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Identification of Al-13 on the Colloid Surface Using Surface-Enhanced Raman Spectroscopy
Li, Ning; Hu, Chengzhi; Fu, Xiaoning; Xu, Xiufang; Liu, Rui; Liu, Huijuan; Qu, Jiuhui
2017-03-07
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
Volume51Issue:5Pages:2899-2906
AbstractAl-13 is the most active polymeric Al species responsible for coagulation at the solid-liquid interface, whereas the detection techniques for Al-13 at the interface are currently limited. In this study, for the first time, the identification of Al-13 on the silicon dioxide-based colloid surface was realized by using surface-enhanced Raman scattering (SERS), which is an ideal surface method sensitive for single-molecule detection. The high purity Al-13 salts were prepared by an electrolysis procedure followed by precipitation or metathesis. Al-13-Cl-n was determined to be feasible for the Raman detection as it exhibited more noticeable signals in comparison to Al-13-(SO4)(p) and Al-13-(NO3)(m). The peak of Al-13-Cl-n at 635 cm(-1) could be the major characteristic peak of Al-13, and the other two peaks at 300 and 987 cm(-1) could be accessorial evidence for the identification. Further, the identification of Al-13 adsorbed on the surface of Ag and gold-core/silica-shell colloids was confirmed by the SERS response at the above three wavenumbers with a higher signal-to-noise ratio than the normal Raman scattering. According to the least-squares fitting computed Raman spectra, each of the characteristic peaks was associated with specific vibrational modes.
Department环境水质学国家重点实验室
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/39514
Collection环境水质学国家重点实验室
Recommended Citation
GB/T 7714
Li, Ning,Hu, Chengzhi,Fu, Xiaoning,et al. Identification of Al-13 on the Colloid Surface Using Surface-Enhanced Raman Spectroscopy[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2017,51(5):2899-2906.
APA Li, Ning.,Hu, Chengzhi.,Fu, Xiaoning.,Xu, Xiufang.,Liu, Rui.,...&Qu, Jiuhui.(2017).Identification of Al-13 on the Colloid Surface Using Surface-Enhanced Raman Spectroscopy.ENVIRONMENTAL SCIENCE & TECHNOLOGY,51(5),2899-2906.
MLA Li, Ning,et al."Identification of Al-13 on the Colloid Surface Using Surface-Enhanced Raman Spectroscopy".ENVIRONMENTAL SCIENCE & TECHNOLOGY 51.5(2017):2899-2906.
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