Dispersion of ceria nanoparticles on γ-alumina surface functionalized using long chain carboxylic acids

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• 作者：Karolina Anna Ledwa ; ^{K.Ledwa@int.pan.wroc.pl} ; Leszek Kępiński
• 关键词：TGA ; thermogravimetric analysis ; FTIR ; fourier transform infra-red spectroscopy ; TEM ; transmission electron microscopy ; SEM ; scanning electron microscopy ; BET ; Brunauer ; Emmett and Teller method for specific surface area analysis ; XRD ; X-ray powder diffraction ; TPR ; temperature programmed reduction
• 刊名：Applied Surface Science
• 出版年：2017
• 出版时间：1 April 2017
• 年：2017
• 卷：400
• 期：Complete
• 页码：212-219
• 全文大小：2416 K
• 卷排序：400

文摘

New method for hydrophobic CeO2 nanoparticles dispersion and stability on γ-Al2O3 surface improvement is proposed. At monolayer coverage (1.1-2.5 molecules per nm2), the carboxylic acids molecules are firmly bounded to the alumina surface. For ceria nanoparticles (3-4 nm), deposited on functionalized alumina, increase of reducibility and thermal stability is observed.