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以KF和Al(NO3)3.9H2O为反应物,采用乙二醇回流法合成了纳米复合氟化物KAlF4,考测了反应物的选择、配比、反应时间等因素对产物的影响,并利用XRD、TEM、XPS等技术对其结构、形貌、粒径以及表面氧含量进行了表征。结果表明,采用回流法在适当的反应条件下合成的KAlF4具有单一相结构的复合氟化物,平均粒径为32.5 nm,属于纳米颗粒,合成的产物不含晶格氧,仅有吸附氧且含量较低。该方法具有工艺简单、反应时间短、不腐蚀设备、不需要煅烧直接生成晶相等优点,具有广阔的开发应用前景。
Using KF and Al (NO3) 3.9H2O as reactants, the nanocomposite fluoride KAlF4 was synthesized by ethylene glycol reflux method. The effects of the reactants’ selection, compounding ratio and reaction time on the product were investigated. , TEM, XPS and other techniques for its structure, morphology, particle size and surface oxygen content were characterized. The results showed that the composite fluoride with a single phase was synthesized by reflux method under the appropriate reaction conditions. The average particle size was 32.5 nm, belonging to the nano-particles. The synthesized product did not contain lattice oxygen, only the adsorbed oxygen content Lower. The method has the advantages of simple process, short reaction time, no corrosion of equipment, no need of direct calcination to produce crystalline phases and the like, and has broad development and application prospects.