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科学通报  2011 

Au/SiO2纳米复合材料的消光性质

DOI: 10.1360/972010-1956, PP. 728-734

Keywords: 有序介孔薄膜,金纳米粒子,消光谱,MG理论

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Abstract:

利用共溶胶蒸发诱导自组装方式制备有序介孔SiO2薄膜组装Au纳米粒子,合成了三种Au/SiO2纳米复合材料.光谱分析表明,介孔结构将影响复合材料消光特性;改变浸渍时间,Au纳米粒子体积增大并导致复合材料消光谱红移增强.基于Maxwell-Garnett(MG)理论,利用简化模型对复合材料的消光特性进行了分析,定性说明了复合材料消光特性存在差异的原因.在材料制备过程中,通过选用不同表面活性剂或者控制浸渍反应时间,能对Au/SiO2纳米复合材料的消光性质进行调控.

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