(中南大学 冶金科学与工程学院，长沙 410083)
摘 要: 以SnO2导电玻璃为阴极，使用循环伏安法及计时电流法研究0.1 mol/L硝酸镁水溶液体系中氢氧化镁的电沉积过程，并对恒电势沉积法制备的多孔Mg(OH)2薄膜的形貌、物相及光学性质进行表征。结果表明：所得Mg(OH)2薄膜呈很明显的(011)面择优取向；随着沉积电势或初始pH值的增加，Mg(OH)2二次成核的数量增加；在沉积时间固定为10 min的情况下，沉积电势为-1.2、-1.3和-1.4 V的薄膜在可见光范围内(390~780 nm)的平均透过率依次为90.21%、69.39%和47.12%。
关键字: 氢氧化镁；薄膜；电沉积；形貌；透过率
（School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China）
Abstract:Electrodeposition process of Mg(OH)2 on SnO2 coated glass was studied by cyclic voltammetry and chronoamperometry in 0.1 mol/L aqueous magnesium nitrate solution at room temperature. Characterization of morphology, phase, optical properties of the porous Mg(OH)2 thin films was carried out by FESEM, GAXRD and UV-Vis. Results show that the thin films have (011) preferred orientation. The number of secondary nucleation increases with the increase of applied potential or solution pH. The average transmittances of the porous Mg(OH)2 films deposited at -1.2, -1.3 and -1.4 V over the visible region (390-780 nm) are 90.21%, 69.39% and 47.12% respectively.
Key words: Mg(OH)2; thin films; electrodeposition; morphology; transparency
