绿色银纳米粒子的共振散射光谱研究

以柠檬酸钠作光还原剂，采用紫外光-可见光二步光化学法制备了绿色银纳米离子，在399.4nm和691.5nm处有二个紫外-可见吸收峰；在340nm，470nm和520nm处有三个共振散射峰，从超分子和纳米粒子这一整体出发，探讨了共振散射光谱产生的原因及银超分子光反应机理。

Study on the resonance scattering spectra of green silver nanoparticles

The green nanoparticles of silver in solution were prepared by a two step photochemical procedure, combining ultraviolet light and visible light irridiation, in the presence of the photoreducer, sodium citrate. There are three resonance scattering peaks at 340 nm, 470 nm and 520 nm and two absorption peaks at 399.4 nm and 691.5 nm for the green silver nanoparticles. Based on the facts of the formation of supramolecule in the substable state, the mechanisms for the resonance scattering light and the supramolecular reaction are proposed.