盐诱导金纳米颗粒聚集的表面增强拉曼光谱表征
Surface-Enhanced Raman Spectroscopy Characterization of Salt-Induced Aggregation of Gold Nanoparticles.
作者信息
Chan Matthew Y, Leng Weinan, Vikesland Peter J
机构信息
The Charles E. Via, Jr, Department of Civil and Environmental Engineering, Virginia Tech, 415 Durham Hall (MC 0246), 1145 Perry St., Blacksburg, VA, 24061, USA.
Institute for Critical Technology and Applied Science, Virginia Tech, 227 Kelly Hall (MC 0193), 325 Stanger St., Blacksburg, VA, 24061, USA.
出版信息
Chemphyschem. 2018 Jan 5;19(1):24-28. doi: 10.1002/cphc.201700798. Epub 2017 Dec 11.
Low-frequency (<300 cm ) vibrational interactions between gold surfaces and dissolved halides in water were investigated by surface-enhanced Raman spectroscopy (SERS). Experiments with NaF, NaCl, NaBr, and NaI salts indicate that the Raman shifts of the Au-X SERS bands correlate with the bond strength of the corresponding covalent interaction. These low-frequency SERS bands open up new means to investigate the aggregation of nanoparticles in aqueous environments.
通过表面增强拉曼光谱（SERS）研究了金表面与水中溶解卤化物之间的低频（<300 cm ）振动相互作用。使用NaF、NaCl、NaBr和NaI盐进行的实验表明，Au-X SERS谱带的拉曼位移与相应共价相互作用的键强相关。这些低频SERS谱带为研究水性环境中纳米颗粒的聚集提供了新方法。
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