以氯化铝、氢氧化钠为原料,在反应溶液的pH值为5、反应温度为200 ℃的条件下用液相法制备薄姆石(γ-AlOOH)纳米棒;对其在不同温度下的煅烧产物及在加热过程的热分解过程进行了分析.结果表明:试验条件下能制备出直径10~30 nm、长度100~300 nm的γ-AlOOH纳米棒;该纳米棒在500~1 200 ℃下煅烧后转变为γ-Al2O3仍保持纳米棒的形貌;在1 250 ℃下煅烧后转变产物为α-Al2O3;在1 300 ℃下煅烧后转变产物为α-Al2O3,纳米棒相互烧结形成团聚体;γ-AlOOH纳米棒的热分解过程分为物理吸附水的脱出、化学吸附水的脱出、结构水脱出并转变为氧化铝中间相、氧化铝中间相中残留羟基的脱出四个阶段.
所属栏目
纳米材料上海市重点学科建设资助项目(J51402)
收稿日期
2009/4/102009/10/10
作者单位
杨琪:上海工程技术大学材料工程学院, 上海 201620
胡文彬:上海交通大学金属基复合材料国家重点实验室, 上海 200240
备注
杨琪(1969-),男,湖南衡阳人,讲师,博士.
引用该论文:
YANG Qi,HU Wen-bin.Preparation and Thermal Decomposition of γ-AlOOH Nanorods[J].Materials for mechancial engineering,2010,34(5):68～71
杨琪,胡文彬.γ-AlOOH纳米棒的制备及其热分解[J].机械工程材料,2010,34(5):68～71
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