Preparation of grapheme by detonation using liquid explosive
-
摘要: 强氧化性酸的环境下,石墨易形成石墨层间化合物(GICs),利用石墨这一特性,将天然石墨置于发烟硝酸中,并加入硝基甲烷,配制成液体炸药,使用塑料容器盛装后放入爆轰反应釜中引爆。收集爆轰产物,并利用XRD、EDX、SEM、TEM、Raman光谱、比表面积与孔隙度分析仪进行分析,结果显示:制备出的石墨烯具有良好的晶体特性并呈现极薄的片状结构,其比表面积达到天然石墨的9.16倍,平均厚度约为14.73 nm。Abstract: Graphite intercalation compounds (GICs) can be obtained when graphite is placed in strong oxidizing acids. Using this characteristic, we prepare liquid explosive by putting natural graphite in strong HNO3 and mixing it with CH3NO2. Then we poured the mixture into a plastic container and placed the container at the center of a detonation reactor to ignite the explosive mixture. After the detonation, we collected and analyzed the soot by XRD, EDX, SEM, TEM, Raman spectroscopy, the specific surface area and porosity analyzer. Results indicate that the prepared grapheme possesses perfect crystal properties and exhibits a structure of thin sheets, with a specific surface area 9.16 times that of natural graphite and an average thickness of about 14.73 nm.
-
Key words:
- mechanics of explosion /
- grapheme flakes /
- liquid explosive /
- detonation split /
- specific surface area
-
表 1 利用XRD测得的天然石墨与爆轰产物的参数
Table 1. Parameters of natural graphite and detonation soot from XRD
样品 2θ/(°) d002/nm B002/pm D/nm 爆轰产物 26.48 0.34 9.67 14.73 天然石墨 26.54 0.34 3.57 39.95 -
[1] Basua S, Bhattacharyyab P. Recent developments on graphene and graphene oxide based solid state gas sensors[J]. Sensors and Actuators B: Chemical, 2012, 173:1-21. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=f623ef920d1f3f88257d361964359c33 [2] 江莞, 范宇驰, 刘霞, 等.机械剥离法制备石墨烯及其在石墨烯/陶瓷复合材料制备中的应用[J].中国材料进展, 2011, 30(1):12-20. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zgcljz201101004Jiang Wan, Fan Yuchi, Liu Xia, et al. Preparation of graphene by mechanical exfoliation and its application in preparation of graphene/ceramic composites[J]. Materials China, 2011, 30(1):12-20. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zgcljz201101004 [3] Hernandez Y, Nicolosi V, Lotya M, et al. High-yield production of graphene by liquid-phase exfoliation of graphite[J]. Nature Nanotechnology, 2008, 3(9):563-568. doi: 10.1038/nnano.2008.215 [4] Qian Wen, Hao Rui, Hou Yanglong, et al. Solvothermal-assisted exfoliation process to produce graphene with high yield and high quality[J]. Nano Research, 2009, 2(9):706-712. doi: 10.1007/s12274-009-9074-z [5] Sun Guilei, Li Xiaojie, Yan honghao. Detonation of expandable graphite to make micron powder[J]. New Carbon Material, 2007, 22(3):242-246. