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材料工程  2008 

PVP在水相金纳米粒子表面吸附过程的研究

, PP. 353-355

Keywords: 聚乙烯吡咯烷酮(PVP),金纳米粒子,紫外可见光谱,吸附

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Abstract:

运用紫外可见吸收光谱,在水相金溶胶体系中研究了聚乙烯吡咯烷酮(PVP)在金纳米粒子表面的吸附。实验结果表明PVP吸附在金纳米粒子的表面,使金纳米粒子的特征吸收峰的峰位红移15nm左右且强度下降。根据金溶胶中PVP加入量和特征吸收峰的变化,提出了PVP对溶胶中金纳米粒子的表面包裹经过的过程。

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