1.中国科学院上海应用物理研究所 上海 201800
2.上海交通大学附属中学 上海 200439
扫 描 看 全 文
Jihao LI, Zeru HUANG, Weibing HUANG. Preparation of reduced graphene oxide via gamma-ray irradiation. [J]. Journal of Radiation Research and Radiation Processing 36(1):010302-6(2018)
Jihao LI, Zeru HUANG, Weibing HUANG. Preparation of reduced graphene oxide via gamma-ray irradiation. [J]. Journal of Radiation Research and Radiation Processing 36(1):010302-6(2018) DOI: 10.11889/j.1000-3436.2018.rrj.36.010302.
在氮气气氛中,以乙二胺(EDA)作为自由基捕获剂,利用γ射线辐照技术在水体系中将氧化石墨烯(GO)辐照还原功能化,制备高分散性的氨基功能化还原氧化石墨烯(rGO)。考察吸收剂量(5.3、15、20、35.3 kGy)对rGO还原程度和功能化程度的影响,并通过傅里叶变换红外光谱(FT-IR)、紫外-可见光吸收光谱(UV-vis)、X射线光电子能谱(XPS)、X射线衍射(XRD)和热重分析(TGA)等方法分析GO的化学结构及还原程度。直观上看,辐照后,GO溶液逐渐呈现棕黑色,随着吸收剂量的增加,溶液颜色加深,且具有良好分散性。FT-IR谱显示,经过γ射线辐照后,初始GO上的羰基被还原去除,EDA小分子被连接到了rGO片层上。UV-vis、XPS、TGA及XRD谱图表明,随着吸收剂量的增大可以使氧化石墨烯还原程度提高,当吸收剂量35.3 kGy时,C/O可达7.21。EDA有机小分子与氧化性的·OH反应,在无氧条件下转化为还原性的自由基,参与到与GO之间的氧化还原反应中,并被接枝到GO层的表面。
We report here a rapid and cost-effective approach for reduction and functionalization of graphene oxide (GO) using ethylenediamine (EDA) in water medium by gamma-ray irradiation in a nitrogen atmosphere. The reduction degree, which can be controlled by varying the absorbed doses (5.3, 15, 20, and 35.3 kGy), was investigated in detail by ultra-violet visible (UV-vis) spectroscopy, Fourier transform infrared spectroscopy (FT-IR), X-ray diffract meter (XRD), X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA). It was found that the GO dispersion changed from yellow to black with increasing absorbed doses. The results of FT-IR, UV-vis, TGA, and XPS demonstrated that the reduction degree increased with absorbed dose and modification of GO with N-H from EDA molecules occurred. The rGO dispersion in water was stable without precipitate. The ratio of C/O reached 7.21 in rGO-at 35.3 kGy. In addition, a reduction mechanism for determining interactions among the EDA molecules, active radicals from the radiolysis of water, oxygen-containing groups on GO sheets, and some EDA molecules attached onto the rGO sheet because of the recombination of radicals is proposed.
氧化石墨烯还原氧化石墨烯γ射线乙二胺
Reduced graphene oxideGraphene oxideGamma-rayEthylenediamine
C N R Rao , A K Sood , K S Subrahmanyam , 等 . Graphene: the new two-dimensional nanomaterial . Angewandte Chemie International Edition , 2009 . 48 (42 ):7752 -7777 . DOI:10.1002/anie.200901678http://doi.org/10.1002/anie.200901678 .
J Shen , Y Hu , M Shi , 等 . Fast and facile preparation of graphene oxide and reduced graphene oxide nanoplatelets . Chemistry of Materials , 2009 . 21 (15 ):3514 -3520 . DOI:10.1021/cm901247thttp://doi.org/10.1021/cm901247t .
W S Hummers , R E Offeman . Preparation of graphitic oxide . Journal of the American Chemical Society , 1958 . 80 1339 DOI:10.1021/ja01539a017http://doi.org/10.1021/ja01539a017 .
S Park , R S Ruoff . Chemical methods for the production of graphenes . Nature Nanotech , 2009 . 4 217 -224 . DOI:10.1038/nnano.2009.58http://doi.org/10.1038/nnano.2009.58 .
