Y. Noncatalytic synthesis of carbon nanotubes, graphene and graphite on SiC. Carbon 2008, 46:841.
17. Kim K.S., Zhao Y., Jang H., Lee S.Y., Kim J.M., Kim K.S., Ahn J.H., Kim P., Choi J.Y., Hong B.H. Large-scale pattern growth of graphene films for stretchable transparent electrodes. Nature 2009, 457:706.
18. Li X., Cai W., An J., Kim S., Nah J., Yang D., Piner R., Velamakanni A., Jung I., Tutuc E., Banerjee S.K., Colombo L., Ruoff R.S. Large-area synthesis of high-quality and uniform graphene films on copper foils. Science 2009, 324:1312.
19. Compton O.C., Jain B., Dikin D.A., Abouimrane A., Amine K., Nguyen S.T. Chemically active reduced graphene oxide with tunable C/O ratios. ACS Nano 2011, 5:4380.
20. Paredes J.I., Villar-Rodil S., Alonso A.M., Tascon J.M.D. Graphene oxide dispersions in organic solvents. Langmuir 2008, 24:10560.
21. Xu Y., Sheng K., Li C., Shi G. Highly conductive chemically converted graphene prepared from mildly oxidized graphene oxide. J. Mater. Chem. 2011, 21:7376.
22. Wang G.X., Yang J., Park J., Guo X.L., Wang B., Liu H., Yao J. Facile synthesis and characterization of graphene nanosheets. J. Phys. Chem. C 2008, 112:8192.
23. Stankovich S., Piner R.D., Chen X.Q., Wu N.Q., Nguyen S.T., Ruoff R.S. Stable aqueous dispersions of graphitic nanoplatelets via the reduction of exfoliated graphite oxide in the presence of poly(sodium 4-styrenesulfonate). J. Mater. Chem. 2006, 16:155.
24. Liu X., Kim H., Guo L.J. Optimization of thermally reduced graphene oxide for an efficient hole transport layer in polymer solar cells. Org. Electron. 2013, 14:591.
25. Gao X., Jang J., Nagase S. Hydrazine and thermal reduction of graphene oxide: reaction mechanisms, product structures, and reaction design. J. Phys. Chem. C 2010, 114:832.
26. 2-graphene nanocomposites. UV-assisted photocatalytic reduction of graphene oxide. ACS Nano 2008, 2:1487.
27. Akhavan O. Photocatalytic reduction of graphene oxides hybridized by ZnO nanoparticles in ethanol. Carbon 2011, 49:11.
28. Guo H.L., Wang X.F., Qian Q.Y., Wang F.B., Xia X.H. A green approach to the synthesis of graphene nanosheets. ACS Nano 2009, 3:2653.
29. Paredes J.I., Villar-Rodil S., Fernandez-Merino M.J., Guardia L., Martinez-Alonso A., Tascon J.M.D. Environmentally friendly approaches toward the mass production of processable graphene from graphite oxide. J. Mater. Chem. 2010, 21:298.
30. Pariasamy M., Thirumalaikumar M. Methods of enhancement of reactivity and selectivity of sodium borohydride for applications in organic synthesis. J. Organomet. Chem. 2000, 609:137.
31. Wang Z., Zhou X., Zhang J., Boey F., Zhang H. Direct electrochemical reduction of single-layer graphene oxide and subsequent functionalization with glucose oxidase. J. Phys. Chem. C 2009, 113:14071.
32. Zhou M., Wang Y., Zhai Y., Zhai J., Ren W., Wang F., Dong S. Controlled synthesis of large-area and patterned electrochemically reduced graphene oxide films. Chem. Eur. J. 2009, 15:6116.
33. Viinikanoja A., Wang Z., Kauppila J., Kvarnstrom C. Electrochemical reduction of graphene oxide and its in situ spectroelectrochemical characterization. Phys. Chem. Chem. Phys. 2012, 14:14003.
34. Alanyalioglu M., Seruga J.J., Oro-Sole J., Casan-Pastor N. The synthesis of graphene sheets with controlled thickness and order using surfactant-assisted electrochemical processes. Carbon 2012, 50:142.
35. Park S., Ruoff R.S. Chemical methods for the production of graphenes. Nat. Nanotechnol. 2009, 4:217.
36. Dreyer D.R., Park S., Bielawski C.W., Ruoff R.S. The chemistry of graphene oxide. Chem. Soc. Rev. 2010, 39:228.
37. Compton O.C., Nguyen S.T. Graphene oxide, highly reduced graphene oxide, and graphene: versatile building blocks for carbon-based materials. Small 2010, 6:711.
