DRIFTS study of CO adsorption on Pt nanoparticles supported by DFT calculations

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• 作者：Claudia Lentz ; ^{claudia.lentz@fu-berlin.de} ; Sara Panahian Jand ; Julia Melke ; Christina Roth ; Payam Kaghazchi ; ^{payam.kaghazchi@fu-berlin.de}
• 关键词：CO adsorption ; DRIFTS ; Infrared spectroscopy ; DFT ; Platinum nanoparticles ; Size distribution ; Size effect ; EuroPt-1 ; Adsorption sites
• 刊名：Journal of Molecular Catalysis A: Chemical
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：426
• 期：part_PA
• 页码：1-9
• 全文大小：2226 K
• 卷排序：426

文摘

DRIFTS measurements show three bands for CO adsorbed on Pt nanoparticles depending on the applied flow and pretreatment conditions. DFT calculations indicate that the IR bands are due to a combined size and site effect. For fully covered small nanoparticles the IR bands are attributed to all binding sites. For fully covered larger nanoparticles the dominant contribution is related to {111} facets but the other bands are still site independent.