H J Shin , K K Kim , A Benayad , 等 . Efficient reduction of graphite oxide by sodium borohydride and its effect on electrical conductance . Advanced Functional Materials , 2009 . 19 (12 ):1987 -1992 . DOI:10.1002/adfm.200900167http://doi.org/10.1002/adfm.200900167 .
H Wang , J T Robinson , X Li , 等 . Solvothermal reduction of chemically exfoliated graphene sheets . Journal of the American Chemical Society , 2009 . 131 (29 ):9910 -9911 . DOI:10.1021/ja904251phttp://doi.org/10.1021/ja904251p .
B Zhang , L Li , Z Wang , 等 . Radiation induced reduction: an effective and clean route to synthesize func-tionalized graphene . Journal of Materials Chemistry , 2012 . 22 (16 ):7775 -7781 . DOI:10.1039/C2JM16722Khttp://doi.org/10.1039/C2JM16722K .
P Kumar , B Das , B Chitara , 等 . Novel radiation-induced properties of graphene and related materials . Macromolecular Chemistry and Physics , 2012 . 213 (10-11 ):1146 -1163 . DOI:10.1002/macp.201100451http://doi.org/10.1002/macp.201100451 .
H Liu , W Miao , S Yang , 等 . Controlled synthesis of different shapes of Cu2O via γ-irradiation . Crystal Growth & Design , 2009 . 9 (4 ):1733 -1740 . DOI:10.1021/cg800703nhttp://doi.org/10.1021/cg800703n .
Y Zhang , H L Ma , Q Zhang , 等 . Facile synthesis of well-dispersed graphene by γ-ray induced reduction of graphene oxide . Journal of Materials Chemistry , 2012 . 22 (26 ):13064 -13069 . DOI:10.1039/C2JM32231Ehttp://doi.org/10.1039/C2JM32231E .
J Li , B Zhang , L Li , 等 . γ-ray irradiation effects on graphene oxide in an ethylenediamine aqueous solution . Radiation Physics and Chemistry , 2014 . 94 80 -83 . DOI:10.1016/j.radphyschem.2013.06.029http://doi.org/10.1016/j.radphyschem.2013.06.029 .
Y He , J Li , K Luo , 等 . Engineering reduced graphene oxide aerogel produced by effective γ-ray radiation-induced self-assembly and its application for continuous oil-water separation . Industrial & Engineering Chemistry Research , 2016 . 55 (13 ):3775 -3781 . DOI:10.1021/acs.iecr.6b00073http://doi.org/10.1021/acs.iecr.6b00073 .
Y L He , J H Li , L F Li , 等 . The synergy reduction and self-assembly of graphene oxide via gamma-ray irradiation in an ethanediamine aqueous solution . Nuclear Science and Techniques , 2016 . 27 (3 ):61 DOI:10.1007/s41365-016-0068-8http://doi.org/10.1007/s41365-016-0068-8.
张 伯武 , 俞 初红 , 沈 蓉芳 , 等 . 伽马射线辐照技术制备石墨烯基功能材料的研究进展 . 辐射研究与辐射工艺学报 , 2017 . 35 (2 ):020101 DOI:10.11889/j.1000-3436.2017.rrj.35.020101http://doi.org/10.11889/j.1000-3436.2017.rrj.35.020101 http://www.j.sinap.ac.cn/fushe/CN/Y2017/V35/I2/20101http://www.j.sinap.ac.cn/fushe/CN/Y2017/V35/I2/20101, .
Bowu ZHANG , Chuhong YU , Rongfang SHEN , 等 . Progress in research on preparation of graphene-based functional materials using gamma-ray irradiation technology . Journal of Radiation Research and Radiation Processing , 2017 . 35 (2 ):020101 DOI:10.11889/j.1000-3436.2017.rrj.35.020101http://doi.org/10.11889/j.1000-3436.2017.rrj.35.020101 http://www.j.sinap.ac.cn/fushe/CN/Y2017/V35/I2/20101http://www.j.sinap.ac.cn/fushe/CN/Y2017/V35/I2/20101, .
0
Views
4
下载量
0
CSCD
Publicity Resources
Related Articles
Related Author
Related Institution