| 氧化铝/碳纳米管复合材料的制备及表征 |
| Preparation and Characterization of Alumina/Carbon Nanotubes Composites |
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| 摘要: 采用聚乙烯醇对碳纳米管表面进行改性，通过化学沉淀法将Al(OH)3均匀沉积在碳纳米管表面，然后在氮气气氛下于500 ℃煅烧2 h，制备出氧化铝/碳纳米管复合材料。采用TEM、TG、DTA、XRD、IR、氮吸附脱附(比表面积及孔结构分析)等对氧化铝/碳纳米管复合材料进行表征，结果表明:未经聚乙烯醇改性的碳纳米管，氧化铝与碳纳米管相互分离;经聚乙烯醇改性的碳纳米管，氧化铝与碳纳米管结合良好。经聚乙烯醇改性的碳纳米管表面均匀覆盖一层聚乙烯醇膜，通过聚乙烯醇的吸附作用， Al(OH)3沉积在碳纳米管表面形成一层连续的覆盖层。 |
| 关键词: 氧化铝 碳纳米管 复合材料 |
| 基金项目: |
| Abstract: Alumina/carbon nanotubes composites were prepared by precipitating Al(OH)3 continuously on the surf-ace of carbon nanotubes modified by PVA， and subsequently calcinated at 500 ℃ for 2 h in nitrogen atmosphere. TEM， TG， DTA， XRD， IR and nitrogen adsorption/desorption(specific surface area and pore structure analysis) were used to characterize the products. The results show that alumina can not combine on the surface of carbon nanotubes not modified by PVA. A continuous PVA film will be formed on the PVA modified carbon nanotubes， thus Al(OH)3 could precipitate on the surface of carbon nanotubes and form a continuous layer. |
| Keywords: alumina carbon nanotubes composites |
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| 杨 琪,邓意达,胡文彬.氧化铝/碳纳米管复合材料的制备及表征[J].无机化学学报,2007,23(12):2049-2053. |
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