Effect of Residual Silver on Surface-Enhanced Raman Scattering of Dealloyed Nanoporous Gold
Effect of Residual Silver on Surface-Enhanced Raman Scattering of Dealloyed Nanoporous Gold
复制标题
DOI：
10.1021/jp205892n
复制
发表时间：
2011-10-13
影响因子：
3.7
通讯作者：
Chen, Mingwei
中科院分区：
文献类型：
--
作者：
Zhang, Ling;Chen, Luyang;Chen, Mingwei
通过可控脱合金和随后的表面增强拉曼散射（SEAS）退火，合成了含有不同残留量银的纳米多孔金膜。研究发现，残余银对脱合金纳米多孔金的Sers效应起着重要的作用。当纳米孔尺寸几乎相同时，更多的残留Ag产生更好的Sers效果。此外，通过退火均匀化残余银可以进一步提高纳米多孔Au-Ag合金的Sers增强。
Nanoporous gold films containing various amounts of residual silver have been synthesized by controllable dealloying and subsequent annealing for surface-enhanced Raman scattering (SEAS). It was found that the residual Ag plays an important role in the SERS effect of dealloyed nanoporous gold. More residual Ag gives rise to better SERS effects when nanopore sizes are nearly identical. Moreover, homogenization of the residual silver by annealing can further improve the SERS enhancement of nanoporous Au-Ag alloys.