制备纳米发光氧化锌的新方法

A novel method for preparing zinc oxide nanoparticals with photoluminescence at room temperature

采用一种全新的高电压电解方法,制得了室温条件下具有可见光致荧光的ZnO颗粒。这一制备技术具有取材容易、设备简单、条件温和、对环境友好、具有绿色合成的特点。探讨了电解制备ZnO的最佳实验条件。用X射线衍射、荧光分光光度计、透射电镜、透光率等实验手段对电解样品进行了表征,并对反应机理进行了初步探讨。结果表明,该方法制得的ZnO颗粒粒度小,结构为纤锌矿型多晶,室温光致荧光效应强。

A new electrolysis method was developed for preparation of zinc oxide(ZnO)par-ticles,which gave visible photoluminescence at room temperature. The new preparation method of ZnO presents advantages over the traditional techniques. The raw materials can be obtained easily and the equipment is not expensive. The reaction conditions are moderate and the technique is less hazardous and more environmentally friendly. The electrolyzed products were studied using X-ray diffraction(XRD),transparent electron microscopy(TEM). Measurements of optical transmission spectra was used to perform the structural and the optical characterizations of the ZnO. The results show that the ZnO particles have wurtzite structure with random orientation and strong visible photoluminescence at room temperature.