| 柠檬酸用量对碳纳米管制备的影响 |
| Effect of Citric Acid Dosage on Carbon Nanotubes Preparation |
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| 摘要: |
| 关键词: 柠檬酸 催化剂 碳纳米管 |
| 基金项目: |
| Abstract: Carbon nanotubes (CNTs) were prepared by chemical vapor catalytic deposition using the catalyst prepared by citric acid complexometry. The effect of the dosage of citric acid on the CNTs yield and morphologywas studied. The transmission electron microscopy and X-ray diffraction were used to characterize CNTs morphology and crystal structures of the catalysts, respectively. The results show that the dosage of citric acid can greatly affect the CNTs yield and morphology: the CNTs have a high yield about 1 345.8% (1 h) at a 2∶1 molar ratio of citric acid and metal ion, and the obtained CNTs diameter is relatively narrow distributed (25～30 nm); when themolar ratio of citric acidto metal ion is 3∶1, the CNTs yield is about 407.2% (1 h), and the obtained CNTs diameter is relatively wide distributed (25～50 nm), moreover, the CNTs is more rough than that obtained with 2∶1 molar ratio of citric acid to metal ion. |
| Keywords: citric acid catalyst carbon nanotubes |
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| 摘要点击次数: 1368 |
| 全文下载次数: 1909 |
| 宋利君,江奇,朱晓彤,赵勇.柠檬酸用量对碳纳米管制备的影响[J].无机化学学报,2006,22(7):1330-1334. |
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