38. Eda G., Chhowalla M. Chemically derived graphene oxide: towards large-area thin-film electronics and optoelectronics. Adv. Mater. 2010, 22:2392.
39. Lerf A., He H., Forster M., Klinowski J. Structure of graphite oxide revisited. J. Phys. Chem. B 1998, 102:4477.
40. He H., Klinowski J., Forster M., Lerf A. A new structural model for graphite oxide. Chem. Phys. Lett. 1998, 287:53.
41. Hummers W.S., Offeman R.E. Preparation of graphitic oxide. J. Am. Chem. Soc. 1958, 80:1339.
42. Kovtyukhova N.I., Ollivier P.J., Martin B.R., Mallouk T.E., Chizhik S.A., Buzaneva E.V., Gorchinskiy A.D. Layer-by-layer assembly of ultrathin composite films from micron-sized graphite oxide sheets and polycations. Chem. Mater. 1999, 11:771.
43. Marcano D.C., Kosynkin D.V., Berlin J.M., Sinitskii A., Sun Z., Slesarev A., Alemany L.B., Lu W., Tour J.M. Improved synthesis of graphene oxide. ACS Nano 2010, 4:4806.
44. Shao G., Lu Y., Wu F., Yang C., Zeng F., Wu Q. Graphene oxide: the mechanism of oxidation and exfoliation. J. Mater. Sci. 2012, 47:4400.
45. Eda G., Ball J., Mattevi C., Acik M., Artiglia L., Granozzi G., Chabal Y., Anthopoulos T.D., Chhowalla M. Partially oxidized graphene as a precursor to graphene. J. Mater. Chem. 2011, 21:11217.
46. Bourlinos A.B., Gournis D., Petridis D., Szabo T., Szeri A., Dekany I. Graphite oxide: chemical reduction to graphite and surface modification with primary aliphatic amines and amino acids. Langmuir 2003, 19:6050.
47. Buchsteiner A., Lerf A., Pieper J. Water dynamics in graphite oxide investigated with neutron scattering. J. Phys. Chem. B 2006, 110:22328.
48. Stankovich S., Dikin D.A., Piner R.D., Kohlhass K.A., Kleinhammes A., Jia Y., Wu Y., Nguyen S.T., Ruoff R.S. Synthesis of graphene-based nanosheets via chemical reduction of exfoliated graphite oxide. Carbon 2007, 45:1558.
49. Kang D., Shin H.S. Control of size and physical properties of graphene oxide by changing the oxidation temperature. Carbon Lett. 2012, 13:39.
50. Zhang T., Zhang D. Aqueous colloidals of graphene oxide nanosheets by exfoliation of graphite oxide without ultrasonication. Bull. Mater. Sci. 2011, 34:25.
51. Eda G., Chhowalla M. Graphene-based composite thin films for electronics. Nano Lett. 2009, 9:814.
52. Si Y., Samulski E.T. Synthesis of water soluble graphene. Nano Lett. 2008, 8:1679.
53. Wang S., Tambraparni M., Qiu J., Tipton J., Dean D. Thermal expansion of graphene composites. Macromolecules 2009, 42:5251.
54. Li D., Muller M.B., Gilje S., Kaner R.B., Wallace G.G. Processable aqueous dispersions of graphene nanosheets. Nat. Nanotechnol. 2008, 3:101.
55. Bai H., Li C., Shi G. Functional composite materials based on chemically converted graphene. Adv. Mater. 2011, 23:1089.
56. Jung I., Vaupel M., Pelton M., Piner R., Dikin D.A., Stankovich S., An J., Ruoff R.S. Characterization of thermally reduced graphene oxide by imaging ellipsometry. J. Phys. Chem. C 2008, 112:8499.
57. Paredes J.I., Villar-Rodil S., Martinez-Alonso A., Tascon J.M.D. Graphene oxide dispersions in organic solvents. Langmuir 2008, 24:10560.
58. Zhao J., Pei S., Ren W., Gao L., Cheng H. Efficient preparation of large-area graphene oxide sheets for transparent conductive films. ACS Nano 2010, 4:5245.
59. Chen L., Tang Y., Wang K., Liu C., Luo S. Direct electrodeposition of reduced graphene oxide on glassy carbon electrode and its electrochemical application. Electrochem. Commun. 2011, 13:133.
