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多孔氧募化铝模板催募化制备定向碳纳米管阵列

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  多孔氧募化铝模板催募化制备定向碳纳米管阵列

  老星,黄行九,黄家锐,黄仲婴,888真人,刘锦淮*

  干者单位老星 中国迷信院合肥智能机械切磋所,合肥,230031 黄行九 中国迷信院合肥智能机械切磋所,合肥,230031 黄家锐 中国迷信院合肥智能机械切磋所,合肥,230031 黄仲婴 中国迷信院合肥智能机械切磋所,合肥,230031 888真人 中国迷信院合肥智能机械切磋所,合肥,230031 刘锦淮* 中国迷信院合肥智能机械切磋所,合肥,230031

  摘要:

  在不加以度过渡金属做催募化剂的前提下,使用募化学气相堆法在二次阳极氧募化法制得的多孔氧募化铝模板中制备堆了定取向碳纳米管阵列.考查了不一堆温度以及退火处理对堆结实的影响.温度到臻600℃以上时,能违反掉落展齿的、定取向的多壁碳纳米管阵列;当堆温度投降到550℃摆弄时,堆结实中存放在碳纳米管、纳米纤维以及相像于曲的竹节状的构造;温度持续投降低到500'℃以下时,不能违反掉落碳纳米管或碳纳米纤维;从试验结实中却以得出产,在氧募化铝模板中堆碳纳米管经过中氧募化铝宗到了催募化乙炔裂松以及催募化堆的碳石墨募化成碳纳米管两种干用.佩的,退火处理固然却以提高堆的碳纳米管的石墨募化程度,条是也能会伸入新的缺隐.

  888真人: 定取向碳纳米管 多孔氧募化铝模板 募化学气相堆法 催募化干用

  DOI:10.1360/cjcp2006.19(1).79.5

  分类号:

  基金项目:

  Preparation of Well-aligned CNT Arrays Catalyzed with Porous Anodic Aluminum Oxide Template

  Xing Chen,Xing-jiu Huang,Jia-rui Huang,Zhong-ying Huang,Wei-hong Xu,Jin-huai Liu*

  Abstract:

  Well-aligned open-ended multi-walled carbon nanotube (MWCNT) arrays were prepared via chemical vapor deposition (CVD) method in porous anodic aluminum oxide (AAO) templates without depositing any transition metals as catalyst. Effects of the CVD temperature and heat treatment were studied in detail.Well-aligned open-ended MWCNT arrays were obtained at the CVD temperature above 600 ℃; when CVD temperature is reduced to around 550 ℃, CNTs, CNFs and other structures existed at the same time; no CNTs or carbon nanofibres (CNFs) could be found as the CVD temperature is below 500 ℃, and only amorphous carbon in the porous AAO template was found. Experimental results showed that the AAO template is catalytic during the CVD process, and it has the following two effects: to catalyze thermal decomposition of acetylene and to catalyze conversion of carbon decomposed from acetylene into CNTs or CNFs. Heat treatment could improve the graphitization degree, but it might also introduce new defects.

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