13C CPMAS NMR spectroscopy as a versatile and quantitative tool for determination of mercury adsorption capacity in thiol-functionalized mesoporous Silica SBA-1

Hsien Ming Kao, Lung Ping Lee, Arudra Palani

研究成果: 雜誌貢獻期刊論文同行評審

19 引文 斯高帕斯(Scopus)

摘要

13C cross-polarization magic angle spinning (CPMAS) NMR spectroscopy is demonstrated to be a valuable characterization tool for quantitative measurements of Hg2+ adsorption capacity in thiol-functionalized mesoporous silica SBA-1 (Santa Barbara Amorphous-1). This is the first report on the investigation of the spectral change in the 13C CP signals for mercaptopropyl-functionalized mesoporous materials doped with different Hg2+ concentrations. The chemical shift of the carbon atom adjacent to the thiol group is sensitive to the binding of the mercury ion, and its peak intensity can be used as a quantitative sensor for the amount of the mercury ion adsorbed. The 13C CPMAS NMR results are in good agreement with inductively coupled plasma-atomic emission spectroscopy (ICP-AES) analysis.

原文???core.languages.en_GB???
頁(從 - 到)3016-3019
頁數4
期刊Analytical Chemistry
80
發行號8
DOIs
出版狀態已出版 - 15 4月 2008

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