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采用水热合成法成功制备纤蛇纹石纳米管,并通过改变前躯体MgO和活性纳米SiO_2的培烧温度及反应时间等因素得到材料制备的最佳条件,利用XRD、TEM等手段对合成样品进行表征。结果表明:前躯体MgO的焙烧温度、SiO_2的焙烧温度及二者的反应时间等都能影响纤蛇纹石纳米管的合成。在本实验条件下,600℃焙烧得到的MgO和500℃焙烧得到的活性纳米SiO_2在反应时间为48h时合成的纤蛇纹石纳米管结晶完美,分散性好,轮廓清晰、完整,管长200—800nm,最长可达1000nm以上。
Hydrothermal synthesis of chitrite nanotubes was successfully prepared by changing the precursor MgO and activated nano-SiO 2 calcination temperature and reaction time and other factors to obtain the best preparation conditions, the use of XRD, TEM and other means of synthetic samples Characterization. The results show that the calcination temperature of MgO, the calcination temperature of SiO 2 and the reaction time of MgO can affect the synthesis of chrysotile nanotube. Under the experimental conditions, the synthesized chitosan nanotubes synthesized by calcination at 600 ℃ and active nano-SiO 2 calcined at 500 ℃ have perfect crystallization, dispersibility, clear outline and complete tube length of 200 -800nm, up to more than 1000nm.