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=xxtcl200703008 [6] Heer W A de, Berger C, Wu Xiaosong, et al. Epitaxial graphene[J]. Solid State Communications, 2007, 143(1/2):92-100. http://d.old.wanfangdata.com.cn/Periodical/wlhxxb201001040 [7] Wang Zhijuan, Zhou Xiaozhu, Zhang Juan, et al. Direct electrochemical reduction of single-layer graphene oxide and subsequent functionalization with glucose oxidase[J]. The Journal of Physical Chemistry C, 2009, 113(32):14071-14075. doi: 10.1021/jp906348x [8] Keun Soo Kim, Zhao Yue, Jang Houk, et al. Large-scale pattern growth of graphene films for stretchable transparent electrodes[J]. Nature, 2009, 457(7230):706-710. doi: 10.1038/nature07719 [9] Sun Guilei, Li Xiaojie, Wang Qiquan, et al. Synthesis of carbon-coated iron nanoparticles by detonation technique[J]. Materials Research Bulletin, 2010, 45(5):519-522. doi: 10.1016/j.materresbull.2010.02.004 [10] Sun Guilei, Li Xiaojie, Yan Honghao, et al. A simple detonation method to synthesize carbon-coated cobalt[J]. Journal of Alloys and Compounds, 2009, 473(1/2):212-214. http://www.sciencedirect.com/science/article/pii/S0925838808008074 [11] Luo Ning, Li Xiaojie, Wang Xiaohong, et al. Synthesis and characterization of carbon-encapsulated iron/iron carbide nanoparticles by a detonation method[J]. Carbon, 2010, 48(13):3858-3863. doi: 10.1016/j.carbon.2010.06.051 [12] 孙贵磊.球状纳米铜颗粒的爆轰法制备[J].爆炸与冲击, 2012, 32(3):273-277. doi: 10.3969/j.issn.1001-1455.2012.03.008Sun Guilei. Spherical copper nano-particles prepared by a detonation technique[J]. Explosion and Shock Waves, 2012, 32(3):273-277. doi: 10.3969/j.issn.1001-1455.2012.03.008 [13] 李瑞勇, 闫鸿浩, 王小红, 等.粉状混合炸药爆轰合成纳米氧化铝实验研究[J].爆炸与冲击, 2013, 33(增刊):157-160.Li Ruiyong, Yan Honghao, Wang Xiaohong, et al. Ultrafine aluminum oxide particles prepared by detonation of powder explosive mixtures[J]. Explosion and Shock Waves, 2013, 33(suppl):157-160. [14] 曲艳东, 李晓杰, 张越举, 等.硫酸亚钛爆轰制备纳米TiO2粒子[J].功能材料, 2006, 11(37):1838-1840. http://d.old.wanfangdata.com.cn/Periodical/gncl200611046Qu Yandong, Li Xiaojie, Zhang Yueju, et al. Prepation of nanosized TiO2 particles utilizing Ti2(SO4)3 by detonation technique[J]. Journal of Functional Materials, 2006, 11(37):1838-1840. http://d.old.wanfangdata.com.cn/Periodical/gncl200611046 [15] 孙贵磊, 闫鸿浩, 李晓杰.爆轰制备球形纳米γ-Fe2O3粉末[J].材料开发与应用, 2006, 21(5):5-7. doi: 10.3969/j.issn.1003-1545.2006.05.002Sun Guilei, Yan Honghao, Li Xiaojie, et al. Synthesis of nanometer globuler γ-Fe2O3 powder through detonation[J]. Development and Application of Materials, 2006, 21(5):5-7. doi: 10.3969/j.issn.1003-1545.2006.05.002 [16] Xie Xinghua, Li Xiaojie, Zhao Zheng, et al. Growth and morphology of nanometer LiMn2O4 powder[J]. Powder Technology, 2006, 169(3):143-146. doi: 10.1016/j.powtec.2006.08.007 [17] 王小红, 李晓杰, 张越举, 等.爆轰法制备纳米MnFe2O4的实验研究[J].高压物理学报, 2007, 21(2):173-177. doi: 10.3969/j.issn.1000-5773.2007.02.009Wang Xiaohong, Li Xiaojie, Zhang Yueju, et al. Experiment research of nano manganese ferrite powders prepared by detonation method[J]. Chinese Journal of High Pressure Physics, 2007, 21(2):173-177. doi: 10.3969/j.issn.1000-5773.2007.02.009 [18] He Chunnian, Zhao Naiqin, Shi Chunsheng, et al. A practical method for the production of hollow carbon onion particles[J]. Journal of Alloys and Compounds, 2006, 425(1):329-333. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=7571df244585eaa99041092a58df03bf