60. Liu C., Wang K., Luo S., Tang Y., Chen L. Direct electrodeposition of graphene enabling the one-step synthesis of graphene-metal nanocomposite films. Small 2011, 7:1203.
61. Gao F., Qi X., Cai X., Wang Q., Gao F., Sun W. Electrochemically reduced graphene modified carbon ionic electrode for sensitive sensing of rutin. Thin Solid Films 2012, 520:5064.
62. Hilder M., Winther-Jensen B., Li D., Forsyth M., MacFarlane D.R. Direct electro-deposition of graphene from aqueous suspensions. Phys. Chem. Chem. Phys. 2011, 13:9187.
63. Shao Y., Wang J., Engelhard M., Wang C., Lin Y. Facile and controllable electrochemical reduction of graphene oxide and its applications. J. Mater. Chem. 2010, 20:743.
64. Ping J., Wang Y., Fai K., Wu J., Ying Y. Direct electrochemical reduction of graphene oxide on ionic liquid doped screen-printed electrode and its electrochemical biosensing application. Biosens. Bioelectron. 2011, 28:204.
65. Jiang Y., Lu Y., Li F., Wu T., Niu L., Chen W. Facile electrochemical codeposition of "clean" graphene-Pd nanocomposite as an anode catalyst for formic acid electrooxidation. Electrochem. Commun. 2012, 19:21.
66. Dogan H.O., Ekinci D., Demir U. Atomic scale imaging and spectroscopic characterization of electrochemically reduced graphene oxide. Surf. Sci. 2013, 611:54.
67. Zhang X., Zhang D., Chen Y., Sun X., Ma Y. Electrochemical reduction of graphene oxide films: preparation, characterization and their electrochemical properties. Chin. Sci. Bull. 2012, 57:3045.
68. Li W., Liu J., Yan C. Reduced graphene oxide with tunable C/O ratio and its activity towards vanadium redox pairs for an all vanadium redox flow battery. Carbon 2013, 55:313.
69. Ramesha G.K., Sampath S. Electrochemical reduction of oriented graphene oxide films: an in situ Raman spectroelectrochemical study. J. Phys. Chem. C 2009, 113:7985.
70. Zhou Y., Chen J., Wang F., Sheng Z., Xia X. A facile approach to the synthesis of highly electroactive Pt nanoparticles on graphene as an anode catalyst for direct methanol fuel cells. Chem. Commun. 2010, 46:5951.
71. Peng X., Liu X., Diamond D., Lau K.T. Synthesis of electrochemically-reduced graphene oxide film with controllable size and thickness and its use in supercapacitor. Carbon 2011, 49:3488.
72. Gilje S., Han S., Wang M., Wang K.L., Kaner R.B. A chemical route to graphene for device applications. Nano Lett. 2007, 7:3394.
73. Liu S., Ou J., Wang J., Liu X., Yang S. A simple two-step electrochemical synthesis of graphene sheets film on the ITO electrode as supercapacitors. J. Appl. Electrochem. 2011, 41:881.
74. Eda G., Fanchini G., Chhowalla M. Large-area ultrathin films of reduced graphene oxide as a transparent and flexible electronic material. Nat. Nanotechnol. 2008, 3:270.
75. Yang J., Deng S., Lei J., Ju H., Gunasekaran S. Electrochemical synthesis of reduced graphene sheet-AuPd alloy nanoparticle composites for enzymatic biosensing. Biosens. Bioelectron. 2011, 29:159.
76. Grimshaw J. Electrochemical Reactions and Mechanisms in Organic Chemistry 2000, Elsevier, Amsterdam.
77. Wagenknecht J.H., Eberson L., Utley J.H.P. Organic Electrochemistry 2001, 453. Marcel Dekker, New York. fourth ed. H. Lund, O. Hammerich (Eds.).
78. Deng K., Zhou J., Li X. Direct electrochemical reduction of graphene oxide and its application to determination of l-tryptophan and l-tyrosine. Colloids Surf., B: Biointerfaces 2013, 101:183.
79. Yin H.S., Zhou Y.L., Ma Q., Ai S.Y., Ju P., Zhu L.S., Lu L.A. Electrochemical oxidation behavior of guanine and adenine on graphene-Nafion composite film modified glassy carbon electrode and the simultaneous determination. Process Biochem. 2010, 45:1707.
80. Stankovich S., Piner R.D., Nguyen S.T., Ruoff R.S. Synthesis and exfoliation of isocyanate-treated graphene oxide nanoplatelets. Carbon 2004, 44:3342.
