| 在酸性条件下合成氧化亚铜纳米立方体(英) |
| Growth of Cuprite Nanocubes under Acidic Conditions |
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| 摘要: 在微酸性(pH：4～6)的水热体系中130 ℃反应18 h合成了氧化亚铜纳米粒子，粒径约为100 nm，呈立方体外形。乙二胺和十六烷基胺在反应体系中充当缓冲试剂，调节反应液的pH值并控制体系中游离Cu2+的浓度，使得Cu2+不会被迅速还原成单质铜。所合成的纳米立方体的能带宽度约为2.51 eV，比氧化亚铜体材料和氧化亚铜纳米线蓝移了0.51 eV和0.17 eV，它有利于把太阳光谱中能量高的可见光转化成其他形式的能量。 |
| 关键词: 纳米立方体 酸性条件 氧化亚铜 |
| 基金项目: |
| Abstract: A novel hydrothermal approach was developed to prepare cuprite at 130 ℃ for 18 h under slightly acidic conditions (pH: 4～6). The yielded particles are, about 100 nm in size, cubic in shape. It was found that diaminoethane and hexadecylamine acting as the buffering reagents for controlling the pH value and concentration of free Cu2+ in the solution play a critical role to avoid Cu2+ being reduced to Cu. The band gap of the nanocubes is about 2.51 eV, which is blue shifted 0.51 eV compared to that of the corresponding bulk material and 0.17 eV compared to that of the nanowires of cuprite. The material could be a promising candidate in solar energy conversion since the sample can make use of higher energy visible lights of solar spectrum. PACS: 71.35.Cc. |
| Keywords: nanocubes acidic conditions Cu2O |
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| 朱红飞,陈乾旺,牛和林,彭振猛,孙 钱.在酸性条件下合成氧化亚铜纳米立方体(英)[J].无机化学学报,2004,20(10):1172-1176. |
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