期刊
SURFACE AND INTERFACE ANALYSIS
卷 40, 期 2, 页码 81-84出版社
WILEY
DOI: 10.1002/sia.2742
关键词
silver nanoparticles on Si; facile fabrication; SEIRAS and SERS; surface analysis; paranitrobenzoic acid; ion (III) protoporphyrin
A facile and economic method to fabricate and immobilize silver nanoparticles on a thin Si wafer (AgNP/Si) is reported for an analytical template in ambient environment by surface-enhanced infrared/Raman spectroscopy. The protocol involves immersion of the Si wafer in a solution containing silver nitrate and hydrofluoric acid. To screen appropriate conditions for preparing AgNP/Si for SEIRAS application, different combinations of AgNO3 and HF solutions were examined with paranitrobenzoic acid (PNBA) used as the probe molecule in transmission measurements. These SEIRA-active substrates were also promising for SERS application, as demonstrated with high quality SERS spectra of iron (III) protoporphyrin adlayer on AgNP/Si with a red excitation line. The AgNP/Si substrates prepared under different conditions were examined by SEM for qualitative correlation of enhancements with morphologies. Copyright (c) 2008 John Wiley & Sons, Ltd.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据