以商业活性炭为原料,采用真空浸渍法结合高温真空热处理工艺,制备出多孔C/Fe纳米复合材料.实验采用氮气吸附法测量了C/Fe纳米复合材料的比表面积和孔径分布,并利用XRD和TEM表征了其结构和形貌.实验结果显示:C/Fe纳米复合材料的比表面积为450~650m2/g,并保留了活性炭介孔尺度的多孔结构特性.C/Fe纳米复合材料由非晶碳、碳纳米带以及铁纳米粒子构成,纳米铁颗粒均匀分布在非晶碳基体中,石墨化的碳纳米带包裹纳米铁颗粒并向外伸展相互连接,形成碳纳米网络结构.并就反应过程以及过渡金属对非晶碳石墨化的催化机理进行了探讨.
参考文献
[1] | Texier-Mandokia N,Dentzer J,Piqueroa T,et al.Hydrogen storage in activated carbon materials:role of the nanoporous texture.Carbon,2004,42(12/13):2744-2747. |
[2] | Dillon A C,Heben M J.Hydrogen storage using carbon adsorbents:past,present and future.Appl.Phys.A,2001,72(2):133-142. |
[3] | Frackowiak E,Beguin F.Carbon materials for the electrochemical storage of energy in capacitors.Carbon,2001,39(6):937-950. |
[4] | Qu D Y.Studies of the activated carbons used in double-layer supercapacitors.Journal of Power Sources,2002,109(2):403-411. |
[5] | Shi H.Activated carbons and double layer capacitance.Electrochim.Acta,1996,41(10):1633-1639. |
[6] | 周鹏伟,李宝华,康飞宇,等.椰壳活性炭基超级电容器的研制与开发.新型炭材料,2006,21(2):125-131. |
[7] | Chen C,Kennel E B,Stiller A H,et al.Carbon foam derived from various precursors.Carbon,2005,44(8):1535-1543. |
[8] | Fuertes A B,Alvarez S.Graphitic mesoporous carbons synthesised through mesostructured silica templates.Carbon,2004,42(15):3049-3055. |
[9] | Barata-Rodrigues P M,Mays T J,Moggridge G D.Structured carbon adsorbents from clay,zeolite and mesoporous aluminosilicate templates.Carbon,2003,41(12):2231-2246. |
[10] | Kyotani T,Ma Z X,Tomita A.Template synthesis of novel porous carbons using various types of zeolites.Carbon,2003,41(7):1451-1459. |
[11] | Su F B,Zeng J H,Yu Y S,et al.Template synthesis of microporous carbon for direct methanol fuel cell application.Carbon,2005,43(11):2366-2373. |
[12] | Inagaki M,Suwa T.Pore structure analysis of exfoliated graphite using image processing of scanning electron micrographs.Carbon,2001,39(6):915-920. |
[13] | Franklin R E.Crystallite growth in graphitizing and non-graphitizing carbons.Proc.Roy.Soc.,1951,A209(1097):196-218. |
[14] | Harris P J F.New perspectives on the structure of graphitic carbons.Critical Reviews in Solid State and Materials Sciences,2005,30:235-253. |
[15] | Harris P J F,Liu Z,Suenaga K.Imaging the atomic structure of activated carbon.J.Phys.Condens.Matter,2008,20(36):362201-1-5. |
[16] | Qu D,Shi H.Studies of activated carbons used in double-layer capacitors.Journal of power sources.,1998,74(1):99-107. |
[17] | Salitra G,Soffer A,Eliad L,et al.Carbon electrodes for doublelayer capacitors Ⅰ.relations between ion and pore dimensions.J.Electrochem.Soc.,2000,147(7):2486-2493. |
[18] | 孟庆函,刘玲,宋怀.特定孔径分布活性炭的制备及电容性能研究.功能材料,2005,2(36):228-230. |
[19] | 庄新国,杨裕生,嵇友菊,等(ZHUANG Xin-Guo,et al).超级电容器炭电极材料孔结构对其性能的影响.物理化学学报(Acta Phys.-Chim.Sin.),2003,19(8):689-694. |
[20] | Sevilla M,Fueaes A B.Catalytic graphitimtion of templated meso-porous carbons.Carbon,2006,44(3):468-474. |
[21] | Ding F,Bolton K,Rose' n A.Nucleation and growth of singlewalled carbon nanotubes:a molecular dynamics study.J.Phys.Chem.B,2004,108(45):17369-17377. |
[22] | Harris P J F.Solid state growth mechanisms for carbon nanotubes.Carbon,2007,45(2):229-239. |
[23] | Gorbunov A,Jost O,Pompe W,et al.Solid-liquid-solid growth mechanism of single-wall carbon nanotubes.Carbon,2002,40(1):113-118. |
[24] | Moisala A,Nasibulin A G,Kauppinen E I.The role of metal nanoparticles in the catalytic production of single-walled carbon nanotubes:a review.J.Phys.:Condens.Matter,2003,15(42):S3011-S3035. |
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%