| 超声化学合成半导体氧化锌纳米杯 |
| Sonochemical Synthesis of Semiconductor ZnO Nanocups |
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| 摘要: 在室温下，以硝酸锌和六次甲基四胺的水溶液为前驱体溶液，通过超声辐照20 min制得了半导体ZnO纳米杯。粉体用XRD、EDS、FESEM、TEM、SAED和HRTEM进行了表征。结果表明：ZnO纳米杯为六方纤锌矿相的单晶结构，产量高，杯高在90 nm左右。讨论了超声时间和碱的浓度对晶体生长的影响，分析了可能的反应机理。室温下的PL光谱表明粉体有在389 nm处较强的激子发射和中心区在530 nm处较宽的黄绿光发射。 |
| 关键词: ZnO 半导体 超声化学 纳米杯 |
| 基金项目: |
| Abstract: Semiconductor ZnO nanocups have been successfully obtained through ultrasound irradiating the precursor aqueous solution of Zn(NO3)2·6H2O and hexamethylenetetramine ((CH2)6N4, HMT) for 20 min at room temperature. The as-obtained powder was characterized by XRD, EDS, FESEM, TEM, SAED and HRTEM. The experimental results indicate that large-scale ZnO nanocups are of hexagonal wurtzite single-crystalline structure. The length of nanocup is about 90 nm. The possible formation mechanism associated with the sonochemical effect of sonication time and HMT concentrations is discussed. The room temperature PL spectrum showed a strong exciton emission with peak located at 389 nm and a week broad yellow-green emission located at center of 530 nm respectively. |
| Keywords: zinc oxide semiconductor sonochemistry nanocup |
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| 邓崇海,胡寒梅,黄显怀,朱绍峰.超声化学合成半导体氧化锌纳米杯[J].无机化学学报,2009,25(10):1742-1746. |
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