以间苯二酚和甲醛为反应前驱体,三聚氰胺为氮源,经溶胶-凝胶法制备出氮掺杂碳气凝胶(NCA),并对其进行CO2活化,扫描电子显微镜(SEM)测试表明,经CO2活化后的氮掺杂碳气凝胶(NACA),其骨架结构发生较明显变化,孔尺寸明显减小；氮吸附数据表明,CO2活化能够较好地起到造孔的作用,N-ACA的比表面积高达4082m2/g;热重曲线(TG和DTG)说明CO2与N-CA的反应主要从650℃开始,当温度升至1150℃时失重速率达到最大,选取最适宜的活化温度范围为800～1000℃；X光电子能谱(XPS)和元素分析测试表明,与N CA相比较,NACA具有的氮原子百分含量明显减少,但供电子能力较强的吡咯氮含量有所增加.
参考文献
| [1] | Maldonado-Hodar F.J.;Ferro-Garcia M.A.;Rivera-Utrilla J.;Moreno-Castilla C .Synthesis and textural characteristics of organic aerogels, transition-metal-containing organic aerogels and their carbonized derivatives[J].Carbon: An International Journal Sponsored by the American Carbon Society,1999(8):1199-1205. |
| [2] | Liang CH.;Guo SC.;Sha GY. .Resorcinol-formaldehyde aerogels prepared by supercritical acetone drying[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,2000(1/2):167-170. |
| [3] | D.Wu;R.Fu;S.Zhang;M.S.Dresselhaus;G.Dresselhaus .Preparation of low-density carbon aerogels by ambient pressure drying[J].Carbon: An International Journal Sponsored by the American Carbon Society,2004(10):2033-2042. |
| [4] | Sircar S.;Rao MB.;Golden TC. .ACTIVATED CARBON FOR GAS SEPARATION AND STORAGE[J].Carbon: An International Journal Sponsored by the American Carbon Society,1996(1):1-12. |
| [5] | T.Yamamoto;A.Endo;T.Ohmori;M.Nakaiwa .Porous properties of carbon gel microspheres as adsorbents for gas separation[J].Carbon: An International Journal Sponsored by the American Carbon Society,2004(8/9):1671-1676. |
| [6] | 郭志军,朱红,张新卫,魏永生,郭玉宝.微波法合成Pt/碳气凝胶催化剂的电催化性能研究[J].功能材料,2010(09):1611-1614. |
| [7] | 袁磊,袁秋月,王朝阳,付志兵,张厚琼,唐永建.碳气凝胶及活化碳气凝胶电极材料制备与性能[J].强激光与粒子束,2011(03):671-674. |
| [8] | 袁秋月,王朝阳,付志兵,唐永建,涂海燕.CO2活化温度对碳气凝胶结构及氢吸附性能影响[J].强激光与粒子束,2011(07):1853-1856. |
| [9] | 孙志鹏,王朝阳,韦建军,付志兵,张厚琼,杨曦,唐永建.三聚氰胺-甲醛气凝胶模板的结构与热稳定性[J].强激光与粒子束,2012(02):379-382. |
| [10] | 王晓峰,高琦,梁吉.纳米氧化钌的制备及其碳纳米管复合电极的超电容特性[J].稀有金属材料与工程,2006(02):295-298. |
| [11] | 张晶,孔令斌,蔡建军,杨贞胜,罗永春,康龙.电化学混合电容器用新型聚吡咯/介孔碳纳米复合电极[J].物理化学学报,2010(06):1515-1520. |
| [12] | 郝广平,米娟,李多,曲文慧,吴挺俊,李文翠,陆安慧.分等级孔道含氮多孔炭作超级电容器电极材料的研究[J].新型炭材料,2011(03):197-203. |
| [13] | Donghui Long;Jie Zhang;Junhe Yang .Chemical state of nitrogen in carbon aerogels issued from phenol-melamine-formaldehyde gels[J].Carbon: An International Journal Sponsored by the American Carbon Society,2008(9):1259-1262. |
| [14] | Ralph T Yang.Adsorbents:fundamentals and application[M].New Jersey:John Wiley]Sons Inc Hoboken,2003:8-17. |
| [15] | K. Jurewicz;K. Babel;A. Ziolkowski;H. Wachowska .Ammoxidation of active carbons for improvement of supercapacitor characteristics[J].Electrochimica Acta,2003(11):1491-1498. |
| [16] | Lee Y H;Lee Y F;Chang K H et al.Novel synthesis of N-doped porous carbons from collagen for electrocatalytic production of H2 O2[J].Electrochemistry Communications,2011,13:50-53. |
| [17] | K. Jurewicz;K. Babel;R. Pietrzak .Capacitance properties of multi-walled carbon nanotubes modified by activation and ammoxidation[J].Carbon: An International Journal Sponsored by the American Carbon Society,2006(12):2368-2375. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%