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利用离子交换结合热处理方法,制备出Ag纳米颗粒掺杂硅酸盐玻璃复合材料。通过改进的Mie理论拟合了不同制备条件下Ag纳米颗粒的吸收光谱,得到了它们的尺寸和体积分数。拟合结果表明:在热处理条件相同时,离子交换时间越长,样品中Ag纳米颗粒的尺寸越大,体积分数越高;在离子交换条件相同时,随着后续热处理时间的延长或温度升高,样品中Ag纳米颗粒的尺寸变大,体积分数提高。相比于空气热处理,氢气热处理可以显著降低样品中Ag纳米颗粒的形成温度和时间。氢气气氛下形成的Ag纳米颗粒小于空气气氛下形成的Ag纳米颗粒,导致其等离子体共振吸收峰相对空气中热处理的样品发生蓝移。
Ag nanoparticle doped silicate glass composite was prepared by ion exchange combined with heat treatment. The absorption spectra of Ag nanoparticles under different preparation conditions were fitted by the improved Mie theory, and their size and volume fraction were obtained. The fitting results show that when the heat treatment conditions are the same, the longer the ion exchange time is, the larger the size of the Ag nanoparticles in the sample is and the higher the volume fraction is. When the ion exchange conditions are the same, with the prolongation of the heat treatment time or the temperature increase , The size of Ag nanoparticles in the sample becomes larger and the volume fraction increases. Hydrogen heat treatment can significantly reduce the formation temperature and time of Ag nanoparticles in the sample compared to air heat treatment. The formation of Ag nanoparticles in the hydrogen atmosphere is smaller than that of the Ag nanoparticles formed in the air atmosphere, resulting in a blue shift of the plasma resonance absorption peak relative to the heat-treated sample in air.