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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Electron- and Thermal-Stimulated Synthesis of Water on Boehmite (gamma-AlOOH) Nanoplates
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Electron- and Thermal-Stimulated Synthesis of Water on Boehmite (gamma-AlOOH) Nanoplates

机译：电子和热刺激的勃姆石（γ-alooh）纳米水合物的合成

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摘要

Utilizing a combination of electron-stimulated desorption, infrared spectroscopy, and temperature program desorption measurements, we show that molecular water is synthesized during electron irradiation on boehmite nanoplates and postulate that the reaction proceeds first through decomposition of the hydroxyl to produce trapped hydrogen atoms. Once released, these hydrogen atoms can react with a neighboring hydroxyl resulting in adsorbed water. In addition, molecular water is readily formed on the surface of the boehmite nanosheets through thermal-induced recombinative desorption. Peak water production via recombinative desorption occurs at 750 K in agreement with previous studies. We have also identified a weak desorption feature near 400 K, which is likely strongly adsorbed water. The derived experimental desorption activation energy of water assuming full coverage is 98.6 kJ mol(-1).
机译：利用电子刺激的解吸，红外光谱学和温度计划解吸测量的组合，我们表明在勃姆石纳米板上的电子照射期间合成分子水，并将反应首先通过分解羟基来产生被困氢原子。 一旦释放，这些氢原子可以与导致吸附水的相邻羟基反应。 此外，通过热诱导的重组解吸容易地在勃姆石纳次片表面上形成分子水。 通过重组解吸的峰水产量在750 k与以前的研究方面发生在750 k。 我们还确定了400 k附近的弱解吸特征，这可能是强烈吸附的水。 假设完全覆盖的水的衍生实验解吸激活能量为98.6 kJ摩尔（-1）。

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