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.
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