CAJ | 학술논문

纳米银在超导材料、微电子、医药以及催化等领域具有广泛应用，其粒径差异对性能表现具有重要影响。采用液相还原法，针对具有广泛应用的15～86 nm 不同粒径纳米银进行了实验设计和制备实现，并对样品的形貌、粒径和晶体结构进行了分析与表征，讨论了不同实验条件对纳米银粒径的影响规律。结果表明，通过控制实验条件可以制备出不同平均粒径的纳米银；制备出的纳米银为立方晶系球形颗粒；纳米银的粒径随反应温度、反应物硝酸银的浓度、反应物加料次数的增加而增大；分散剂的类型及其用量对纳米银的粒径也有影响，添加阴离子表面活性剂有利于制备小粒径的纳米银，而添加阳离子表面活性剂有利于制备大粒径的纳米银，并且分散剂用量增加，粒径减小。
납미은재초도재료、미전자、의약이급최화등영역구유엄범응용，기립경차이대성능표현구유중요영향。채용액상환원법，침대구유엄범응용적15～86 nm 불동립경납미은진행료실험설계화제비실현，병대양품적형모、립경화정체결구진행료분석여표정，토론료불동실험조건대납미은립경적영향규률。결과표명，통과공제실험조건가이제비출불동평균립경적납미은；제비출적납미은위립방정계구형과립；납미은적립경수반응온도、반응물초산은적농도、반응물가료차수적증가이증대；분산제적류형급기용량대납미은적립경야유영향，첨가음리자표면활성제유리우제비소립경적납미은，이첨가양리자표면활성제유리우제비대립경적납미은，병차분산제용량증가，립경감소。
The different particle size nano‐Ag can be applied in various fields .Nano‐Ag parti‐cles with average diameters of 15~86 nm were prepared by liquid‐phase reduction method .The morphology and crystal structure of nano‐Ag samples were analyzed ,the effects of the experimen‐tal conditions on particle size of nano‐Ag samples were discussed . The results show that the nano‐Ag with different average particle size can be prepared by changing experiment conditions . The structure of nano‐Ag is cubic and the shape is approximately spherical .The particle size of nano‐Ag increases with increasing concentration of reactant silver nitrate ,reaction temperature and the time of charging the reactant .Type and dosage of surfactants have influence on particle size ,the addition of anionic surfactant is conducive to formation of smaller particle .On contrary , cationic surfactant tends to form bigger particle .In addition ,the more the dispersantis added ,the smaller the particle size is .The conclusions have some guiding significance for the practical appli‐cation of silver nanoparticles .