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首页> 外文期刊>Applied Surface Science >Stalagmite A1(OH)_3 growth on aluminum foil surface by catalytic CO_2 reduction with H_2O
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Stalagmite A1(OH)_3 growth on aluminum foil surface by catalytic CO_2 reduction with H_2O

机译：H_2O催化还原CO_2在铝箔表面生长石笋A1（OH）_3

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CO2 reduction on a catalytic surface is a very attractive research for energy and environments. In the present study, CO2 with H2O was found to be reduced to CO on an aluminum foil surface with evolution of H-2, which resulted in the growth of stalagmite Al(OH)(3) on this surface. The reduction was found to be highly temperature dependent. The crystal growth and the changes in the crystal structure were confirmed by scanning electron microscopy, high resolution transmission electron microscopy, X-ray diffraction crystallography, FT-IR, and Raman spectroscopy. The surface chemical oxidation states were examined by Auger elemental mapping and X-ray photoelectron spectroscopy. The reaction mechanism was proposed to 2Al + CO2 + 5H(2)O - 2Al(OH)(3) + CO + 2H(2). The evolution of CO and H-2 was confirmed by gas-chromatography and gas sensors. These new findings highlight the potential of performing the reduction of CO2 on a metal surface by understanding its surface reactions. (C) 2018 Elsevier B.V. All rights reserved.
机译：催化表面上的二氧化碳还原对于能源和环境而言是一项非常有吸引力的研究。在本研究中，发现铝箔表面的H2O将H2O的CO2还原为CO，并伴随H-2的析出，导致石笋Al（OH）（3）在该表面上的生长。发现该降低高度依赖于温度。晶体生长和晶体结构的变化通过扫描电子显微镜，高分辨率透射电子显微镜，X射线衍射晶体学，FT-IR和拉曼光谱法得到证实。通过俄歇元素映射和X射线光电子能谱检查表面化学氧化态。提出了反应机理为2Al + CO2 + 5H（2）O-> 2Al（OH）（3）+ CO + 2H（2）。气相色谱和气体传感器证实了CO和H-2的逸出。这些新发现凸显了通过了解金属表面反应在金属表面进行二氧化碳还原的潜力。 （C）2018 Elsevier B.V.保留所有权利。

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