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爆轰法制备纳米TiO2及其参数控制

DOI: 10.11858/gywlxb.2006.02.002, PP. 122-126

Keywords: 爆轰,纳米TiO2,晶粒尺寸,晶型转变

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Abstract:

采用偏钛酸与炸药混合进行爆轰合成,制备出晶粒尺寸在10nm到60nm之间的纳米TiO2粉末。结合XRD、TEM、BET等表征手段,研究了纳米TiO2的制备参数与其晶粒尺寸和晶相结构之间的关系。发现当炸药含量增加时,产物晶粒尺寸增大,同时晶相结构随炸药量的增加逐渐由低温的锐钛矿型和板钛矿型向高温的金红石型转变,爆轰温度在这种转变过程中起着极为重要的作用。

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