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贵金属纳米颗粒-玻璃复合材料是一种重要的非线性材料.利用光致发光谱及配位场理论,深入研究了离子交换及氢气热处理对硅酸盐玻璃中贵金属离子的引入、还原、成核及生长过程的影响,发现延长离子交换时间有利于提高玻璃中金属离子的浓度.对于掺Ag+硅酸盐玻璃,不仅存在孤立Ag+离子,同时也存在Ag2+团簇.H2中热处理后,样品中孤立Ag+离子浓度迅速降低,同时出现Ag32+团簇.对于掺Cu+硅酸盐玻璃,仅存在孤立CU+和Cu2+,没有发现Cu+团簇的发光峰,Cu2+的存在造成Cu+的发光强度显著降低.掺Ag+硅酸盐玻璃经H2热处理后,再经过第二次离子交换往玻璃中掺Cu+是十分困难的.

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