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首页> 外文期刊>Advanced Functional Materials >Investigating Local Structure in Layered Double Hydroxides with ~(17)O NMR Spectroscopy
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Investigating Local Structure in Layered Double Hydroxides with ~(17)O NMR Spectroscopy

机译：用〜（17）O NMR光谱研究层状双氢氧化物中的局部结构

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摘要

A new method based on the "memory effect" for efficient and economical ~(17)O labeling of layered double hydroxides (LDHs) is introduced. High-quality ~(17)O solid-state NMR spectra are obtained, for the first time, for LDHs prepared with only several hundred microliters of ~(17)O-enriched H_2O. The ~(17)O resonances due to the different oxygen ions in the structure of LDHs can be resolved with better resolution than the results obtained from ~1H ultrafast magic angle spinning (MAS) NMR spectroscopy. The results show clear evidence for Al-O-Al avoidance. Since only intermediate MAS speeds and fields are used, this new approach can be incorporated easily with a variety of dipolar recoupling schemes to explore the key interactions and applications of LDHs.
机译：介绍了一种基于“记忆效应”的高效，经济的分层双氢氧化物（LDHs）〜（17）O标记的新方法。首次获得了仅用几百微升富含〜（17）O的H_2O制备的LDH的高质量〜（17）O固态NMR光谱。与从〜1H超快幻角旋转（MAS）NMR光谱学获得的结果相比，可以更高分辨率地解决由于LDHs结构中不同氧离子导致的〜（17）O共振。结果显示了避免Al-O-Al的明确证据。由于仅使用中间的MAS速度和磁场，因此可以轻松地将此新方法与各种偶极耦合方案结合使用，以探索LDH的关键相互作用和应用。

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  • 来源
    《Advanced Functional Materials》 |2014年第12期|1696-1702|共7页
  • 作者

    Li Zhao; Zhe Qi; Frederic Blanc; Guiyun Yu; Meng Wang; Nianhua Xue; Xiaokang Ke; Xuefeng Guo; Weiping Ding; Clare P. Grey; Lurning Peng;

  • 作者单位

    School of Chemistry and Chemical Engineering Nanjing University, 22 Hankou Road Nanjing, 210093, China;

    School of Chemistry and Chemical Engineering Nanjing University, 22 Hankou Road Nanjing, 210093, China;

    Department of Chemistry University of Cambridge, Lensfield Road Cambridge, CB2 1EW, UK;

    School of Chemistry and Chemical Engineering Nanjing University, 22 Hankou Road Nanjing, 210093, China;

    School of Chemistry and Chemical Engineering Nanjing University, 22 Hankou Road Nanjing, 210093, China;

    School of Chemistry and Chemical Engineering Nanjing University, 22 Hankou Road Nanjing, 210093, China;

    School of Chemistry and Chemical Engineering Nanjing University, 22 Hankou Road Nanjing, 210093, China;

    School of Chemistry and Chemical Engineering Nanjing University, 22 Hankou Road Nanjing, 210093, China;

    School of Chemistry and Chemical Engineering Nanjing University, 22 Hankou Road Nanjing, 210093, China;

    Department of Chemistry University of Cambridge, Lensfield Road Cambridge, CB2 1EW, UK;

    School of Chemistry and Chemical Engineering Nanjing University, 22 Hankou Road Nanjing, 210093, China;

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