超声化学合成半导体氧化锌纳米杯  

Sonochemical Synthesis of Semiconductor ZnO Nanocups

作　　者：邓崇海[1] 胡寒梅[2,3] 黄显怀[4] 朱绍峰[2,3] 

机构地区：[1]合肥学院化学与材料工程系,合肥230022 [2]安徽建筑工业学院材料与化学工程学院,合肥230022 [3]安徽建筑工业学院先进建筑材料安徽省重点实验室,合肥230022 [4]安徽建筑工业学院环境工程学院,合肥230022

出　　处：《无机化学学报》2009年第10期1742-1746,共5页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.20501002);安徽省高校优秀青年基金项目(No.2009SQRZ104ZD)资助

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90nm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。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 sonoehemical 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.

关 键 词：ZNO 半导体 超声化学 纳米杯 

分 类 号：O611.62[理学—无机化学] O614.241[理学—化学]