纳米线
奥斯特瓦尔德成熟
锐钛矿
材料科学
热液循环
氢氧化钠
二氧化钛
乙二醇
化学工程
退火(玻璃)
钛
碱度
水热合成
钛酸酯
纳米技术
冶金
化学
陶瓷
催化作用
有机化学
光催化
工程类
作者
Hao Yin,Guqiao Ding,Bof Gao,Fuqiang Huang,Xiaoming Xie,Mianheng Jiang
标识
DOI:10.1016/j.materresbull.2012.08.022
摘要
Ultrafine titanium dioxide nanowires of diameter ranging from 10 to 30 nm were successfully synthesized using a hydrothermal method. At first sodium titanate nanowires were prepared in a low-concentration sodium hydroxide solution with the assistance of ethylene glycol (EG). They were then converted to anatase titanium dioxide nanowires through acid washing and post-annealing. We conclude that EG increases the local alkalinity and the viscosity of the solution, therefore facilitating the growth of ultrafine nanowire. We propose that the synergy of oriented attachment (OA) and Ostwald ripening (OR) mechanisms are responsible for the growth of the nanowire.
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