| 纳米CuO的形貌控制合成及其性能研究 |
| Synthesis and Properties of Shape-controlled CuO Nanocrystals |
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| 摘要: |
| 关键词: 纳米CuO 形貌控制 合成 催化性能 |
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| Abstract: The CuO nanocrystals were prepared by quick-precipitation and hydrolysis method respectively, using Cu(Ac)2 and NaOH as starting materials. The as-prepared CuO nanocrystals were characterized by XRD, TEM, XPS, UV-Visible absorption spectroscopy and BET. The catalysis of CuO nanocrystals of different morphologies on ammonium perchlorate decomposition was investigated by thermal analysis. Results indicated the variation in temperature for NaOH addition played an important role in the shape of the CuO nanocrystals in precipitation method. Well-dispersed spherical CuO nanocrystals with an average size of 6 nm could be obtained when NaOH was added at 100 ℃ and spindle-shaped CuO nanocrystals exceeding 100 nm in diameter were obtained when NaOH was added at room temperature. Needle-shaped CuO nanocrystals could be prepared by the hydrolysis method, and the presence of small amounts of cetyltrimethylammonium bromide (CTAB) could make needle-shaped CuO well dispersed. The catalytic activity of CuO nanocrystals of different morphologies on ammonium perchlorate decomposition was high. The 2% of spherical CuO nanocrystals could make higher decomposition temperature of ammonium perchlorate decreased to 102 ℃. The exothermic quantity of decomposition was from 590 J·g-1 up to 1 420 J·g-1. |
| Keywords: nanocrystalline CuO shape-controlled synthesis catalytic property |
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| 摘要点击次数: 1288 |
| 全文下载次数: 1966 |
| 朱俊武,张维光,王恒志,杨绪杰,陆路德,汪 信.纳米CuO的形貌控制合成及其性能研究[J].无机化学学报,2004,20(7):863-867. |
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