【摘要】 对一种具有较强表面增强拉曼散射效应的纳米银 ,进行了透射式电镜、吸收谱及稳定性测定 ,发现按同一方法在不同时间制备的胶态纳米银粒度分布均匀 ,粒径均为 5nm ,吸收谱除在 43 0nm处有一吸收峰外 ,在 2 1 0nm处还有一尖锐的吸收峰 ,室温下放置 7个月后仍具有较强的SERS活性。更多还原

【Abstract】 A new nano-silver particle with very strong surface enhance Raman scattering has been investigated by means of TEM, absorption spectrum and SERS It was found that the nano-silver particles, which were prepared at different times, has the same particle semi diameter 5nm A new type of nano-silver particle has two maximum absorption peaks at 430 and 210nm It is stable at room temperature for seven months and has strong SERS spectra更多还原