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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >High-pressure photodissociation of water as a tool for hydrogen synthesis and fundamental chemistry
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High-pressure photodissociation of water as a tool for hydrogen synthesis and fundamental chemistry

机译：水的高压光解离作为氢合成和基础化学的工具

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摘要

High-pressure methods have been demonstrated to be efficient in providing new routes for the synthesis of materials of technological interest. In several molecular compounds, the drastic pressure conditions required for spontaneous transformations have been lowered to the kilobar range by photoactivation of the reactions. At these pressures, the syntheses are accessible to large-volume applications and are of interest to bioscience, space, and environmental chemistry. Here, we show that the short-lived hydroxyl radicals, produced in the photodissociation of water molecules by near-UV radiation at room temperature and pressures of a few tenths of a gigapascal (GPa), can be successfully used to trigger chemical reactions in mixtures of water with carbon monoxide or nitrogen. The detection of molecular hydrogen among the reaction products is of particular relevance. Besides the implications in fundamental chemistry, the mild pressure and irradiation conditions, the efficiency of the process, and the nature of the reactant and product molecules suggest applications in synthesis.
机译：高压方法已被证明有效地为合成具有技术意义的材料提供了新的途径。在几种分子化合物中，自发转化所需的剧烈压力条件已通过反应的光活化作用降低至千巴范围。在这些压力下，合成物可用于大量应用，并且对生物科学，空间和环境化学感兴趣。在这里，我们表明在室温和十分之几吉帕斯卡（GPa）的压力下，近紫外辐射在水分子的光解中产生的短寿命羟基自由基可成功用于引发混合物中的化学反应一氧化碳或氮的水。在反应产物中分子氢的检测特别重要。除了对基本化学的影响外，温和的压力和辐照条件，工艺效率以及反应物和产物分子的性质还建议在合成中应用。

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  • 作者

    Matteo Ceppatelli; Roberto Bini; Vincenzo Schettino;

  • 作者单位

    European Laboratory for Non-Linear Spectroscopy, Via N. Carrara 1, 1-50019 Sesto Fiorentino, Florence, Italy Dipartimento di Chimica, Universita di Firenze, Via della Lastruccia 3, 1-50019 Sesto Fiorentino, Florence, Italy;

    European Laboratory for Non-Linear Spectroscopy, Via N. Carrara 1, 1-50019 Sesto Fiorentino, Florence, Italy Dipartimento di Chimica, Universita di Firenze, Via della Lastruccia 3, 1-50019 Sesto Fiorentino, Florence, Italy;

    European Laboratory for Non-Linear Spectroscopy, Via N. Carrara 1, 1-50019 Sesto Fiorentino, Florence, Italy Dipartimento di Chimica, Universita di Firenze, Via della Lastruccia 3, 1-50019 Sesto Fiorentino, Florence, Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    high-pressure chemistry; photocatalysis;

    机译：高压化学光催化;

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