Enhanced reduction of graphene oxide by high-pressure hydrothermal treatment

被引:210
作者
Diez, Noel [1 ]
Sliwak, Agata [1 ]
Gryglewicz, Stanislaw [1 ]
Grzyb, Bartosz [1 ]
Gryglewicz, Grazyna [1 ]
机构
[1] Wroclaw Univ Technol, Fac Chem, Dept Polymer & Carbonaceous Mat, PL-50344 Wroclaw, Poland
关键词
GRAPHITE OXIDE; GREEN REDUCTION; SOLVOTHERMAL REDUCTION; SUSPENSIONS; HYDROGEN; EXFOLIATION; ANTIOXIDANT; TEMPERATURE; NANOSHEETS; COMPOSITE;
D O I
10.1039/c5ra14461b
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A high-pressure assisted hydrothermal treatment is proposed as a facile, green and efficient route for the reduction of aqueous dispersions of graphene oxide. Reactions were performed in an autoclave at mild temperature (180 degrees C) using only water and nitrogen or hydrogen gas. No further separation or purification of the reduced products was required. X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction and thermogravimetric analysis revealed that the application of high pressure significantly enhanced oxygen removal. The C/O atomic ratio of the graphene oxide sheets increased from 1.65 to 5.29 upon conventional hydrothermal treatment using autogenous pressure. Higher C/O ratios of 6.35 and 7.93 were obtained for graphene oxides that were reduced under high-pressure of nitrogen and hydrogen, respectively. Specifically, the use of high-pressure hydrogen improved the removal of oxygen double-bonded to carbon. The introduction of covalently bonded heteroatoms, which is commonly observed for the use of reductants such as hydrazine, was not detected. Furthermore, high-pressure reduction led to a better restoration of the sp(2) conjugation than was obtained by conventional hydrothermal treatment, as determined by XPS and Raman spectroscopies. These findings illustrate the promise of high-pressure hydrothermal treatments for the eco-friendly mass production of reduced graphene oxide.
引用
收藏
页码:81831 / 81837
页数:7
相关论文
共 29 条
  • [1] The Role of Oxygen during Thermal Reduction of Graphene Oxide Studied by Infrared Absorption Spectroscopy
    Acik, Muge
    Lee, Geunsik
    Mattevi, Cecilia
    Pirkle, Adam
    Wallace, Robert M.
    Chhowalla, Manish
    Cho, Kyeongjae
    Chabal, Yves
    [J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (40) : 19761 - 19781
  • [2] Trends in green reduction of graphene oxides, issues and challenges: A review
    Agharkar, Mahesh
    Kochrekar, Sachin
    Hidouri, Slah
    Azeez, Musibau A.
    [J]. MATERIALS RESEARCH BULLETIN, 2014, 59 : 323 - 328
  • [3] Hydrogen-rich water for green reduction of graphene oxide suspensions
    Akhavan, O.
    Azimirad, R.
    Gholizadeh, H. T.
    Ghorbani, F.
    [J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2015, 40 (16) : 5553 - 5560
  • [4] Increasing the antioxidant activity of green tea polyphenols in the presence of iron for the reduction of graphene oxide
    Akhavan, O.
    Kalaee, M.
    Alavi, Z. S.
    Ghiasi, S. M. A.
    Esfandiar, A.
    [J]. CARBON, 2012, 50 (08) : 3015 - 3025
  • [5] SOLUBILITY OF HYDROGEN IN WATER IN A BROAD TEMPERATURE AND PRESSURE RANGE
    BARANENKO, VI
    KIROV, VS
    [J]. SOVIET ATOMIC ENERGY, 1989, 66 (01): : 30 - 34
  • [6] Influence of the pH on the synthesis of reduced graphene oxide under hydrothermal conditions
    Bosch-Navarro, Concha
    Coronado, Eugenio
    Marti-Gastaldo, Carlos
    Sanchez-Royo, J. F.
    Gomez Gomez, Maribel
    [J]. NANOSCALE, 2012, 4 (13) : 3977 - 3982
  • [7] Critical temperatures in the synthesis of graphene-like materials by thermal exfoliation-reduction of graphite oxide
    Botas, Cristina
    Alvarez, Patricia
    Blanco, Clara
    Santamaria, Ricardo
    Granda, Marcos
    Dolores Gutierrez, M.
    Rodriguez-Reinoso, Francisco
    Menendez, Rosa
    [J]. CARBON, 2013, 52 : 476 - 485
  • [8] Reduction of free-standing graphene oxide papers by a hydrothermal process at the solid/gas interface
    Chen, Hong
    Song, Zhanyu
    Zhao, Xiaochong
    Li, Xin
    Lin, Hong
    [J]. RSC ADVANCES, 2013, 3 (09): : 2971 - 2978
  • [9] Ding N. J., 2012, DIAM RELAT MATER, V21, P11
  • [10] The chemistry of graphene oxide
    Dreyer, Daniel R.
    Park, Sungjin
    Bielawski, Christopher W.
    Ruoff, Rodney S.
    [J]. CHEMICAL SOCIETY REVIEWS, 2010, 39 (01) : 228 - 240