La(OH)₃ and La₂O₃ nanospindles prepared by template-free direct electrodeposition followed by heat-treatment

详细信息    查看全文

• 作者：Mustafa Aghazadeh ; Behzad Arhami ; Abbas-Ali Malek Barmi ; Mojtaba Hosseinifard ; Davoud Gharailou ; Fatemeh Fathollahi
• 关键词：Nanocrystalline materials ; Electrodeposition ; La(OH)3 ; La2O3 ; Microstructure
• 刊名：Materials Letters
• 出版年：15 January, 2014
• 年：2014
• 卷：115
• 期：Complete
• 页码：68-71
• 全文大小：1033 K

文摘

Base electrogeneration was conducted on the steel cathode from 0.005 M La(NO₃)₃ bath at the conditions of i=2 mA cmp>鈭?p>, T=60 掳C and t=25 min for deposition of lanthanum hydroxide. The prepared hydroxide was then heat-treated at 600 掳C for 3 h in dry air atmosphere. The physicochemical changes of the hydroxide deposit on heating were investigated by DSC-TG analysis. The structural characterizations by XRD, FT-IR and morphological observations via SEM showed that the well-crystallized and spindle-like nanostructures of La(OH)₃ and La₂O₃ have been prepared. This work showed that nanospindles of La(OH)₃ and La₂O₃ are easily achievable by cathodic deposition followed by heat-treatment.