邻苯二甲酸和酞嗪对干法制备银纳米粒子形貌的影响  

Effects of Phthalic Acid and Phthalazine on the Morphology of Silver Nanoparticles Formed by Dry-processed Thermal Reduction of Silver Stearate

作　　者：张占江[1] 李金培[2] 

机构地区：[1]国家知识产权局专利局专利审查协作北京中心,北京100083 [2]中国科学院理化技术研究所,北京100190

出　　处：《影像科学与光化学》2013年第4期257-267,共11页Imaging Science and Photochemistry

基　　金：国家自然科学基金(20873168)

摘　　要：以硬脂酸银为前驱体,采用干式热还原方法制备银纳米粒子,并研究了邻苯二甲酸(Phthalic acid,H2PA)和酞嗪(Phthalazine,PHZ)对银粒子形貌的影响.结果表明:H2PA在直接热显影(Thermograhic,TG)模拟体系及光敏热成像(Photothermographic,PTG)体系中均促进颗粒状银纳米粒子的形成,而PHZ在TG模拟体系及PTG体系中分别促进颗粒状银粒子及丝状银的形成.调色剂的添加顺序对显影银形貌有很大影响.调色剂组合及光敏催化剂的协同作用是PTG体系中产生"树枝状"银的关键因素,探讨了不同形貌银纳米粒子的形成机理.The effect of phthalic acid and phthalazine on the morphology of silver particles formed by dry-processed thermal reduction of silver stearate was investigated. Experimental results show that phthalic acid resulted in the formation of spherical silver both in TG model system and in PTG system. Phthalazine facilitated the formation of spherical silver and filamentary silver in TG model system and PTG system, respectively. The sequence of the addition of toners had an important effect on silver morphology. The synergetic effect of toner pair and photosensitive catalyst led to the formation of dendritic silver in PTG system. The possible mechanism for the formation of silver nanoparticles was proposed.

关 键 词：银纳米粒子 光敏热成像 邻苯二甲酸 酞嗪 

分 类 号：TQ572[化学工程—精细化工]