81. Zeng F., Sun Z., Sang X., Diamond D., Lau K.T., Liu X., Su D.S. In situ one-step electrochemical preparation of graphene oxide nanosheet-modified electrodes for biosensors. ChemSusChem 2011, 4:1587.
82. Yang D., Velamakanni A., Bozoklu G., Park S., Stoller M., Piner R.D., Stankovich S., Jung I., Field D.A., Ventrice C.A., Ruoff R.S. Chemical analysis of graphene oxide films after heat and chemical treatments by X-ray photoelectron and micro-Raman spectroscopy. Carbon 2009, 47:145.
83. Biniak S., Szymanski G., Siedlewski J., Swiatkowski A. The characterization of activated carbons with oxygen and nitrogen surface groups. Carbon 1997, 35:1799.
84. Paredes J.I., Villar-Rodil S., Fernandez S., Martinez-Alonso A., Tascon J.M.D. Atomic force and scanning tunneling microscopy imaging of graphene nanosheets derived from graphite oxide. Langmuir 2009, 25:5957.
85. Yumitori S. Correlation of C1s chemical state intensities with the O1s intensity in the XPS analysis of anodically oxidized glass-like carbon samples. J. Mater. Sci. 2000, 35:139.
86. Ferrari A.C., Meyer J.C., Scardaci V., Casiraghi C., Lazzeri M., Mauri F., Piscanec S., Jiang D., Novoselov K.S., Roth S., Geim A.K. Raman spectrum of graphene and graphene layers. Phys. Rev. Lett. 2006, 97:187401.
87. Dresselhaus M.S., Dresselhaus G., Saito R., Jorio A. Raman spectroscopy of carbon nanotubes. Phys. Rep. 2005, 409:47.
88. Tuinstra F., Koenig J.L. Raman spectrum of graphite. J. Phys. Chem. 1970, 53:1126.
89. Wang H., Maiyalagan T., Wang X. Review on recent progress in nitrogen-doped graphene: synthesis, characterization, and its potential applications. ACS Catal. 2012, 2:781.
90. Ferrari A.C., Robertson J. Interpretation of Raman spectra of disordered and amorphous carbon. Phys. Rev. B 2000, 61:14095.
91. Basko D.M., Piscanec S. Electron-electron interaction and doping dependence of two-phonon Raman intensity in graphene. Phys. Rev. B 2009, 80:165413.
92. Lee J., Novoselov K.S., Shin H.S. Interaction between metal and graphene: dependence on the layer number of graphene. ACS Nano 2011, 5:608.
93. Gao Z., Yang W., Wang J., Yan H., Yao Y., Ma J., Wang B., Zhang M., Liu L. Electrochemical synthesis of layer-by-layer reduced graphene oxide sheets/polyaniline nanofibers composite and its electrochemical performance. Electrochim. Acta 2013, 91:185.
94. Chen C., Yang Q., Yang Y., Lv W., Wen Y., Hou P., Wang M., Cheng H. Self-assembled free-standing graphite oxide membrane. Adv. Mater. 2009, 21:3007.
95. Park S., An J.H., Piner R.D., Jung I., Yang D.X., Velamakanni A., Nguyen S.T., Ruoff R.S. Aqueous suspension and characterization of chemically modified graphene sheets. Chem. Mater. 2008, 20:6592.
96. Saito R., Jorio A., Souza A.G., Dresselhaus G., Dresselhaus M.S., Pimenta P.A. Probing phonon dispersion relations of graphite by double resonance Raman scattering. Phys. Rev. Lett. 2001, 88:02740.
97. Harima Y., Setodoi S., Imae I., Komaguchi K., Ooyama Y., Ohshita J., Mizota H., Yano J. Electrochemical reduction of graphene oxide in organic solvents. Electrochim. Acta 2011, 56:5363.
98. Ghosh S., Calizo I., Teweldebrhan D., Pokatilov E.P., Nika D.L., Balandin A.A., Bao W., Miao F., Lau C.N. Extremely high thermal conductivity of graphene: prospects for thermal management applications in nanoelectronic circuits. Appl. Phys. Lett. 2008, 92:151911.
99. Zhu Y., Cai W., Piner R.D., Velamakanni A., Ruoff R.S. Transparent self-assembled films of reduced graphene oxide platelets. Appl. Phys. Lett. 2009, 95:103104.
100. Seger B., Kamat P.V. Electrocatalytically active graphene-platinum nanocomposites. Roles of 2-D carbon support in PEM fuel cells. J. Phys. Chem. C 2009, 113:7990.
