纳米银胶的光化学制备及其共振散射光谱研究

The Preparation of Nanometer Silver Colloid by Photochemical Method and Its Resonance Scattering Spectroscopic Study

采用紫外光化学法制备了银胶 ,它的最强共振散射峰在 470nm处 ,最大吸收峰为 412 2nm。在共振散射波长 470nm处 ,银浓度在 0 45 6～ 9 12 μg·mL-1范围内与所得银胶的共振散射光强度呈良好线性关系。首次采用光化学法合成了稳定的蓝色银胶 ,其最强共振散射峰位于 470nm ,在 397 4和 6 2 3 4nm处有两个较强的吸收峰。

The maximum resonance scattering peak of the sil ver colloids prepared by ultraviolet-photochemical method is at 470 nm and the maximum absorption peak is at 412 2 nm.The intensity of resonance scattering li ght is linear to the silver concentration in the range of 0 456—9 12 μg·m L- -1.It is the first time that the blue silver colloid was prepared phot ochemically.Its maximum resonance scattering peak is at 470 nm.It has two absorp tion peaks at 397 4 and 623 4 nm.