论文部分内容阅读
以 (AgBr) m 团簇作晶种 ,在柠檬酸钠存在条件下 ,(AgBr) m 团簇表面结合的Ag+被光化学还原而获得土红色的液相 (AgBr) 核·(Ag) 壳 纳米粒子 .研究了 (AgBr) 核·(Ag) 壳 纳米粒子的光谱特性 ,在 51 2nm处有最强共振散射峰 ,在41 0nm处产生一个吸收峰 .结果表明 ,(AgBr) 核·(Ag) 壳 纳米粒子的形成是导致51 2nm共振光散射的根本原因 .
(AgBr) m · Ag (Ag) shell nanoparticles were obtained by photochemical reduction of (AgBr) m clusters in the presence of sodium citrate under Ag (AgBr) m cluster surface. (AgBr) core (Ag) shell nanoparticles with the strongest resonance scattering peak at 51 2nm and an absorption peak at 41 0nm.The results show that the (AgBr) core · (Ag) shell Nanoparticle formation is the fundamental reason for the 51 2 nm resonance light scattering.