钛酸盐纳米结构的水热合成  

Hydrothermal Synthesis of Titanate Nanostructures

作　　者：董正洪[1] 赵永男[1] 苏皓[1] 余建国[1] 

机构地区：[1]天津工业大学材化学院天津市改性与功能纤维重点实验室,天津300160

出　　处：《过程工程学报》2009年第S2期27-30,共4页The Chinese Journal of Process Engineering

基　　金：天津市自然科学基金资助项目(编号:05YFJMJC13500);天津市高等学校科技发展基金资助项目(编号:2006ba47)

摘　　要：以二氧化钛粉末为原料,在水热条件下,通过调变反应温度和体系的碱度,合成出了钛酸钠纳米线阵列、纳米管花等多种复杂纳米结构.高碱度所得纳米线阵列,纳米线长度为200μm,直径20~90nm,阵列面积可达2cm×2cm.低碱度下得到的纳米管花由外径14nm、内径3nm的纳米管构成,其比表面积为127.15m2/g.不同结构纳米结构的形成是由反应温度和体系碱度变化所导致的生长速率的变化所致.Sodium titanate nanowire arrays and nanotube flowers were prepared from titania powder under hydrothermal conditions by adjusting the reaction temperature and base concentration.The products from highly concentrated basic solutions were nanowire arrays with 200 μm in length and 20~90 nm in diameter.Aligned areas were up to 2 cm×2 cm.Nanotube flowers obtained from thinner basic solution were constructed by nanotubes of 14 nm in outer size and 3 nm in inner size.Their BET specific surface area was 127.15 m2/g.The formation of various nanostructures was proposed to derive from the change of growth speed caused by varying the reaction temperature and base concentration.

关 键 词：钛酸盐 水热合成 纳米结构 

分 类 号：TB383.1[一般工业技术—材料科学与工程]