101. Huang N.M., Lim H.N., Chia C.H., Yarmo M.A., Muhamad M.R. Simple room-temperature preparation of high-yield large-area graphene oxide. Int. J. Nanomed. 2011, 6:3443.
102. Wang R., Wu Z., Chen C., Qin Z., Zhu H., Wang G., Wang H., Wu C., Dong W., Fan W., Wang J. Graphene-supported Au-Pd bimetallic nanoparticles with excellent catalytic performance in selective oxidation of methanol to methyl formate. Chem. Commun. 2013, 49:8250.
103. Metin Ö., Ho S.F., Alp C., Can H., Mankin M.N., Galtekin M.S., Chi M., Sun S. Ni/Pd core/shell nanoparticles supported on graphene as highly active and reusable catalyst for Suzuki-Miyaura cross-coupling reaction. Nano Res. 2013, 6:1018.
104. Shin H.J., Kim K.K., Benayad A., Yoon S.M., Park H.K., Jung I., Jin M.H., Jeong H., Kim J.M., Choi J., Lee Y.H. Efficient reduction of graphite oxide by sodium borohydride and its effect on electrical conductance. Adv. Funct. Mater. 2009, 19:1987.
105. Chua C.K., Pumera M. Reduction of graphene oxide with substituted borohydrides. J. Mater. Chem. A 2013, 1:1892.
106. Stankovich S., Dikin D.A., Dommett G.H.B., Kohkhass K.M., Zimney E.J., Stach E.A., Piner R.D., Nguyen S.T., Ruoff R.S. Graphene-based composite materials. Nature 2006, 443:282.
107. Basirun W.J., Sookhakian M., Baradaran S., Mahmoudian M.R., Ebadi M. Nanoscale Res. Lett. 2013, 8:397.
108. Gao W., Alemany L.B., Ci L., Ajayan P.M. New insights into the structure and reduction of graphite oxide. Nat. Chem. 2009, 1:403.
109. Ramachandran R., Felix S., Joshi G.M., Raghupathy B.P.C., Jung S.K., Grace A.N. Synthesis of graphene platelets by chemical and electrochemical route. Mater. Res. Bull. 2013, 48:3834.
110. Leng Y. Material Characterization: Introduction to Microscopic and Spectroscopic 2008, Wiley.
111. Wang J., Manga K.K., Bao Q., Loh K.P. High-yield synthesis of few-layer graphene flakes through electrochemical expansion of graphite in propylene carbonate electrolyte. J. Am. Chem. Soc. 2011, 133:8888.
112. Cote L.J., Kim F., Huang J. Langmuir-Blodgett assembly of graphite oxide single layers. J. Am. Chem. Soc. 2009, 131:1043.
113. Lu J., Yang J.X., Wang J.Z., Lim A., Wang S., Poh K.P. One-pot synthesis of fluorescent carbon nanoribbons, nanoparticles, and graphene by the exfoliation of graphite in ionic liquids. ACS Nano 2009, 3:2367-2375.
114. Qi B., He L., Bo X., Yang H., Guo L. Electrochemical preparation of free-standing few-layer graphene through oxidation-reduction cycling. Chem. Eng. J. 2011, 171:340.
115. Hernandez Y., Nicolosi V., Lotya M., Blighe F.M., Sun Z., De S., McGovern I.T., Holland B., Byrne M., Gun'ko Y.K., Boland J.J., Niraj P., Duesberg G., Krishnamurthy S., Goodhue R., Hutchison J., Scardaci V., Ferrari A.C., Coleman J.N. High-yield production of graphene by liquid-phase exfoliation of graphite. Nat. Nanotechnol. 2008, 3:563.
116. Xia Z.Y., Pezzini S., Treossi E., Giambastiani G., Corticelli F., Morandi V., Zanelli A., Bellani V., Palermo V. Adv. Funct. Mater. 2013, 23:4684.
117. Liu N., Luo F., Wu H., Liu Y., Zhang C., Chen J. One-step ionic-liquid-assisted electrochemical synthesis of ionic-liquid-functionalized graphene sheets directly from graphite. Adv. Funct. Mater. 2008, 18:1518.
118. Meng L., Park S. Preparation and characterization of reduced graphene nanosheets via pre-exfoliation of graphite flakes. Bull. Korean Chem. Soc. 2012, 33:209.
119. Chen W., Yan L. Preparation of graphene by a low-temperature thermal reduction at atmosphere pressure. Nanoscale 2010, 2:559.