纳米孔洞非晶氧化铝模板的制备  

PREPARATION OF AMORPHOUS Al_2O_3 TEMPLATE

作　　者：杨绍光[1] 朱浩[1] 洪建明[2] 金志强[1] 唐少龙[1] 张世远[1] 都有为[1] 

机构地区：[1]南京大学物理系固体微结构国家重点实验室,江苏南京210093 [2]南京大学现代分析中心,江苏南京210093

出　　处：《南京大学学报（自然科学版）》2000年第4期431-433,共3页Journal of Nanjing University（Natural Science）

基　　金：国家重点项目!"纳米材料和纳米结构"(G19990 6 45 0 8) ;江苏省重点项目!"纳米有序阵列磁性材料的研究"(BK992 0 7)

摘　　要：使用 99.5%的铝片 ,利用电化学阳极氧化手段制备了纳米孔洞氧化铝模板 .通过控制腐蚀时间 ,可以调节模板的孔径大小 .利用X射线衍射 (XRD)和透射电子显微镜 (TEM )等测试手段进行了模板的表征 .在较简单的条件下制备孔径均匀可调的纳米孔洞非晶氧化铝模板 .Porous alumina membranes with different pore diameters are prepared electrochemically. In the experiments, aluminum foil ( 99.5% purity) is used as the starting material. After annealed at 500?℃ for 5 hours in the air, the aluminum foil is chemically polished in 1?M NaOH solution for 10?min. The membrane is carried out at a constant voltage in 0.3?mol/L sulphuric acid (H 2SO 4) for 4?hours. A mixture of ice and water provide a surrounding condition of 0?℃. The remaining aluminum is removed in a saturated HgCl solution. 5?wt% phosphoric acid is used in the etching treatment step to get different pore diameters by changing etching time at 30?℃. TEM images show that the diameter distribution of the pores is very narrow, and the pores are locally ordered. The pore diameter can be adjusted by changing the etching treatment time in a phosphoric acid solution. XRD illustrates that the porous membrane is in the amorphous state.

关 键 词：介孔模板 阳极氧化 氧化铝模板 电化学 

分 类 号：O646[理学—物理化学]