(中南大學(xué) 冶金科學(xué)與工程學(xué)院，長(zhǎng)沙 410083)
摘 要: 以SnO2導(dǎo)電玻璃為陰極，使用循環(huán)伏安法及計(jì)時(shí)電流法研究0.1 mol/L硝酸鎂水溶液體系中氫氧化鎂的電沉積過(guò)程，并對(duì)恒電勢(shì)沉積法制備的多孔Mg(OH)2薄膜的形貌、物相及光學(xué)性質(zhì)進(jìn)行表征。結(jié)果表明：所得Mg(OH)2薄膜呈很明顯的(011)面擇優(yōu)取向；隨著沉積電勢(shì)或初始pH值的增加，Mg(OH)2二次成核的數(shù)量增加；在沉積時(shí)間固定為10 min的情況下，沉積電勢(shì)為-1.2、-1.3和-1.4 V的薄膜在可見(jiàn)光范圍內(nèi)(390~780 nm)的平均透過(guò)率依次為90.21%、69.39%和47.12%。
關(guān)鍵字: 氫氧化鎂；薄膜；電沉積；形貌；透過(guò)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
