多孔氧化铝模板电沉积法制备ZnO纳米结构阵列的研究

Study of Preparing ZnO Nanostructure Array within Porous Alumina Membranes by Electrochemical Deposition

利用直流电化学沉积技术,在多孔氧化铝模板内,通过先沉积Zn(OH)2/ZnCO3,然后在300℃下进行热分解,制得了ZnO纳米点阵结构。扫描电镜结果表明多孔氧化铝模板孔道呈六角形分布,孔径约为55 nm,孔间距约为100 nm,且孔道上下贯通平行排列。X射线衍射表明多孔氧化铝模板为非晶结构,孔内组装的ZnO具有多晶纤锌矿结构。光致发光谱表明ZnO/PAM复合体系同空氧化铝模板相比在420 nm处具有较强的蓝光发射。

Based on the direct current electrochemical deposition technology, the ZnO nano structure array is successfully prepared through depositing Zn （OH）2/ZnCO3 and then thermal decomposing them at 300 ℃. Scan electron microscopy results indicate that the morphology of the porous alumina membranes （PAM） basically present highly ordered hexagonal distribution, with the pore size and inter-pore distance of 55 nm and 100 nm, respectively. In addition, we can also find the nano-pores are straight and parallel with each other. X-ray diffraction reveals that the PAM are amorphous, and the ZnO within the PAM has wurtzite structure. Photoluminescence spectrum demonstrates that ZnO/PAM have a strong blue emission at 420 nm compared with PAM.