采用紫外光辐照不同氧化剂体系对碳微球（CMSs）表面进行化学修饰，引入含氧官能团以改善其表面惰性。利用场发射扫描电子显微镜对样品进行形貌分析，通过红外光谱、热重分析、X射线光电子能谱和酸碱滴定法对处理后样品表面的含氧官能团进行定性和定量分析，并观察了氧化后CMSs在乙醇中的分散性。结果表明：UV辐照下3种氧化体系（H2O2，H2O2＋HNO3，H2O2＋H2SO4）修饰的CMSs表面均引入了含O官能团；相对而言，UV／H2O2＋H2SO4体系氧化处理的CMSs表面引入的含氧官能团总量最多，这为碳材料提供了一种新型高效的氧化技术。
Carbon microspheres （CMSs） were modified to improve their surface activity using different oxidant systems under ultraviolet （UV） irradiation. The morphologies of all samples were characterized by field emission scanning electron microscopy, and the functional groups introduced onto the surface of CMSs were analyzed qualitatively and quantitatively by Fourier transformation infi＇ared spectrometry, thermogravimetry, X-ray photoelectronic spectrometry and acid-base titration. The dispersion of oxidized CMSs in ethanol was also observed. The results show that oxygen-containing groups were introduced onto the surface of CMSs in the three oxidative systems （H2O2 , H2O2/HNO3, H2O2/H2SO4 ） under UV in＇adiation. The CMSs oxidized by UV/H2O2 ＋ H2SO4 showed the most amounts of oxygen-containing groups, which give a efficient method to oxidize carbon materials.
参考文献
| [1] | Wang Yong-Gang;Korai Yozo;Mochida Isao .Carbon disc of high density and strength prepared from synthetic pitch-derived mesocarbon microbeads[J].Carbon: An International Journal Sponsored by the American Carbon Society,1999(7):1049-1057. |
| [2] | Yi Cheng Liu;Xin Ping Qiu;Yu Qing Huang .Methanol electro-oxidation on mesocarbon microbead suported Pt catalysts[J].Carbon: An International Journal Sponsored by the American Carbon Society,2002(13):2375-2380. |
| [3] | 吕永根;凌立成;刘朗 .中间相炭微球的活化[J].煤炭转化,1999,22(02):66—70. |
| [4] | Alcantara R.;Lavela P.;Tirado JL.;Mateos JMJ.;de Salazar CG.;Stoyanova R.;Zhecheva E.;Madrigal FJF. .Characterisation of mesocarbon microbeads (MCMB) as active electrode material in lithium and sodium cells[J].Carbon: An International Journal Sponsored by the American Carbon Society,2000(7):1031-1041. |
| [5] | 姚承照,宋怀河,冯志海,李仲平,李嘉禄.碳纳米管表面硝酸氧化改性研究[J].宇航材料工艺,2008(02):34-38. |
| [6] | Liu J;Rinzler A G;Smalley R E .Fullerene Pipes[J].Science,1998,280(5 367):1253-1256. |
| [7] | 刘红艳 .沥青基气相生长碳材料的表面修饰[D].太原:太原理工大学,2009. |
| [8] | 刘旭光,郭明聪,杨永珍,刘红艳,许并社.高锰酸钾对炭微球表面的改性[J].新型炭材料,2010(02):103-108. |
| [9] | Li X.;Horita K. .Electrochemical characterization of carbon black subjected to RF oxygen plasma[J].Carbon: An International Journal Sponsored by the American Carbon Society,2000(1):133-138. |
| [10] | Man-Lung Sham;Jang-Kyo Kim .Surface functionalities of multi-wall carbon nanotubes after UV/Ozone and TETA treatments[J].Carbon: An International Journal Sponsored by the American Carbon Society,2006(4):768-777. |
| [11] | Xuguang Liu;Yongzhen Yang;Xian Lin .Deoiled asphalt as carbon source for preparation of various carbon materials by chemical vapor deposition[J].Fuel Processing Technology,2006(10):919-925. |
| [12] | Boehm H P;Diehl E;Heck W et al.Surface Oxides of Carbon[J].Angew Chem lnt Ed,1964,3(10):669-677. |
| [13] | Hu H.;Zhao B.;Hamon MA.;Itkis ME.;Haddon RC.;Bhowmik P. .Determination of the acidic sites of purified single-walled carbon nanotubes by acid-base titration[J].Chemical Physics Letters,2001(1/2):25-28. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%