Synthesis of Alumina Nanowires by Etching Porous Alumina Film |
کد مقاله : 2184-IMES-CONGR |
نویسندگان: |
محسن صادقپور مطلق *1، کاوه مختاری زنوزی2، حسین آقاجانی2، مهدی قاسمی کاکرودی2 1البرز- کرج - حسین آباد راه آهن- کوچه شهید عباس بی غم- پلاک 23 2دانشگاه تبریز |
چکیده مقاله: |
Nowadays there is a considerable use of alumina nanowires in catalysts and electrochemical processes. Chemically etched alumina anodic film can be used to produce nanowires. Therefore in this study two-step alumina anodizing in acid oxalic solution was used to produce alumina film. Then alumina film was etched in dilute solution of sodium hydroxide (NaOH) for production of dense and aligned alumina nano-wires. This led to break of alumina walls and production of alumina nanowires. Nanowires formed in different concentration of sodium hydroxide solution and etching time were investigated by scanning electron microscopy. The results show that the most appropriate alumina nanowires will be formed after 150 seconds etching in solution concentration of 0.5 moles/lit in this case, that the nanowires diameter and length are 25nm and 15μm respectively. |
کلیدواژه ها: |
“anodizing”, “anodic alumina films”, “nanotubes”, “nanowires”, “alumina” |
وضعیت : مقاله برای ارائه به صورت پوستر پذیرفته شده است |